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Dirt Bike Piston and Ring Kits

Dirt Bike Piston and Ring Kits

Dirt Bike Piston and Ring Kits

Dirt Bike Piston & Ring Kits for Yamaha YZ85, WR250 & YZ250 at JJ Motorsports

Rebuild your dirt bike's top end for maximum power and reliability with premium piston and ring kits from JJ Motorsports, forged from high-strength aluminum for superior heat resistance, lightweight performance, and precise fit in motocross, enduro, and trail riding. Our selection includes complete kits with pistons, high-performance rings, wrist pins, circlips, top-end bearings, and gaskets designed for enhanced combustion efficiency, reduced blow-by, and longer engine life under high-RPM abuse. Compatible with popular models like Yamaha YZ85 (2002-2018), WR250, and YZ250, these Wiseco-engineered components feature CNC-machined crowns for optimal cam shape, ArmorGlide skirt coatings for low friction, and 4032 alloy construction for durability in dusty, aggressive conditions. Whether you're refreshing a youth 85cc 2-stroke or upgrading a 250cc big bore, these kits ensure crisp throttle response, better sealing, and race-ready power without the need for custom boring—perfect for DIY rebuilds or pro-level maintenance.

Shop trusted brands like Wiseco for race-proven quality. Explore related categories such as dirt bike engine for cylinders and valves or dirt bike air and fuel for carburetors and jets.

Top Dirt Bike Piston & Ring Kits

Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Wiseco Yamaha YZ125 2003-2004 Piston Kit with Gaskets PK1344

    Wiseco Yamaha YZ125 2003-2004 Piston Kit with Gaskets PK1344

    WISECO

    $224.95
    Your YZ125's piston is the heart of engine performance—worn or undersized pistons rob you of power, throttle response, and reliability. The Wiseco PK1344 Pro-Lite Kit restores that performance with precision-engineered components built to survive the...
    09030283
    SKU:
    09030283
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    PISTON DIAMETER METRIC:
    53.95 MM
    SKIRT COATING:
    NON-COATED
    STROKE LENGTH METRIC:
    54.50 MM
    BORE - OVERSIZE METRIC:
    STANDARD
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    54.00 MM
    DISPLACEMENT:
    125 CC
    MODEL:
    PRO-LITE
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    TOP END
    BORE - OVERSIZE:
    STANDARD
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    Qty in Cart: 0
    Quantity:
    Price:
    $224.95
    Subtotal:
  • Wiseco Piston Kit for Honda CR80R 1993-2002 PK1185

    Wiseco Piston Kit for Honda CR80R 1993-2002 PK1185

    WISECO

    $214.95
    The CR80R demands a piston kit that can handle high RPM abuse while maintaining bore integrity—the Wiseco PK1185 delivers exactly that. This CNC-machined, aerospace-grade aluminum piston assembly restores lost compression and sealing, bringing your...
    09030285
    SKU:
    09030285
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    BORE - OVERSIZE METRIC:
    +5.00 MM
    COOLING SYSTEM:
    LIQUID COOLED
    UNITS:
    EACH
    BORE SIZE METRIC:
    52.00 MM
    MODEL:
    RACER'S CHOICE
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    TOP END
    BORE - OVERSIZE:
    +5,00 MM
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    47.80 MM
    DISPLACEMENT:
    101,5 CC
    PISTON MATERIAL:
    ALUMINUM
    Qty in Cart: 0
    Quantity:
    Price:
    $214.95
    Subtotal:
  • Wiseco 54mm Piston Kit with Gaskets for 2003 Honda CR125R PK1265

    Wiseco 54mm Piston Kit with Gaskets for 2003 Honda CR125R PK1265

    WISECO

    $243.95
    A worn or damaged piston directly compromises your CR125R's compression, throttle response, and fuel efficiency. This complete Wiseco kit eliminates guesswork with OEM-spec fitment and quality gaskets, getting your bike back to peak performance without...
    09030286
    SKU:
    09030286
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    54.50 MM
    UNITS:
    KIT
    BORE SIZE METRIC:
    54.00 MM
    DISPLACEMENT:
    125 CC
    MODEL:
    PRO-LITE
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    TOP END
    PISTON DIAMETER METRIC:
    53.95 MM
    SKIRT COATING:
    NON-COATED
    Qty in Cart: 0
    Quantity:
    Price:
    $243.95
    Subtotal:
  • Wiseco Piston Kit with Gaskets for 1993-1998 Suzuki RMX250 PK1339

    Wiseco Piston Kit with Gaskets for 1993-1998 Suzuki RMX250 PK1339

    WISECO

    $277.95
    A worn or damaged piston directly compromises combustion efficiency, throttle response, and overall engine reliability—especially critical on a 2-stroke like the RMX250 where every combustion cycle demands precision. The Wiseco PK1339 Pro-Lite kit...
    09030287
    SKU:
    09030287
    Availability:
    Ships Same Business Day
    Weight:
    1.50 LBS
    BORE - OVERSIZE METRIC:
    STANDARD
    PISTON DIAMETER METRIC:
    66.94 MM
    PRODUCT NAME:
    REBUILD KIT
    BORE - OVERSIZE:
    STANDARD
    DISPLACEMENT:
    246 CC
    ENGINE TYPE:
    2-STROKE
    SKIRT COATING:
    NON-COATED
    STROKE LENGTH METRIC:
    70.80 MM
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    BORE SIZE METRIC:
    67.00 MM
    MODEL:
    PRO-LITE
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    UNITS:
    KIT
    $277.95
    Qty in Cart: 0
    Quantity:
    Price:
    $277.95
    Subtotal:
  • Wiseco Yamaha YZ125 2001 54mm Piston Kit PK1348

    Wiseco Yamaha YZ125 2001 54mm Piston Kit PK1348

    WISECO

    $225.95
    If you're running a 2001 YZ125 and want to maximize power output without sacrificing reliability, a quality piston kit is non-negotiable. The Wiseco PK1348 delivers the precision engineering and lightweight construction that separates competitive riders...
    09030288
    SKU:
    09030288
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    BORE - OVERSIZE METRIC:
    STANDARD
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    DISPLACEMENT:
    124 CC
    STROKE LENGTH METRIC:
    54.50 MM
    BORE - OVERSIZE:
    STANDARD
    BORE SIZE METRIC:
    54.00 MM
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    TOP END
    MODEL:
    PRO-LITE
    PISTON DIAMETER METRIC:
    53.95 MM
    RIDING STYLE:
    OFF-ROAD
    SKIRT COATING:
    NON-COATED
    UNITS:
    KIT
    $225.95
    Qty in Cart: 0
    Quantity:
    Price:
    $225.95
    Subtotal:
  • Wiseco Piston Kit for Honda CR250R 1992-1996 PK1128

    Wiseco Piston Kit for Honda CR250R 1992-1996 PK1128

    WISECO

    $259.95
    If you're running a CR250R from the early '90s, piston wear directly impacts your engine's ability to hold compression and deliver peak power. The Wiseco PK1128 restores that lost performance through precision engineering and proven materials, giving you...
    09030292
    SKU:
    09030292
    Availability:
    Ships Same Business Day
    Weight:
    1.35 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    BORE SIZE METRIC:
    66.40 MM
    PISTON DIAMETER METRIC:
    66.36 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    DISPLACEMENT:
    249 CC
    MODEL:
    PRO-LITE
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    TOP END
    SKIRT COATING:
    NON-COATED
    STROKE LENGTH METRIC:
    72.00 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $259.95
    Subtotal:
  • Wiseco Piston Honda CRF450R 2002 431M07000

    Wiseco Piston Honda CRF450R 2002 431M07000

    WISECO

    $199.95
    If you're rebuilding a Honda CRF450R engine or refreshing a high-mileage top end, a quality OEM-equivalent piston is non-negotiable—it's the foundation of reliable horsepower and longevity. The Wiseco Piston (431M07000) delivers the precision fit and...
    431M07000
    SKU:
    431M07000
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    PISTON DIAMETER METRIC:
    69.95 MM
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    DISPLACEMENT:
    248 CC
    ENGINE TYPE:
    2-STROKE
    SKIRT COATING:
    NON-COATED
    STROKE LENGTH METRIC:
    64.40 MM
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    70.00 MM
    MODEL:
    FORGED SERIES
    PRODUCT NAME:
    PISTON KIT
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $199.95
    Subtotal:
  • Wiseco Piston Honda CRF450R 2002-2008 431M07050

    Wiseco Piston Honda CRF450R 2002-2008 431M07050

    WISECO

    $221.95
    If you're running a Honda CRF450R from the 2002-2008 generation, a worn or damaged piston directly impacts combustion efficiency, throttle response, and overall engine reliability. The Wiseco 431M07050 piston kit restores lost performance while...
    431M07050
    SKU:
    431M07050
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    BORE - OVERSIZE METRIC:
    +0.50 MM
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    STROKE LENGTH METRIC:
    64.40 MM
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    BORE - OVERSIZE:
    +0,50 MM
    DISPLACEMENT:
    248 CC
    RIDING STYLE:
    OFF-ROAD
    SKIRT COATING:
    NON-COATED
    BORE SIZE METRIC:
    70.50 MM
    MODEL:
    FORGED SERIES
    PISTON DIAMETER METRIC:
    70.45 MM
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $221.95
    Subtotal:
  • Wiseco Piston Kit 71mm Oversize for Honda CR250R 1978-1980 431M07100

    Wiseco Piston Kit 71mm Oversize for Honda CR250R 1978-1980 431M07100

    WISECO

    $221.95
    If you're running a Honda CR250R with high mileage or planning a performance build, a quality piston kit is essential to restore compression and unlock the engine's full potential. Wiseco's forged construction and CNC precision ensure reliable power...
    431M07100
    SKU:
    431M07100
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    MODEL:
    FORGED SERIES
    SKIRT COATING:
    NON-COATED
    DISPLACEMENT:
    248 CC
    ENGINE TYPE:
    2-STROKE
    PISTON DIAMETER METRIC:
    70.95 MM
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    64.40 MM
    BORE - OVERSIZE:
    +1,00 MM
    BORE - OVERSIZE METRIC:
    +1.00 MM
    BORE SIZE METRIC:
    71.00 MM
    PRODUCT NAME:
    PISTON KIT
    UNITS:
    KIT
    $221.95
    Qty in Cart: 0
    Quantity:
    Price:
    $221.95
    Subtotal:
  • Wiseco Piston Kit 72mm Oversize for Honda CR250R 1978-1980 431M07200

    Wiseco Piston Kit 72mm Oversize for Honda CR250R 1978-1980 431M07200

    WISECO

    $232.95
    If you're rebuilding a CR250R or ATC250R engine, piston quality directly impacts reliability and power delivery. Wiseco's high-silicon aluminum construction handles the extreme combustion pressures of 2-stroke performance while maintaining the tight...
    431M07200
    SKU:
    431M07200
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    DISPLACEMENT:
    248 CC
    PISTON DIAMETER METRIC:
    71.95 MM
    SKIRT COATING:
    NON-COATED
    MODEL:
    FORGED SERIES
    PRODUCT NAME:
    PISTON KIT
    UNITS:
    KIT
    BORE - OVERSIZE METRIC:
    +2.00 MM
    BORE SIZE METRIC:
    72.00 MM
    STROKE LENGTH METRIC:
    64.40 MM
    BORE - OVERSIZE:
    +2,00 MM
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    $232.95
    Qty in Cart: 0
    Quantity:
    Price:
    $232.95
    Subtotal:
  • Wiseco 85mm Piston Kit for 1983-1984 Honda XR350R 4286M08500

    Wiseco 85mm Piston Kit for 1983-1984 Honda XR350R 4286M08500

    WISECO

    $184.95
    If you're running a 1983-1984 Honda XR350R, piston wear directly impacts power delivery, fuel efficiency, and engine reliability. The Wiseco 85mm Piston Kit restores lost performance and allows you to safely push higher compression ratios without...
    4286M08500
    SKU:
    4286M08500
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    DISPLACEMENT:
    339 CC
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    PRODUCT NAME:
    PISTON KIT
    STROKE LENGTH METRIC:
    61.30 MM
    BORE SIZE METRIC:
    85.00 MM
    ENGINE TYPE:
    4-STROKE
    BORE - OVERSIZE:
    +1,00 MM
    BORE - OVERSIZE METRIC:
    +1.00 MM
    COMPRESSION RATIO IMPERIAL:
    10.0:1
    PISTON DIAMETER METRIC:
    84.95 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    MODEL:
    FORGED SERIES
    SKIRT COATING:
    NON-COATED
    $184.95
    Qty in Cart: 0
    Quantity:
    Price:
    $184.95
    Subtotal:
  • Wiseco Piston Kit Standard 86mm Kawasaki KX 500 1988-2004 575M08600

    Wiseco Piston Kit Standard 86mm Kawasaki KX 500 1988-2004 575M08600

    WISECO

    $243.95
    The Wiseco 86mm piston kit is engineered for the KX500 to deliver measurable gains in throttle response and combustion efficiency. If you're running stock pistons, you're leaving horsepower on the table—this upgrade is essential for both competitive...
    575M08600
    SKU:
    575M08600
    Availability:
    Ships Same Business Day
    Weight:
    1.05 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    86.00 MM
    UNITS:
    EACH
    BORE SIZE METRIC:
    86.00 MM
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    STROKE LENGTH:
    86,00 MM
    DISPLACEMENT:
    499 CC
    Qty in Cart: 0
    Quantity:
    Price:
    $243.95
    Subtotal:
  • Wiseco Piston Kit 1988-2004 Kawasaki KX 500 575M08650

    Wiseco Piston Kit 1988-2004 Kawasaki KX 500 575M08650

    WISECO

    $234.95
    If you're running a KX500 at the limit—whether on the track or the trail—piston wear and loss of compression will eventually compromise your power. The Wiseco Piston Kit restores full performance potential and adds measurable horsepower through advanced...
    575M08650
    SKU:
    575M08650
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    BORE SIZE METRIC:
    86.50 MM
    DISPLACEMENT:
    499 CC
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    STROKE LENGTH:
    86,00 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    STROKE LENGTH METRIC:
    86.00 MM
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE:
    +0,50 MM
    BORE - OVERSIZE METRIC:
    +0.50 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $234.95
    Subtotal:
  • Wiseco Piston Kit 1988-2004 Kawasaki KX 500 575M08700

    Wiseco Piston Kit 1988-2004 Kawasaki KX 500 575M08700

    WISECO

    $234.95
    If you're rebuilding a KX500 or pushing your machine harder on the track, piston quality directly impacts power delivery, reliability, and how long your engine lasts between rebuilds. The Wiseco 575M08700 kit delivers the precision engineering and...
    575M08700
    SKU:
    575M08700
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    BORE - OVERSIZE:
    +1,00 MM
    DISPLACEMENT:
    499 CC
    PRODUCT NAME:
    PISTON
    BORE - OVERSIZE METRIC:
    +1.00 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    STROKE LENGTH METRIC:
    86.00 MM
    UNITS:
    EACH
    STROKE LENGTH:
    86,00 MM
    BORE SIZE METRIC:
    87.00 MM
    RIDING STYLE:
    OFF-ROAD
    Qty in Cart: 0
    Quantity:
    Price:
    $234.95
    Subtotal:
  • Wiseco Piston Standard Yamaha YTZ250 Tri-Z 1985 515M06800

    Wiseco Piston Standard Yamaha YTZ250 Tri-Z 1985 515M06800

    WISECO

    $204.95
    A worn or damaged piston compromises engine efficiency, throttle response, and overall reliability—especially critical for serious riders pushing their YTZ 250 Tri-Z to its limits. The Wiseco piston restores lost performance through precision engineering...
    515M06800
    SKU:
    515M06800
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    DISPLACEMENT:
    246,8 CC
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    68.00 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH:
    68,00 MM
    UNITS:
    EACH
    STROKE LENGTH METRIC:
    68.00 MM
    PISTON MATERIAL:
    FORGED
    $204.95
    Qty in Cart: 0
    Quantity:
    Price:
    $204.95
    Subtotal:
  • Wiseco Piston Kit Yamaha IT 250 1983 515M06900

    Wiseco Piston Kit Yamaha IT 250 1983 515M06900

    WISECO

    $223.95
    A worn or damaged piston directly compromises engine compression, throttle response, and overall reliability—especially critical in a two-stroke where the piston cycles thousands of times per minute. The Wiseco 515M06900 restores your IT 250 to factory...
    515M06900
    SKU:
    515M06900
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    BORE - OVERSIZE:
    +1,00 MM
    PISTON MATERIAL:
    FORGED
    STROKE LENGTH METRIC:
    68.00 MM
    DISPLACEMENT:
    246,8 CC
    BORE - OVERSIZE METRIC:
    +1.00 MM
    BORE SIZE METRIC:
    69.00 MM
    PRODUCT NAME:
    PISTON
    RIDING STYLE:
    OFF-ROAD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    STROKE LENGTH:
    68,00 MM
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $223.95
    Subtotal:
  • Wiseco Piston Standard Kawasaki KX 80 1984-1985 514M04800

    Wiseco Piston Standard Kawasaki KX 80 1984-1985 514M04800

    WISECO

    $141.95
    A piston is the engine's hardest-working component—when it fails, your bike is done. The Wiseco Piston for Kawasaki KX80 (1984-1985) delivers the durability and power output you need to push your bike hard without gambling on reliability. Built with...
    514M04800
    SKU:
    514M04800
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    BORE SIZE METRIC:
    48.00 MM
    DISPLACEMENT:
    82 CC
    STROKE LENGTH:
    45,80 MM
    BORE - OVERSIZE METRIC:
    STANDARD
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    BORE - OVERSIZE:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    STROKE LENGTH METRIC:
    45.80 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $141.95
    Subtotal:
  • Wiseco Piston Kit with Gaskets for Kawasaki KX250 2007-2008 PK1598

    Wiseco Piston Kit with Gaskets for Kawasaki KX250 2007-2008 PK1598

    WISECO

    $307.95
    If you're rebuilding a KX250F or pushing your engine to its limits, piston quality directly impacts reliability and power output. The Wiseco PK1598 delivers forged aluminum construction that handles the demands of competitive riding while maintaining the...
    09030932
    SKU:
    09030932
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    PRODUCT NAME:
    REBUILD KIT
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    76.96 MM
    PISTON MATERIAL:
    2618 ALUMINUM ALLOY
    TYPE:
    TOP END
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    13.5:1
    RIDING STYLE:
    OFF-ROAD
    SKIRT COATING:
    ARMORGLIDE®
    UNITS:
    KIT
    BORE SIZE METRIC:
    77.00 MM
    DISPLACEMENT:
    250 CC
    MODEL:
    FORGED SERIES
    STROKE LENGTH METRIC:
    53.60 MM
    $307.95
    Qty in Cart: 0
    Quantity:
    Price:
    $307.95
    Subtotal:
  • Wiseco Piston Kit 47mm 10.5:1 Compression for Honda CRF70F 2004-2012 PK1729

    Wiseco Piston Kit 47mm 10.5:1 Compression for Honda CRF70F 2004-2012 PK1729

    WISECO

    $182.95
    If you're running a CRF70F and want measurable gains in power and throttle response, the Wiseco PK1729 piston kit delivers the compression ratio and engineering precision needed to unlock your bike's potential. This is a direct bolt-in upgrade that...
    09030933
    SKU:
    09030933
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    SKIRT COATING:
    NON-COATED
    UNITS:
    KIT
    DISPLACEMENT:
    72 CC
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    PISTON DIAMETER METRIC:
    46.97 MM
    PRODUCT NAME:
    REBUILD KIT
    STROKE LENGTH METRIC:
    41.40 MM
    BORE SIZE METRIC:
    47.00 MM
    MODEL:
    FORGED SERIES
    $182.95
    Qty in Cart: 0
    Quantity:
    Price:
    $182.95
    Subtotal:
  • Wiseco Piston Kit for Kawasaki KX450F 2009-2012 13.5:1 Compression PK1840

    Wiseco Piston Kit for Kawasaki KX450F 2009-2012 13.5:1 Compression PK1840

    WISECO

    $339.95
    If you're running a 2009-2012 Kawasaki KX450F at the edge of its limits, piston failure isn't a question of if—it's when. The Wiseco PK1840 raises your compression ratio to 13.5:1, unlocking measurable gains in power and throttle response while...
    09030935
    SKU:
    09030935
    Availability:
    Ships Same Business Day
    Weight:
    1.85 LBS
    BORE - OVERSIZE:
    STANDARD
    ENGINE TYPE:
    4-STROKE
    MODEL:
    FORGED SERIES
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    62.10 MM
    TYPE:
    TOP END
    UNITS:
    KIT
    PISTON MATERIAL:
    2618 ALUMINUM ALLOY
    PRODUCT NAME:
    REBUILD KIT
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    96.00 MM
    COMPRESSION RATIO IMPERIAL:
    13.5:1
    DISPLACEMENT:
    449 CC
    PISTON DIAMETER METRIC:
    95.95 MM
    SKIRT COATING:
    ARMORGLIDE®
    Qty in Cart: 0
    Quantity:
    Price:
    $339.95
    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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