The Pro-Xtreme Pistons are specifically engineered to handle up to 2000 HP

after they are measured

featuring numerous improvements

Designed for high-performance applications

these valves are engineered to withstand the rigorous demands of performance use

Powerflex Handling Pack, BMW F48 / F49 X1 20-0974 The Pro-Xtreme Pistons are specificallyPowerflex Handling Packs contain bushings that have been specifically selected to give the perfect combination of value versus performance based on years of experience. Featuring carefully selected products from the Powerflex range to maximize the performance of the suspension, these kits also come at a cheaper rate than buying the parts individually. This can be an ideal upgrade complementing other suspension upgrades, such as shock absorbers and