ATV/UTV Piston and Ring Kits
ATV/UTV Piston & Ring Kits at JJ Motorsports
Rebuild your ATV/UTV engine with premium forged piston and ring kits from JJ Motorsports, featuring high-compression and big-bore options for massive power gains on Yamaha YFZ450, Honda TRX450R, Suzuki LTZ400, and more. These race-proven kits deliver superior durability and performance in off-road, trail, and dune conditions.
Shop Millennium, JE Pistons, and Wossner piston kits for championship-level quality. Explore related categories such as ATV/UTV engine for cylinders and gaskets, or ATV/UTV for cams and exhaust to complete your top-end rebuild and dominate the track or trail.
Top ATV/UTV Piston & Ring Kits
- Millennium Piston Kit K8897D500-2 – +5.00mm big-bore piston kit; forged for Yamaha YFZ450/R with rings, pin, and clips.
- JE Pistons Piston Kit 261546 – High-compression forged piston; includes rings and wrist pin for Honda TRX450R.
- Wossner Piston Kit 8094D050 – +0.50mm oversize piston kit; lightweight forged with moly coating for Suzuki LTZ400.
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
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Wossner Piston Kit Honda TRX420 Rancher 2007-2025 10.0:1 Compression 8869D050
WOSSNER
$164.00A worn or damaged piston directly compromises engine efficiency, power delivery, and reliability—especially in high-demand riding conditions. The Wossner Piston Kit delivers OEM-quality replacement engineered to restore your TRX420's performance while...09106114- SKU:
- 09106114
- Availability:
- Ships Same Business Day
- Weight:
- 0.76 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- +0,50 MM
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PISTON SIZE METRIC:
- 86.95 MM
- UNITS:
- KIT
- BORE SIZE METRIC:
- 87.00 MM
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- PRO SERIES
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- ATV
$164.00 -
On Sale
ATHENA Piston Kit S4C06800001A
ATHENA
MSRP: $134.95Now: $121.00Was: $134.95Includes rings, clips and pin, Easy-to-follow step-by-step installation instructions09101332- SKU:
- 09101332
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PISTON DIAMETER METRIC:
- 67.95 MM
- PISTON SIZE METRIC:
- STANDARD SIZE A
- PRODUCT NAME:
- PISTON
- STYLE:
- CAST BIG BORE
- COMPRESSION RATIO IMPERIAL:
- 11.9:1
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
MSRP: $134.95Now: $121.00Was: $134.95 -
On Sale
ATHENA Piston Kit S4C06800001B
ATHENA
MSRP: $134.95Now: $121.00Was: $134.95Includes rings, clips and pin, Easy-to-follow step-by-step installation instructions09101333- SKU:
- 09101333
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PISTON DIAMETER METRIC:
- 67.96 MM
- PRODUCT NAME:
- PISTON
- STYLE:
- CAST BIG BORE
- ENGINE TYPE:
- 2-STROKE
- PISTON SIZE METRIC:
- STANDARD SIZE B
- COMPRESSION RATIO IMPERIAL:
- 11.9:1
- RIDING STYLE:
- ATV
- UNITS:
- EACH
MSRP: $134.95Now: $121.00Was: $134.95Qty in Cart: 0Quantity:Price:MSRP: $134.95Now: $121.00Was: $134.95Subtotal: -
VERTEX Piston Kit 23909A
VERTEX
$235.95Precision-engineered pistons are the foundation of reliable, high-revving performance—and the VERTEX 23909A kit delivers the durability and break-in characteristics serious builders demand. With proprietary heat-treatment and a slick Molybdenum...09103384- SKU:
- 09103384
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- PISTON DIAMETER METRIC:
- 84.95 MM
- PRODUCT NAME:
- PISTON KIT
- CYLINDER DIAMETER METRIC:
- 85.00 MM
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
- DISPLACEMENT:
- 750 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- UTV
$235.95 -
VERTEX Piston Kit 23909B
VERTEX
$235.95Precise piston fitment and durability are non-negotiable in high-performance racing. The VERTEX Piston Kit 23909B delivers the metallurgical refinement and surface engineering your engine demands for consistent power delivery and extended component life...09103385- SKU:
- 09103385
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- PRODUCT NAME:
- PISTON KIT
- DISPLACEMENT:
- 750 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- UTV
- CYLINDER DIAMETER METRIC:
- 85.00 MM
- PISTON DIAMETER METRIC:
- 84.96 MM
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
$235.95 -
VERTEX Piston Kit 23909C
VERTEX
$127.11The VERTEX Piston Kit 23909C delivers the durability and precision required for sustained high-RPM performance and reliable break-in cycles. Built with advanced heat-treatment and a specialized skirt coating, these pistons minimize friction during...09103386- SKU:
- 09103386
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- PRODUCT NAME:
- PISTON KIT
- CYLINDER DIAMETER METRIC:
- 85.00 MM
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
- DISPLACEMENT:
- 750 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- UTV
- PISTON DIAMETER METRIC:
- 84.97 MM
$127.11 -
VERTEX Piston Kit 23532A
VERTEX
$315.95A quality piston kit is the foundation of reliable engine performance, and the VERTEX Piston Kit 23532A delivers the durability and precision needed for sustained high-RPM operation. The advanced heat-treatment process and specialized skirt coating...09101840- SKU:
- 09101840
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
$315.95 -
VERTEX Piston Kit - Standard 23162
VERTEX
$208.95A quality piston kit is fundamental to engine reliability and performance longevity. The VERTEX Piston Kit - Standard 23162 delivers precision engineering with proven durability, ensuring consistent combustion and reduced wear under demanding conditions...09101065- SKU:
- 09101065
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- CYLINDER DIAMETER METRIC:
- 85.00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- CAST REPLICA
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- CAST
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 9.3:1
- DISPLACEMENT:
- 400 CC
- PISTON DIAMETER METRIC:
- 84.95 MM
- PISTON SIZE METRIC:
- STANDARD
$208.95 -
VERTEX Piston Kit 23162050
VERTEX
$181.95Precision-engineered pistons demand materials and processes that withstand extreme combustion pressures and thermal cycling without compromise. The VERTEX Piston Kit 23162050 delivers the durability and consistency your engine needs, whether you're...09101066- SKU:
- 09101066
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.3:1
- DISPLACEMENT:
- 400 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- CAST REPLICA
- BORE - OVERSIZE METRIC:
- +0.50 MM
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- BORE - OVERSIZE:
- +0,50 MM
- PISTON DIAMETER METRIC:
- 85.47 MM
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 85.50 MM
- PISTON MATERIAL:
- CAST
- PRODUCT NAME:
- PISTON KIT
$181.95Qty in Cart: 0Quantity:Price:$181.95Subtotal: -
VERTEX Piston Kit 24024C
VERTEX
$117.95Whether you're building a high-revving engine or refreshing tired cylinders, the VERTEX Piston Kit 24024C delivers the durability and precision required for sustained performance. The proprietary heat-treatment process and low-friction skirt coating...09103825- SKU:
- 09103825
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$117.95 -
VERTEX Piston Kit - High Compression 24025B
VERTEX
$195.95If you're building or rebuilding an engine that demands reliability under sustained high-RPM operation, the VERTEX Piston Kit 24025B delivers the durability and precision required for serious performance applications. The T-5 heat treatment and...09103827- SKU:
- 09103827
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- CYLINDER DIAMETER METRIC:
- 85.00 MM
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- COMPRESSION RATIO IMPERIAL:
- 12.1:1
- DISPLACEMENT:
- 750 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 84.96 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
$195.95 -
VERTEX Piston Kit 24028A
VERTEX
$289.95Whether you're rebuilding a tired engine or stepping up compression for more power, the VERTEX Piston Kit 24028A delivers the precision and durability required for sustained high-RPM performance. Each piston is engineered with advanced materials and...09103831- SKU:
- 09103831
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 92.96 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- CYLINDER DIAMETER METRIC:
- 93.00 MM
- PRODUCT NAME:
- PISTON KIT
- DISPLACEMENT:
- 1000 CC
- RIDING STYLE:
- UTV
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
$289.95 -
VERTEX Piston Kit VTKTC22951B-1
VERTEX
$348.95Maximize engine reliability and extend component life with the VERTEX Piston Kit VTKTC22951B-1, engineered for sustained high-RPM performance and rapid break-in. The advanced T-5 heat treatment and molybdenum disulfide skirt coating reduce friction...09103839- SKU:
- 09103839
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
$348.95 -
VERTEX Piston Kit VTKTC23623A
VERTEX
$341.95If you're building a high-output engine or rebuilding after a failure, piston quality directly impacts reliability under extreme cylinder pressures and temperatures. The VERTEX Piston Kit VTKTC23623A delivers the durability and precision needed for...09103867- SKU:
- 09103867
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- PISTON MATERIAL:
- CAST
- PRODUCT NAME:
- TOP END PISTON KIT
- RIDING STYLE:
- UTV
- UNITS:
- KIT
- PISTON DIAMETER METRIC:
- 101.95 MM
- DISPLACEMENT:
- 700 CC
- COMPRESSION RATIO IMPERIAL:
- 9.2:1
- CYLINDER DIAMETER METRIC:
- 102.00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- CAST REPLICA
$341.95 -
VERTEX Piston Kit VTKTC23623B
VERTEX
$307.95A quality piston kit is the foundation of engine reliability under sustained high RPM operation. VERTEX's VTKTC23623B delivers the metallurgical precision and surface engineering necessary to withstand extreme combustion pressures while minimizing...09103868- SKU:
- 09103868
- Availability:
- Ships Same Business Day
- Weight:
- 1.57 LBS
- PISTON MATERIAL:
- CAST
- RIDING STYLE:
- UTV
- UNITS:
- KIT
- DISPLACEMENT:
- 700 CC
- PRODUCT NAME:
- TOP END PISTON KIT
- STYLE:
- CAST REPLICA
- COMPRESSION RATIO IMPERIAL:
- 9.2:1
- CYLINDER DIAMETER METRIC:
- 102.00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 101.96 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
$307.95Qty in Cart: 0Quantity:Price:$307.95Subtotal: -
VERTEX Piston Kit VTKTC23908A
VERTEX
$604.95When you're pushing your engine to the limit, piston reliability becomes non-negotiable. The VERTEX Piston Kit VTKTC23908A delivers the durability and precision needed for sustained high-RPM performance, with factory-proven metallurgy and coatings...09103870- SKU:
- 09103870
- Availability:
- Ships Same Business Day
- Weight:
- 3.80 LBS
$604.95 -
On Sale
Wiseco Piston 100.5mm 11:1 Compression Yamaha YFM660R 2001-2005 4737M10050
WISECO
MSRP: $258.95Now: $212.00Was: $258.95Stock pistons wear out under sustained high RPM or aggressive riding, causing compression loss, increased blowby, and reduced power output. The Wiseco 4737M10050 restores your YFM660R's performance with a high-silicon alloy construction that withstands...4737M10050- SKU:
- 4737M10050
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- RIDING STYLE:
- UTV
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- DISPLACEMENT:
- 660 CC
- UNITS:
- KIT
- BORE SIZE METRIC:
- 100.50 MM
- PISTON DIAMETER METRIC:
- 100.42 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- SKIRT COATING:
- ARMORGLIDE®
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 84.00 MM
MSRP: $258.95Now: $212.00Was: $258.95Qty in Cart: 0Quantity:Price:MSRP: $258.95Now: $212.00Was: $258.95Subtotal: -
Wiseco Piston Kit for Yamaha YFZ350 Banshee 1987-2006 PK141
WISECO
$369.95If you're serious about rebuilding your Banshee's top end, a quality piston kit isn't optional—it's essential. Wiseco's forged pistons are engineered to handle the demands of 2-stroke performance, delivering consistent power delivery while resisting the...09030618- SKU:
- 09030618
- Availability:
- Ships Same Business Day
- Weight:
- 2.18 LBS
- BORE - OVERSIZE:
- +1,00 MM
- STROKE LENGTH METRIC:
- 54.00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- BORE SIZE METRIC:
- 65.00 MM
- DISPLACEMENT:
- 358 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON DIAMETER METRIC:
- 64.92 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
$369.95Qty in Cart: 0Quantity:Price:$369.95Subtotal: -
Wiseco Yamaha YFM700 Grizzly 2007-2013 Piston Kit with Gasket PK1420
WISECO
$334.95When you're rebuilding a YFM700 Grizzly engine, component quality directly impacts reliability and power delivery. Wiseco's forged piston kits are engineered to handle the demands of high-performance riding while maintaining the tight tolerances...09030619- SKU:
- 09030619
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- BORE - OVERSIZE:
- +1,00 MM
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- 103.00 MM
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE METRIC:
- +1.00 MM
- DISPLACEMENT:
- 700 CC
- MODEL:
- FORGED SERIES
- PISTON DIAMETER METRIC:
- 102.94 MM
- SKIRT COATING:
- ARMORGLIDE®
- STROKE LENGTH METRIC:
- 84.00 MM
- COMPRESSION RATIO IMPERIAL:
- 9.2:1
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- KIT
$334.95 -
Wiseco Piston Kit 83.50mm Oversize for 1995-2001 Polaris Xplorer 400 4x4 675M08350
WISECO
$184.95If you're running a 1995-2001 Polaris Xplorer 400 and looking to maximize displacement and compression, this 83.50mm oversize Wiseco piston kit is engineered to deliver the reliability and power output that serious racers demand. Built from high-silicon...675M08350- SKU:
- 675M08350
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- DISPLACEMENT:
- 400 CC
- STROKE LENGTH:
- 70,00 MM
- STROKE LENGTH METRIC:
- 70.00 MM
- BORE SIZE METRIC:
- 83.50 MM
- BORE - OVERSIZE:
- +0,50 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$184.95Qty in Cart: 0Quantity:Price:$184.95Subtotal:
