Wiseco Pistons
Wiseco K774M8625 Professional Series Forged Piston Set Bore - 86.25mm 6-Cylinder
Wiseco Pistons K774M865 Performance Forged Piston Set 86.5mm Bore 6-Cylinder
Wiseco Pistons K767M8625 Professional Series Forged Piston Set Bore - 86.25mm 6-Cylinder
Wiseco Pistons 40248M10000 Forged Piston Kit Bore Compression - 4-Stroke 100mm 9.5 1
Wiseco 4260H Piston Ring Set 4.260 in. Bore 1/16 x 1/16 x 3/16 Shelf Stock
Wiseco PK1056 72mm Forged Piston Kit for Yamaha YFM/YFB250 ATVs
Wiseco PK1054 Top End Piston Kit with Gasket Set - 71.00mm 8.7 1 for YFM/YFB250
Wiseco PK1053 Kawasaki KLF KEF KVF 300 Top End Piston Kit 77.5mm 1.50mm Oversize
Wiseco PK1046 76mm Top End Piston Kit with Gaskets 10.25:1 Compression
Wiseco PK1017 Top End Piston Kit 82.0mm Bore Honda ATC350X TRX350 1985-1989
Wiseco PK1176 Pro-Lite Top End Piston Kit Bore - 2-Stroke 56.0mm
Wiseco Pistons PK1174 Pro-Lite Piston Kit for 1998-2000 Yamaha YZ125 54.5mm
Wiseco PK1238 Piston Kit - 79mm 04-05 KX250F 04-06 RMZ250 4842M
Wiseco PK1216 Pro-Lite Top End Piston Kit 48.5mm Bore for Honda CR85R
Wiseco PK1213 Pro-Lite Top End Piston Kit for Suzuki - 2-Stroke 67.50mm 1.10mm RM250
Wiseco PK1203 Pro-Lite 2-Stroke Piston Kit 48.0mm for Yamaha YZ85
Wiseco PK1170 Pro-Lite Forged Piston Kit 67.5mm for Honda CR250R 1997-2001
Wiseco PK1163 2-Stroke Top End Piston Kit 42.0mm +2.00 Overbore (653M)
Wiseco PK1345 Pro-Lite 2-Stroke Piston Kit 54.5mm Bore for YZ125
Wiseco PK1078 Pro-Lite Forged Piston Kit 67.25mm 1.25mm Oversize (526M06725)
Wiseco PK1077 Pro-Lite Top End Piston Kit 67.0mm +1.00mm Oversize 2-Stroke
Wiseco PK1076 Pro-Lite 2-Stroke Piston Kit 66.75mm (+0.030") Oversize
Wiseco PK1074 Pro-Lite Forged Piston Kit 66.25mm (.010 Over) 2-Stroke
Wiseco PK1065 96mm 13.0:1 Forged ATV Piston Kit with Top-End Gasket Set
Wiseco PK1395 GP Series 2-Stroke Top End Piston Kit 56mm +2mm Overbore
Wiseco Pistons PK1392 Top End Piston Kit for Yamaha YZ125 58mm Bore
Wiseco PK1391 GP Series Top End Piston Kit 56mm Bore Yamaha YZ125
Wiseco PK1523 Pro-Lite Top End Piston Kit Bore - 2-Stroke 48mm
Wiseco PK1200 Forged Piston Kit 2002-2010 Yamaha YZ250 67.5mm 804M
Wiseco PK1199 Pro-Lite Piston Kit 67.0mm (804M) for Yamaha YZ250
Wiseco PK1197 Pro-Lite Piston Kit 68.5mm +2.10mm Overbore Honda CR250R 2-Stroke
Wiseco PK1192 Pro-Lite Top-End Piston Kit 54.5mm 0.50mm Oversize for 2002 YZ125
Wiseco PK1182 Pro-Lite Top End Piston Kit Bore - 2-Stroke 55.0mm
Wiseco PK1178 45.0mm Piston Kit for KX65 & RM65 Two-Stroke Engines
Wiseco PK1582 2003 Honda CR125 GP Series 56mm Forged Piston Kit
Wiseco Pistons PK1581 Top End Rebuild Kit for 2003 Honda CR125 54mm GP Series
Wiseco PK1580 GP Series Forged Piston Kit Honda - 56mm 2000-2002 CR125
Wiseco PK1579 GP Series Forged Piston Kit Honda - 54mm 762M 00-02 CR125
Wiseco PK1513 Pro-Lite Top End Piston Kit Bore - 2-Stroke 56mm
Wiseco PK1449 57mm Forged Piston Kit 2004 Honda CR125R Two-Stroke Top End
Wiseco PK1555 Pro-Lite Top End Piston Kit - 48mm for YZ80 646M
Wiseco Pistons: Over 80 Years of Forged Performance
When it comes to high-performance engine internals, few names carry as much weight as Wiseco. Founded more than 80 years ago and headquartered in Mentor, Ohio, Wiseco has grown from a passion-driven racing operation into one of the world's foremost manufacturers of forged pistons for both automotive and powersport applications. Their pistons are engineered, forged, and machined on cutting-edge equipment right in the United States — a commitment to domestic craftsmanship that enthusiasts and professional racers have come to rely on.
At the heart of Wiseco's lineup are their engine pistons — the product that built the brand's legendary reputation. Unlike cast pistons, Wiseco's forged pistons are produced under intense pressure, aligning the grain structure of the aluminum for superior tensile strength and thermal resistance. Whether the application is a high-revving dirt bike, a boosted street car, a snowmobile pushing through deep powder, or a drag motor chasing elapsed-time records, Wiseco engineers a piston to suit the specific demands of each engine. Their catalog spans both 2-stroke and 4-stroke platforms, covering hundreds of engine applications for motorcycles, ATVs, UTVs, personal watercraft, snowmobiles, and performance automobiles.
For riders and builders focused on the powersport world, Wiseco's dedicated powersport pistons category delivers that same forged-aluminum precision tuned specifically for the unique demands of off-road and on-water machines. From Supercross champions to mountain snowmobile riders, Wiseco's powersport piston technology has proven itself at every level of competition.
Wiseco doesn't stop at pistons alone. A proper engine build requires complementary components, and the brand delivers. Their engine piston ring compressors are purpose-built tools that simplify and protect the installation process, ensuring rings seat correctly without damage — a small but critical step in any successful rebuild. For builders tackling a complete overhaul, Wiseco's engine rebuild kits bundle precision-matched components together, taking the guesswork out of parts sourcing and compatibility. And for those who want to address every wear surface in one go, Wiseco's engine complete assembly overhaul kits provide a comprehensive solution that covers the full scope of an engine restoration.
What sets Wiseco apart isn't just manufacturing quality — it's their deep roots in motorsport culture. Much of the team behind Wiseco's doors are avid riders and racers themselves, which means product development is shaped by real-world feedback from the track and trail. That philosophy — built for racers, by racers — is woven into every component that leaves their Mentor, Ohio facility. Whether you're chasing a championship or simply want the confidence that comes with a freshly rebuilt engine, Wiseco delivers the performance and reliability that serious builders demand.