238810 Wiseco Piston Kit Buell S1 S3T 10 1 020

This Wiseco forged piston kit is the definitive upgrade for 1998–2003 Buell S1 White Lightning and S3/S3T Thunderbolt owners looking for more punch from their tube-frame machines. These domed pistons are precision-engineered to provide a 10:1 compression ratio on the stock 3.812-inch stroke, significantly improving combustion efficiency and power output. They are also a perfect fit for 1996 and 1997 models that have been updated with 1998 Thunderstorm heads. By choosing Wiseco forged pistons, you are getting a component that is much tougher than the factory cast versions, capable of handling the heat and stress of aggressive riding. The kit is sold as a pair and comes complete with Hastings piston rings, wrist pins, and circlips for a comprehensive top-end rebuild.