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Dirt Bike Engine

Dirt Bike Engine

Dirt Bike Engine

Discover a full range of dirt bike engine components for rebuilding or upgrading your performance. From crankshafts to cylinder heads and piston kits, these precision-engineered components ensure reliable performance. For additional upgrades, check out our full selection of off-road dirt bike parts.

  • Product
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  • Quantity
  • Price
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  • WSM Piston Kit - K1100 - +.5 mm 010-821-05PK

    WSM Piston Kit - K1100 - +.5 mm 010-821-05PK

    WSM

    $93.60
    WSM Piston Kit K1100 +.5 mm 010-821-05PKQuality and construction that meets or exceeds OEM, Feature improved E-clip design, Contain piston, rings, pin and clips, Additional rings available separately, Order one per cylinder, Skirts have a nonabrasive,...
    01082105P
    SKU:
    01082105P
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    BORE - OVERSIZE:
    +0,50 MM
    PISTON MATERIAL:
    ALUMINUM
    BORE - OVERSIZE METRIC:
    +0.50 MM
    BORE SIZE METRIC:
    80.00 MM
    MODEL:
    PLATINUM
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    KIT
    $93.60
    Qty in Cart: 0
    Quantity:
    Price:
    $93.60
    Subtotal:
  • VESRAH Complete Gasket Kit - KE/KV 100 VG-444

    VESRAH Complete Gasket Kit - KE/KV 100 VG-444

    VESRAH

    $34.64
    Complete Gasket Sets VG444 Comprehensive engine rebuild solution with all necessary gaskets. Includes essential o-rings for optimal sealing performance. Features valve guide oil seals to ensure engine longevity. Top-end gasket sets...
    VG444
    SKU:
    VG444
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    COMPLETE
    UNITS:
    SET
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    $34.64
    Qty in Cart: 0
    Quantity:
    Price:
    $34.64
    Subtotal:
  • VESRAH Complete Gasket Kit - DT100 VG-292

    VESRAH Complete Gasket Kit - DT100 VG-292

    VESRAH

    $29.00
    Complete Gasket Sets VG292 Includes all necessary engine gaskets for a comprehensive rebuild. Features high-quality o-rings for optimal sealing performance. Comes with valve guide oil seals to ensure proper oil management. Top-end gasket...
    VG292
    SKU:
    VG292
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    PRODUCT NAME:
    GASKET
    UNITS:
    SET
    TYPE:
    COMPLETE
    $29.00
    Qty in Cart: 0
    Quantity:
    Price:
    $29.00
    Subtotal:
  • BOYESEN Ignition Cover - Black - KTM SX SC-41AB

    BOYESEN Ignition Cover - Black - KTM SX SC-41AB

    BOYESEN

    $87.95
    BOYESEN Ignition Cover Black KTM SX SC-41ABLook like a professional with the Factory Ignition Cover, Seals properly, guarding inside of engine from dirt and water and outlasts stock covers, Boyesen Factory Covers are cast from the highest grade of...
    09401266
    SKU:
    09401266
    Availability:
    Ships Same Business Day
    Weight:
    0.78 LBS
    RIDING STYLE:
    STREET
    COLOR/FINISH:
    BLACK
    PRODUCT NAME:
    COVER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    IGNITION
    MATERIAL:
    ALUMINUM
    MODEL:
    FACTORY RACING
    COLOR/FINISH:
    POWDER-COATED
    UNITS:
    EACH
    $87.95
    Qty in Cart: 0
    Quantity:
    Price:
    $87.95
    Subtotal:
  • BOYESEN Ignition Cover - Gold - CR125 SC-01AM

    BOYESEN Ignition Cover - Gold - CR125 SC-01AM

    BOYESEN

    $87.95
    BOYESEN Ignition Cover Gold CR125 SC-01AMLook like a professional with the Factory Ignition Cover, Seals properly, guarding inside of engine from dirt and water and outlasts stock covers, Boyesen Factory Covers are cast from the highest grade of aluminum...
    09400209
    SKU:
    09400209
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    COLOR/FINISH:
    POWDER-COATED
    MODEL:
    FACTORY RACING
    PRODUCT NAME:
    COVER
    TYPE:
    IGNITION
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    COLOR/FINISH:
    MAGNESIUM
    MATERIAL:
    ALUMINUM
    $87.95
    Qty in Cart: 0
    Quantity:
    Price:
    $87.95
    Subtotal:
  • BOYESEN Replacement Gasket - KTM CCG-44A

    BOYESEN Replacement Gasket - KTM CCG-44A

    BOYESEN

    $7.00
    BOYESEN Replacement Gasket KTM CCG-44ASet your ride apart from the rest with the ultimate look in race performance, Lightweight factory clutch covers provide years of outstanding protection; guaranteed not to warp, Individually surfaced for a perfect,...
    09343125
    SKU:
    09343125
    Availability:
    Ships Same Business Day
    Weight:
    0.01 LBS
    MATERIAL:
    NITRILE RUBBER
    MODEL:
    FACTORY RACING
    UNITS:
    EACH
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH COVER
    $7.00
    Qty in Cart: 0
    Quantity:
    Price:
    $7.00
    Subtotal:
  • HOT RODS Crankshaft Assembly 4014

    HOT RODS Crankshaft Assembly 4014

    HOT RODS

    $282.95
    HOT RODS Crankshaft Assembly 4014Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...
    H117
    SKU:
    H117
    Availability:
    Ships Same Business Day
    Weight:
    4.10 LBS
    MATERIAL:
    4140 STEEL
    UNITS:
    ASSEMBLY
    COLOR/FINISH:
    STEEL
    DISPLACEMENT:
    65 CC
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    41.60 MM
    FEATURES:
    STANDARD CRANKSHAFT
    MODEL:
    2-CYCLE
    TYPE:
    OEM STROKE
    $282.95
    Qty in Cart: 0
    Quantity:
    Price:
    $282.95
    Subtotal:
  • HOT RODS Water Pump Repair Kit - Honda WPK0006

    HOT RODS Water Pump Repair Kit - Honda WPK0006

    HOT RODS

    $31.95
    HOT RODS Water Pump Repair Kit Honda WPK0006Kits include water pump cover gasket, water pump shaft bearing(s) and seal(s) to repair a leaking pump or failed bearing, Precision micro bearings provide OEM quality and durability, High-pressure/temperature...
    09342918
    SKU:
    09342918
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    PRODUCT NAME:
    GASKET KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    WATER PUMP REPAIR
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $31.95
    Subtotal:
  • HOT RODS Water Pump Repair Kit - Honda WPK0007

    HOT RODS Water Pump Repair Kit - Honda WPK0007

    HOT RODS

    $58.95
    HOT RODS Water Pump Repair Kit Honda WPK0007Kits include water pump cover gasket, water pump shaft bearing(s) and seal(s) to repair a leaking pump or failed bearing, Precision micro bearings provide OEM quality and durability, High-pressure/temperature...
    09342919
    SKU:
    09342919
    Availability:
    Ships Same Business Day
    Weight:
    0.12 LBS
    PRODUCT NAME:
    GASKET KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    WATER PUMP REPAIR
    UNITS:
    KIT
    $58.95
    Qty in Cart: 0
    Quantity:
    Price:
    $58.95
    Subtotal:
  • HOT RODS Water Pump Repair Kit - Honda WPK0008

    HOT RODS Water Pump Repair Kit - Honda WPK0008

    HOT RODS

    $50.95
    HOT RODS Water Pump Repair Kit Honda WPK0008Kits include water pump cover gasket, water pump shaft bearing(s) and seal(s) to repair a leaking pump or failed bearing, Precision micro bearings provide OEM quality and durability, High-pressure/temperature...
    09342920
    SKU:
    09342920
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    TYPE:
    WATER PUMP REPAIR
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET KIT
    RIDING STYLE:
    OFF-ROAD
    $50.95
    Qty in Cart: 0
    Quantity:
    Price:
    $50.95
    Subtotal:
  • HOT RODS Crankshaft Assembly 4032

    HOT RODS Crankshaft Assembly 4032

    HOT RODS

    $441.95
    HOT RODS Crankshaft Assembly 4032Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...
    H121
    SKU:
    H121
    Availability:
    Ships Same Business Day
    Weight:
    6.56 LBS
    COLOR/FINISH:
    STEEL
    FEATURES:
    STANDARD CRANKSHAFT
    STROKE LENGTH METRIC:
    54.60 MM
    TYPE:
    OEM STROKE
    MATERIAL:
    4140 STEEL
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    ASSEMBLY
    MODEL:
    2-CYCLE
    DISPLACEMENT:
    125 CC
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    $441.95
    Qty in Cart: 0
    Quantity:
    Price:
    $441.95
    Subtotal:
  • HOT RODS Crank Bearings K085

    HOT RODS Crank Bearings K085

    HOT RODS

    $196.95
    HOT RODS Crank Bearings K085Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies
    09240373
    SKU:
    09240373
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    APPLICATION:
    MAIN CRANKSHAFT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    BEARING
    TYPE:
    BALL
    $196.95
    Qty in Cart: 0
    Quantity:
    Price:
    $196.95
    Subtotal:
  • HOT RODS Crankshaft 4093

    HOT RODS Crankshaft 4093

    HOT RODS

    $465.95
    HOT RODS Crankshaft 4093Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and ready for...
    09210213
    SKU:
    09210213
    Availability:
    Ships Same Business Day
    Weight:
    9.94 LBS
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    MODEL:
    4-CYCLE
    DISPLACEMENT:
    450 CC
    FEATURES:
    STANDARD CRANKSHAFT
    TYPE:
    OEM STROKE
    COLOR/FINISH:
    STEEL
    MATERIAL:
    4140 STEEL
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    62.10 MM
    UNITS:
    ASSEMBLY
    $465.95
    Qty in Cart: 0
    Quantity:
    Price:
    $465.95
    Subtotal:
  • HOT RODS Crankshaft 4095

    HOT RODS Crankshaft 4095

    HOT RODS

    $368.95
    HOT RODS Crankshaft 4095Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and ready for...
    09210215
    SKU:
    09210215
    Availability:
    Ships Same Business Day
    Weight:
    7.15 LBS
    COLOR/FINISH:
    STEEL
    MATERIAL:
    4140 STEEL
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    ASSEMBLY
    FEATURES:
    HEAVY DUTY CRANKSHAFT
    TYPE:
    OEM STROKE
    DISPLACEMENT:
    250 CC
    MODEL:
    4-CYCLE
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    STROKE LENGTH METRIC:
    52.20 MM
    $368.95
    Qty in Cart: 0
    Quantity:
    Price:
    $368.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0119

    HOT RODS Crankshaft Kit CBK0119

    HOT RODS

    $551.95
    HOT RODS Crankshaft Kit CBK0119Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely...
    09210356
    SKU:
    09210356
    Availability:
    Ships Same Business Day
    Weight:
    9.00 LBS
    PRODUCT NAME:
    CRANKSHAFT KIT
    TYPE:
    OEM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $551.95
    Qty in Cart: 0
    Quantity:
    Price:
    $551.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0120

    HOT RODS Crankshaft Kit CBK0120

    HOT RODS

    $919.95
    HOT RODS Crankshaft Kit CBK0120Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely...
    09210357
    SKU:
    09210357
    Availability:
    Ships Same Business Day
    Weight:
    13.65 LBS
    PRODUCT NAME:
    CRANKSHAFT KIT
    TYPE:
    OEM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $919.95
    Qty in Cart: 0
    Quantity:
    Price:
    $919.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0124

    HOT RODS Crankshaft Kit CBK0124

    HOT RODS

    $711.95
    HOT RODS Crankshaft Kit CBK0124Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely...
    09210358
    SKU:
    09210358
    Availability:
    Ships Same Business Day
    Weight:
    13.08 LBS
    TYPE:
    OEM
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    CRANKSHAFT KIT
    UNITS:
    KIT
    $711.95
    Qty in Cart: 0
    Quantity:
    Price:
    $711.95
    Subtotal:
  • HOT RODS Crankshaft 4068

    HOT RODS Crankshaft 4068

    HOT RODS

    $139.95
    HOT RODS Crankshaft 4068Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and ready for...
    09210076
    SKU:
    09210076
    Availability:
    Ships Same Business Day
    Weight:
    4.78 LBS
    COLOR/FINISH:
    STEEL
    DISPLACEMENT:
    85 CC
    MATERIAL:
    4140 STEEL
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    48.00 MM
    UNITS:
    ASSEMBLY
    MODEL:
    2-CYCLE
    FEATURES:
    STANDARD CRANKSHAFT
    TYPE:
    OEM STROKE
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    Qty in Cart: 0
    Quantity:
    Price:
    $139.95
    Subtotal:
  • HOT RODS Crankshaft - Stroker 4166

    HOT RODS Crankshaft - Stroker 4166

    HOT RODS

    $293.95
    HOT RODS Crankshaft Stroker 4166Hot Rods has developed six long-stroke applications for ATVs, Special pistons for TRX400EX, KFX/LTZ 400, Banshee, Warrior and Raptor make these installations simple by avoiding machine work and parts typically required for...
    09210077
    SKU:
    09210077
    Availability:
    Ships Same Business Day
    Weight:
    4.60 LBS
    COLOR/FINISH:
    STEEL
    DISPLACEMENT:
    88 CC TO 103.5 CC
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    ASSEMBLY
    MATERIAL:
    4140 STEEL
    MODEL:
    2-CYCLE
    PRODUCT NAME:
    CRANKSHAFT ASSEMBLY
    STROKE LENGTH:
    47,80 MM
    STROKE LENGTH METRIC:
    47.80 MM
    FEATURES:
    STANDARD CRANKSHAFT
    TYPE:
    STROKER
    $293.95
    Qty in Cart: 0
    Quantity:
    Price:
    $293.95
    Subtotal:
  • COMETIC Clutch Cover Gasket - Kawasaki EC513018AFM

    COMETIC Clutch Cover Gasket - Kawasaki EC513018AFM

    COMETIC

    $13.95
    COMETIC Clutch Cover Gasket Kawasaki EC513018AFMGaskets and gasket sets used by professionals in high-performance machines and as OE replacements worldwide, Each Kit contains the proper number of gaskets for one application, Made in the U.S.A.
    09345456
    SKU:
    09345456
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    GASKET
    UNITS:
    SET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH COVER
    $13.95
    Qty in Cart: 0
    Quantity:
    Price:
    $13.95
    Subtotal:
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Dirt Bike Engine Parts

Keep your dirt bike running smoothly and prolong the life of its engine with essential general maintenance. But when parts start to break down, don't let it stop you from getting out on the trails! JJ Motorsports has all that you need for minor jobs like oil changes or major overhauls such as a complete rebuild - carrying top aftermarket brands . Get back in gear faster by shopping our full line of high-quality dirt bike engine parts here today at JJ Motorsports!

 

At JJ Motorsports, we want to make sure you don't miss out on the ride! If your motor has blown or radiator smashed, our gearheads can help get you back in the seat. We carry piston kits from top brands like Wiseco and Wrench Rabbit engine kits so that riders have access to a wide range of parts for their dirt bike engine rebuilds. Plus – with gaskets at-the-ready when it comes time for any leakages - no need to worry about maintenance issues either; simply stay up on oil & filter changes and let us take care of everything else. Got queries? Just give one of our knowledgeable staff members a call at 1-231‐767‐5055 where they'll be more than happy provide advice, instructions and tailored answers catered just for YOU!