Wiseco Pistons
Wiseco Pistons W6443 Top End Gasket Kit for Honda Big Bore - CRF450X TRX450R 500cc
Wiseco WK1318 Complete Top-End Piston Kit 81.50mm 0.50mm Oversize for Yamaha 700 2-Stroke Watercraft
Wiseco 40133M10100 4-Stroke Forged Piston Kit KLX650 101mm Oversize 9.5:1 CR
Wiseco Pistons 40128M09300 High-Compression Piston Kit 93mm Bore 11:1 Armorglide Skirt
Wiseco Pistons 40125M09603 High-Performance Piston Kit for Kawasaki KX450F 12.8:1 Compression
Wiseco Pistons 40119M10300 High-Compression Piston Kit 103mm Bore 10:1 Ratio
Wiseco Pistons 40116M07700 High-Performance Piston Kit 77.0mm Bore 13.5:1 Compression Ratio
Wiseco Pistons 40107M09200 Stock Piston Kit 92mm Bore Arctic Cat 550 ATV
Wiseco 40099M09800 4-Stroke Forged Piston Kit 98.00mm Standard Bore Stock Compression
Wiseco PK1909 Pro-Lite 2-Stroke Top End Piston Kit 53mm .020 Overbore
Wiseco Pistons PK1900 Top End Piston Kit Yamaha YZ450F 97mm Bore 12.5:1 Compression
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.