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BOYESEN

BOYESEN

BOYESEN

Boyesen Reed Valves, Water Pumps, and Performance Parts at JJ Motorsports

Boyesen Racing Products is at the forefront of performance engineering in the powersports industry, founded on a passion for speed, precision, and quality. With a focus on innovation, Boyesen crafts high-performance components for motorcycles and ATVs, resulting from extensive research, development, and testing to ensure durability, functionality, and enhanced performance. The brand is trusted by enthusiasts for delivering reliable solutions that optimize power and reliability in off-road and racing applications.

At JJ Motorsports, we offer a wide selection of Boyesen products to elevate your ride. Popular items include the Water Pump Kit - Black - Gas Gas/Husqvarna/KTM WPK-42B, made in the USA for enhanced cooling performance, the Water Pump Kit - Magnesium - Gas Gas/Husqvarna/KTM WPK-42M to improve engine cooling, and the Impeller Pump for CR250 WPI-02 which enhances water flow and reduces hydraulic friction. Other favorites are the Single-Stage Reed - Fiber - CR250 '03 SSF302 for longer lifespan than stock reeds, the Single-Stage Reed - Fiber - YZ250 '02 SSF232 offering better value with fiberglass construction, and the Single-Stage Reed - Carbon - CR250 '03 SSC302 to optimize engine performance.

Boyesen products provide significant benefits such as increased horsepower through enhanced airflow, consistent temperature control for reliable performance, reduced friction, and longer component lifespan. Key features include durable materials like fiberglass and carbon, precise fitment for various models including Honda CR250, Yamaha YZ250, and KTM/Gas Gas/Husqvarna, and designs made in the USA for off-road racing and aggressive riding.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • BOYESEN Impeller/Waterpump Cover - Black WPK-12B

    BOYESEN Impeller/Waterpump Cover - Black WPK-12B

    BOYESEN

    $194.95
    Engine cooling efficiency directly impacts performance, reliability, and longevity—especially under sustained high-RPM conditions. The BOYESEN Impeller/Waterpump Cover upgrades your cooling system...
    09400408
    SKU:
    09400408
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    BASE COLOR:
    BLACK
    RIDING STYLE:
    OFF-ROAD
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    MODEL:
    SUPERCOOLER
    PRODUCT NAME:
    COVER AND IMPELLER KIT
    BASE FINISH:
    POWDER-COATED
    COLOR/FINISH:
    BLACK
    TYPE:
    WATER PUMP
    UNITS:
    KIT
    $194.95
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • BOYESEN Impeller/Waterpump Cover - Black WPK-07B

    BOYESEN Impeller/Waterpump Cover - Black WPK-07B

    BOYESEN

    $194.95
    Engine coolant flow directly impacts operating temperature stability and component longevity—especially under sustained high-RPM operation. The Boyesen WPK-07B uses a patented nautilus-style impeller...
    09400406
    SKU:
    09400406
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    BASE COLOR:
    BLACK
    COLOR/FINISH:
    POWDER-COATED
    PRODUCT NAME:
    COVER AND IMPELLER KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    MODEL:
    SUPERCOOLER
    TYPE:
    WATER PUMP
    BASE FINISH:
    POWDER-COATED
    COLOR/FINISH:
    BLACK
    MATERIAL:
    ALUMINUM
    $194.95
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • BOYESEN Impeller/Waterpump Cover WPK37M

    BOYESEN Impeller/Waterpump Cover WPK37M

    BOYESEN

    $194.95
    Engine cooling efficiency directly impacts performance, reliability, and longevity—especially under sustained high-RPM operation. The BOYESEN Impeller/Waterpump Cover WPK37M uses a patented...
    09400404
    SKU:
    09400404
    Availability:
    Ships Same Business Day
    Weight:
    0.37 LBS
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    SUPERCOOLER
    PRODUCT NAME:
    COVER AND IMPELLER KIT
    RIDING STYLE:
    OFF-ROAD
    BASE FINISH:
    POWDER-COATED
    UNITS:
    KIT
    TYPE:
    WATER PUMP
    COLOR/FINISH:
    MAGNESIUM
    MATERIAL:
    ALUMINUM
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • BOYESEN Impeller/Waterpump Cover WPK37B

    BOYESEN Impeller/Waterpump Cover WPK37B

    BOYESEN

    $194.95
    Engine temperature stability is critical to reliability and longevity, especially under sustained load or racing conditions. The Boyesen WPK37B water pump cover and impeller upgrade increases coolant...
    09400403
    SKU:
    09400403
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    WATER PUMP
    UNITS:
    KIT
    BASE COLOR:
    BLACK
    BASE FINISH:
    POWDER-COATED
    COLOR/FINISH:
    BLACK
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    MODEL:
    SUPERCOOLER
    PRODUCT NAME:
    COVER AND IMPELLER KIT
    $194.95
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • BOYESEN Impeller/Waterpump Cover WPK32AM

    BOYESEN Impeller/Waterpump Cover WPK32AM

    BOYESEN

    $194.95
    Engine cooling efficiency directly impacts both performance and longevity, especially under sustained load or competition conditions. The BOYESEN WPK32AM water pump cover and impeller upgrade...
    09400402
    SKU:
    09400402
    Availability:
    Ships Same Business Day
    Weight:
    0.31 LBS
    MODEL:
    SUPERCOOLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    WATER PUMP
    UNITS:
    KIT
    BASE FINISH:
    POWDER-COATED
    COLOR/FINISH:
    MAGNESIUM
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    COVER AND IMPELLER KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • BOYESEN Impeller/Waterpump Cover WPK32AB

    BOYESEN Impeller/Waterpump Cover WPK32AB

    BOYESEN

    $194.95
    Engine thermal management directly impacts reliability, performance consistency, and longevity—especially under sustained racing conditions or high-load operation. The BOYESEN Impeller/Waterpump...
    09400401
    SKU:
    09400401
    Availability:
    Ships Same Business Day
    Weight:
    0.31 LBS
    BASE FINISH:
    POWDER-COATED
    COLOR/FINISH:
    BLACK
    TYPE:
    WATER PUMP
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    MATERIAL:
    ALUMINUM
    MODEL:
    SUPERCOOLER
    BASE COLOR:
    BLACK
    COLOR/FINISH:
    POWDER-COATED
    PRODUCT NAME:
    COVER AND IMPELLER KIT
    $194.95
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • BOYESEN Impeller/Waterpump Cover WPK-31B

    BOYESEN Impeller/Waterpump Cover WPK-31B

    BOYESEN

    $194.95
    Engine coolant flow directly impacts operating temperature stability and longevity—particularly under sustained high-RPM conditions where thermal management becomes critical. The BOYESEN WPK-31B...
    09400399
    SKU:
    09400399
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    BASE COLOR:
    BLACK
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    MODEL:
    SUPERCOOLER
    PRODUCT NAME:
    COVER AND IMPELLER KIT
    BASE FINISH:
    POWDER-COATED
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    WATER PUMP
    UNITS:
    KIT
    $194.95
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • BOYESEN Impeller/Waterpump Cover WPK-06M

    BOYESEN Impeller/Waterpump Cover WPK-06M

    BOYESEN

    $194.95
    Engine cooling efficiency directly impacts performance and longevity—inadequate coolant flow forces your engine to operate at inconsistent temperatures, compromising both power output and component...
    09400398
    SKU:
    09400398
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    BASE FINISH:
    POWDER-COATED
    COLOR/FINISH:
    MAGNESIUM
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    COVER AND IMPELLER KIT
    MODEL:
    SUPERCOOLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    WATER PUMP
    UNITS:
    KIT
    $194.95
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • BOYESEN Impeller/Waterpump Cover WPK-06B

    BOYESEN Impeller/Waterpump Cover WPK-06B

    BOYESEN

    $194.95
    Engine cooling efficiency directly impacts performance and longevity—especially under sustained high-RPM operation. The BOYESEN WPK-06B addresses this with a hydrodynamic impeller design that...
    09400397
    SKU:
    09400397
    Availability:
    Ships Same Business Day
    Weight:
    0.32 LBS
    BASE COLOR:
    BLACK
    BASE FINISH:
    POWDER-COATED
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    COVER AND IMPELLER KIT
    COLOR/FINISH:
    BLACK
    MODEL:
    SUPERCOOLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    WATER PUMP
    UNITS:
    KIT
    $194.95
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • BOYESEN Clutch Cover - Gold - YZ125 CC-33M

    BOYESEN Clutch Cover - Gold - YZ125 CC-33M

    BOYESEN

    $95.95
    A lightweight clutch cover is essential for reducing unsprung weight and improving overall bike handling, especially in competitive YZ125 applications where every fraction of a pound matters. The...
    09400396
    SKU:
    09400396
    Availability:
    Ships Same Business Day
    Weight:
    0.68 LBS
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    COLOR/FINISH:
    MAGNESIUM
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • BOYESEN Clutch Cover - Black - YZ125 CC-33B

    BOYESEN Clutch Cover - Black - YZ125 CC-33B

    BOYESEN

    $95.95
    A clutch cover isn't just protection—it's a statement of maintenance standards and ride reliability. The BOYESEN CC-33B delivers factory-grade durability with a lightweight design that won't add...
    09400395
    SKU:
    09400395
    Availability:
    Ships Same Business Day
    Weight:
    1.19 LBS
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    COLOR/FINISH:
    BLACK
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    $95.95
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • BOYESEN Clutch Cover - Gold - YZ125 CC-31M

    BOYESEN Clutch Cover - Gold - YZ125 CC-31M

    BOYESEN

    $198.95
    A lightweight clutch cover isn't just about aesthetics—it reduces unsprung weight and heat retention while maintaining the durability your YZ125 demands in competition. The Boyesen CC-31M delivers...
    09400393
    SKU:
    09400393
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    COLOR/FINISH:
    MAGNESIUM
    TYPE:
    CLUTCH
    PRODUCT NAME:
    COVER
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    $198.95
    Qty in Cart: 0
    Quantity:
    Price:
    $198.95
    Subtotal:
  • BOYESEN Clutch Cover - Black - YZ125 CC-31B

    BOYESEN Clutch Cover - Black - YZ125 CC-31B

    BOYESEN

    $198.95
    A clutch cover does more than protect—it's a visible statement of your commitment to race-ready precision. The Boyesen CC-31B combines lightweight construction with a factory-engineered fit that...
    09400392
    SKU:
    09400392
    Availability:
    Ships Same Business Day
    Weight:
    0.86 LBS
    COLOR/FINISH:
    BLACK
    PRODUCT NAME:
    COVER
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    MODEL:
    FACTORY RACING
    TYPE:
    CLUTCH
    COLOR/FINISH:
    POWDER-COATED
    Qty in Cart: 0
    Quantity:
    Price:
    $198.95
    Subtotal:
  • BOYESEN Clutch Cover - Gold - KX250 CC-12CM

    BOYESEN Clutch Cover - Gold - KX250 CC-12CM

    BOYESEN

    $95.95
    A lightweight clutch cover reduces unsprung weight and rotational mass—critical factors in KX250 performance where every fraction matters. The BOYESEN Gold cover combines factory-grade durability...
    09400390
    SKU:
    09400390
    Availability:
    Ships Same Business Day
    Weight:
    1.03 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    COLOR/FINISH:
    MAGNESIUM
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    $95.95
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • BOYESEN Clutch Cover - Gold - YZ/WR250F CC-37M

    BOYESEN Clutch Cover - Gold - YZ/WR250F CC-37M

    BOYESEN

    $95.95
    A lightweight clutch cover reduces unsprung weight and rotational mass, directly improving throttle response and handling characteristics on your YZ/WR250F. The factory-spec design delivers OEM...
    09400235
    SKU:
    09400235
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    UNITS:
    EACH
    PRODUCT NAME:
    COVER
    COLOR/FINISH:
    MAGNESIUM
    $95.95
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • BOYESEN Clutch Cover - Black - YZ/WR250F CC-37B

    BOYESEN Clutch Cover - Black - YZ/WR250F CC-37B

    BOYESEN

    $95.95
    A lightweight clutch cover cuts unsprung weight and improves handling dynamics without compromising protection—critical for riders pushing lap times. Individually surfaced construction eliminates...
    09400234
    SKU:
    09400234
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    COLOR/FINISH:
    POWDER-COATED
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    MODEL:
    FACTORY RACING
    TYPE:
    CLUTCH
    COLOR/FINISH:
    BLACK
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • BOYESEN Clutch Cover - Gold - RM250 CC-22M

    BOYESEN Clutch Cover - Gold - RM250 CC-22M

    BOYESEN

    $95.95
    A quality clutch cover protects one of your engine's most critical components while establishing the visual foundation of your build. The BOYESEN Clutch Cover delivers lightweight construction...
    09400232
    SKU:
    09400232
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    COLOR/FINISH:
    MAGNESIUM
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    PRODUCT NAME:
    COVER
    TYPE:
    CLUTCH
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    $95.95
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • BOYESEN Clutch Cover - Gold - RM125 CC-21AM

    BOYESEN Clutch Cover - Gold - RM125 CC-21AM

    BOYESEN

    $95.95
    A quality clutch cover is essential for protecting your engine's internal components while maintaining a clean, professional appearance in the paddock. The BOYESEN Clutch Cover delivers lightweight...
    09400231
    SKU:
    09400231
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    PRODUCT NAME:
    COVER
    COLOR/FINISH:
    MAGNESIUM
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    TYPE:
    CLUTCH
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    $95.95
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • BOYESEN Clutch Cover - Gold - KX250 CC-12M

    BOYESEN Clutch Cover - Gold - KX250 CC-12M

    BOYESEN

    $95.95
    A factory clutch cover is critical protection for your KX250's clutch basket and internal components—one crash or debris strike can mean a complete engine teardown. The BOYESEN Gold Clutch Cover...
    09400229
    SKU:
    09400229
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    COLOR/FINISH:
    MAGNESIUM
    $95.95
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • BOYESEN Clutch Cover - Gold - KX125 CC-11AM

    BOYESEN Clutch Cover - Gold - KX125 CC-11AM

    BOYESEN

    $95.95
    A clutch cover does more than protect—it's a visible statement of your commitment to precision engineering and race-ready performance. The BOYESEN Gold Clutch Cover combines lightweight construction...
    09400228
    SKU:
    09400228
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    COLOR/FINISH:
    MAGNESIUM
    COLOR/FINISH:
    POWDER-COATED
    PRODUCT NAME:
    COVER
    MODEL:
    FACTORY RACING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    UNITS:
    EACH
    $95.95
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • BOYESEN Clutch Cover - Gold - CR450F CC-06M

    BOYESEN Clutch Cover - Gold - CR450F CC-06M

    BOYESEN

    $95.95
    A clutch cover does more than protect—it's a visual statement of your commitment to quality and performance. The BOYESEN Gold Clutch Cover combines race-proven durability with a lightweight design...
    09400226
    SKU:
    09400226
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    COLOR/FINISH:
    MAGNESIUM
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    PRODUCT NAME:
    COVER
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    $95.95
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • BOYESEN Clutch Cover - Black - CR450F CC-06B

    BOYESEN Clutch Cover - Black - CR450F CC-06B

    BOYESEN

    $95.95
    A clutch cover isn't just cosmetic—it's your first line of defense against debris, heat, and premature wear. The BOYESEN CC-06B delivers the lightweight construction you need for race applications...
    09400225
    SKU:
    09400225
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    COLOR/FINISH:
    BLACK
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • BOYESEN Clutch Cover - Gold - CR250 CC-02AM

    BOYESEN Clutch Cover - Gold - CR250 CC-02AM

    BOYESEN

    $95.95
    If you're running a CR250 at the track or trail, your clutch cover takes a beating. The BOYESEN Lightweight Clutch Cover combines factory-level protection with measurable weight savings, helping you...
    09400223
    SKU:
    09400223
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    COLOR/FINISH:
    MAGNESIUM
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    TYPE:
    CLUTCH
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    COVER
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • BOYESEN Ignition Cover - Gold - YZ250 SC-32AM

    BOYESEN Ignition Cover - Gold - YZ250 SC-32AM

    BOYESEN

    $87.95
    The stock ignition cover on your YZ250 isn't just cosmetic—it's your engine's first line of defense against dirt, water, and debris that can compromise internal components. A quality replacement...
    09400220
    SKU:
    09400220
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    MODEL:
    FACTORY RACING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    IGNITION
    COLOR/FINISH:
    MAGNESIUM
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    $87.95
    Qty in Cart: 0
    Quantity:
    Price:
    $87.95
    Subtotal:
  • BOYESEN Ignition Cover - Gold - RM250 SC-23M

    BOYESEN Ignition Cover - Gold - RM250 SC-23M

    BOYESEN

    $87.95
    A quality ignition cover is essential protection against the elements—dirt, water, and debris can compromise engine reliability if left exposed. The BOYESEN Factory Ignition Cover delivers OEM-level...
    09400218
    SKU:
    09400218
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    IGNITION
    UNITS:
    EACH
    COLOR/FINISH:
    MAGNESIUM
    PRODUCT NAME:
    COVER
    MATERIAL:
    ALUMINUM
    Qty in Cart: 0
    Quantity:
    Price:
    $87.95
    Subtotal:
  • BOYESEN Ignition Cover - Gold - RM125 SC-21CM

    BOYESEN Ignition Cover - Gold - RM125 SC-21CM

    BOYESEN

    $87.95
    The stock ignition cover on your RM125 takes a beating—dirt, water, and constant vibration compromise engine integrity and longevity. A quality replacement like the Boyesen Factory Cover seals...
    09400217
    SKU:
    09400217
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    MODEL:
    FACTORY RACING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    IGNITION
    COLOR/FINISH:
    MAGNESIUM
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    $87.95
    Qty in Cart: 0
    Quantity:
    Price:
    $87.95
    Subtotal:
  • BOYESEN Ignition Cover - Gold - KX250 SC-12M

    BOYESEN Ignition Cover - Gold - KX250 SC-12M

    BOYESEN

    $87.95
    Keep your KX250's ignition system protected from the elements with a cover that matches factory standards while outlasting the stock alternative. Boyesen's cast aluminum construction provides the...
    09400215
    SKU:
    09400215
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    IGNITION
    COLOR/FINISH:
    MAGNESIUM
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    MODEL:
    FACTORY RACING
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    $87.95
    Qty in Cart: 0
    Quantity:
    Price:
    $87.95
    Subtotal:
  • BOYESEN Ignition Cover - Gold - KX125 SC-11AM

    BOYESEN Ignition Cover - Gold - KX125 SC-11AM

    BOYESEN

    $87.95
    A quality ignition cover isn't just cosmetic—it's essential protection for your engine's most vulnerable components. The BOYESEN Factory Ignition Cover seals out dirt and water that can compromise...
    09400214
    SKU:
    09400214
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    PRODUCT NAME:
    COVER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    IGNITION
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    MODEL:
    FACTORY RACING
    UNITS:
    EACH
    COLOR/FINISH:
    MAGNESIUM
    $87.95
    Qty in Cart: 0
    Quantity:
    Price:
    $87.95
    Subtotal:
  • BOYESEN Ignition Cover - Gold - CR500 SC-03M

    BOYESEN Ignition Cover - Gold - CR500 SC-03M

    BOYESEN

    $87.95
    A quality ignition cover is a small detail that separates a well-maintained engine from one heading toward premature wear. The Boyesen Factory Ignition Cover protects your CR500's internal components...
    09400212
    SKU:
    09400212
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    IGNITION
    COLOR/FINISH:
    MAGNESIUM
    MATERIAL:
    ALUMINUM
    $87.95
    Qty in Cart: 0
    Quantity:
    Price:
    $87.95
    Subtotal:
  • BOYESEN Ignition Cover - Gold - CR250 SC02AM

    BOYESEN Ignition Cover - Gold - CR250 SC02AM

    BOYESEN

    $87.95
    A properly sealed ignition cover is critical for engine longevity—it keeps dirt, moisture, and contaminants away from ignition components that can't tolerate exposure. The Boyesen Factory Cover...
    09400211
    SKU:
    09400211
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    PRODUCT NAME:
    COVER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    IGNITION
    UNITS:
    EACH
    COLOR/FINISH:
    MAGNESIUM
    MATERIAL:
    ALUMINUM
    $87.95
    Qty in Cart: 0
    Quantity:
    Price:
    $87.95
    Subtotal:
  • BOYESEN Replacement Gasket - KTM CCG-41

    BOYESEN Replacement Gasket - KTM CCG-41

    BOYESEN

    $7.00
    Factory clutch covers are prone to warping under sustained racing conditions, compromising your seal integrity and risking fluid leakage at critical moments. The BOYESEN CCG-41 replaces OEM gaskets...
    09343124
    SKU:
    09343124
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MATERIAL:
    NITRILE RUBBER
    UNITS:
    EACH
    PRODUCT NAME:
    GASKET
    MODEL:
    FACTORY RACING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH COVER
    $7.00
    Qty in Cart: 0
    Quantity:
    Price:
    $7.00
    Subtotal:
  • BOYESEN Replacement Gasket CCG-42

    BOYESEN Replacement Gasket CCG-42

    BOYESEN

    $7.00
    A clutch cover gasket is critical to preventing oil seepage and maintaining consistent engine temperatures during high-demand racing conditions. The BOYESEN CCG-42 eliminates the leak-prone factory...
    09341291
    SKU:
    09341291
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MODEL:
    FACTORY RACING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH COVER
    MATERIAL:
    NITRILE RUBBER
    PRODUCT NAME:
    GASKET
    UNITS:
    EACH
    $7.00
    Qty in Cart: 0
    Quantity:
    Price:
    $7.00
    Subtotal:
  • BOYESEN Replacement Gasket SCG-42

    BOYESEN Replacement Gasket SCG-42

    BOYESEN

    $5.95
    Engine covers take a beating from dirt, moisture, and temperature swings—stock gaskets degrade quickly and compromise your seal integrity. The BOYESEN SCG-42 replacement gasket delivers a reliable,...
    09341290
    SKU:
    09341290
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    IGNITION COVER GASKET
    MATERIAL:
    NITRILE RUBBER
    MODEL:
    FACTORY RACING
    PRODUCT NAME:
    GASKET
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $5.95
    Subtotal:
  • BOYESEN Ignition Cover Gasket SCG-41

    BOYESEN Ignition Cover Gasket SCG-41

    BOYESEN

    $5.95
    A degraded ignition cover gasket compromises engine sealing, allowing moisture and contaminants to infiltrate critical internal components. The Boyesen SCG-41 delivers a factory-quality seal with...
    09341285
    SKU:
    09341285
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MODEL:
    FACTORY RACING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    IGNITION COVER GASKET
    MATERIAL:
    NITRILE RUBBER
    PRODUCT NAME:
    GASKET
    UNITS:
    EACH
    $5.95
    Qty in Cart: 0
    Quantity:
    Price:
    $5.95
    Subtotal:
  • BOYESEN Replacement Gasket - KTM CCG-46

    BOYESEN Replacement Gasket - KTM CCG-46

    BOYESEN

    $7.00
    A worn or damaged clutch cover gasket compromises your engine's seal integrity, leading to oil leaks and potential performance loss during high-RPM running. The BOYESEN CCG-46 replacement gasket...
    09341283
    SKU:
    09341283
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MATERIAL:
    NITRILE RUBBER
    MODEL:
    FACTORY RACING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH COVER
    UNITS:
    EACH
    PRODUCT NAME:
    GASKET
    $7.00
    Qty in Cart: 0
    Quantity:
    Price:
    $7.00
    Subtotal:
  • BOYESEN Replacement Gasket CCG-27

    BOYESEN Replacement Gasket CCG-27

    BOYESEN

    $7.00
    Factory clutch cover gaskets wear out and degrade under heat and pressure, leading to oil seepage and potential engine damage. The BOYESEN CCG-27 replacement gasket eliminates leaks with a...
    09341272
    SKU:
    09341272
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    PRODUCT NAME:
    GASKET
    MATERIAL:
    NITRILE RUBBER
    MODEL:
    FACTORY RACING
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH COVER
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $7.00
    Subtotal:
  • BOYESEN Clutch Cover Gasket CCG-06X

    BOYESEN Clutch Cover Gasket CCG-06X

    BOYESEN

    $7.00
    A compromised clutch cover gasket means oil seepage, potential drivetrain contamination, and unreliable performance when you need it most. The BOYESEN CCG-06X eliminates these risks with a...
    09340959
    SKU:
    09340959
    Availability:
    Ships Same Business Day
    Weight:
    0.03 LBS
    RIDING STYLE:
    STREET
    TYPE:
    CLUTCH COVER
    MATERIAL:
    NITRILE RUBBER
    MODEL:
    FACTORY RACING
    PRODUCT NAME:
    GASKET
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $7.00
    Subtotal:
  • BOYESEN Impeller/Waterpump Cover WPK-80B

    BOYESEN Impeller/Waterpump Cover WPK-80B

    BOYESEN

    $194.95
    Engine temperatures spike under sustained load, compromising reliability and performance potential. The BOYESEN WPK-80B water pump cover and impeller assembly increases coolant flow across all RPM...
    09320166
    SKU:
    09320166
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    MATERIAL:
    ALUMINUM
    BASE FINISH:
    POWDER-COATED
    COLOR/FINISH:
    BLACK
    PRODUCT NAME:
    COVER AND IMPELLER KIT
    UNITS:
    KIT
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    SUPERCOOLER
    RIDING STYLE:
    ATV
    TYPE:
    WATER PUMP
    BASE COLOR:
    BLACK
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • BOYESEN Impeller/Waterpump Cover - Magnesium WPK-18AM

    BOYESEN Impeller/Waterpump Cover - Magnesium WPK-18AM

    BOYESEN

    $194.95
    Engine temperature stability is critical to reliability and longevity, especially under sustained load or racing conditions. The Boyesen WPK-18AM upgrades your cooling system with a high-flow...
    09320163
    SKU:
    09320163
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    MATERIAL:
    ALUMINUM
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    SUPERCOOLER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    WATER PUMP
    BASE FINISH:
    POWDER-COATED
    COLOR/FINISH:
    MAGNESIUM
    PRODUCT NAME:
    COVER AND IMPELLER KIT
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • BOYESEN Impeller/Waterpump Cover - Black WPK-18AB

    BOYESEN Impeller/Waterpump Cover - Black WPK-18AB

    BOYESEN

    $194.95
    Engine coolant flow directly impacts operating temperature stability and component longevity. The BOYESEN WPK-18AB water pump cover and impeller assembly uses a patented nautilus-style impeller...
    09320162
    SKU:
    09320162
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    BASE FINISH:
    POWDER-COATED
    COLOR/FINISH:
    BLACK
    UNITS:
    KIT
    RIDING STYLE:
    OFF-ROAD
    BASE COLOR:
    BLACK
    PRODUCT NAME:
    COVER AND IMPELLER KIT
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    MODEL:
    SUPERCOOLER
    TYPE:
    WATER PUMP
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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