We keep these in stock in 90 and 90.5mm. 6-8 week lead time on any custom bore sizes
4 Piston Wiseco Pro Stock Pistons
The 4P Wiseco Pro Stock pistons are specifically designed for high rpm all motor drag racing. This is the piston used in our all motor class dominating Super99 and Reaper engine builds. They have a 2 ring design for reduced friction and proprietary coating blend for longevity and friction.
90mm and 90.5mm available.