Big Gun TFI Power Box for Polaris RZR 1000 S / XP / XP 4 - 40-R54O Piston Size_57.94mm Wiseco Pro-Lite forged 2-stroke pistons

Wiseco Pro-Lite forged 2-stroke pistons are the result of decades of experience

Zinc plated to resist corrosion and eliminate paint in threads

Some of the kits will now feature new diaphragm springs as used in many larger new bikes to provide a complete clutch rebuild kit for every sportbike possible

2007 Harley-Davidson Wide Glide EFI - FXDWGI

2000 Yamaha YFM400 Kodiak 2WD

Big Gun TFI Power Box for Polaris RZR 1000 S / XP / XP 4 - 40-R54O Piston Size_57.94mm Wiseco Pro-Lite forged 2-stroke pistonsBig Gun Exhaust TFI Power Box Increases horsepower and throttle response Installs in minutes Third generation technology No computer needed to adjust EFI Plug in technology (Does not interfere with stock ECU map) Integrated faceplate buttons provide easy adjustment Highly recommended for any EFI unit with aftermarket exhaust 1 Year Limited Warranty When installing an aftermarket exhaust, proper tuning is a must. The Big Gun Power Box is a plug and