anything over 140hp we recommend a head stud install

two wristpins

06-13-116   ZR/XF 7000

Needed when adding a big bore or turbo

Offset Timing Keys Category_Default Category/SLED/Polaris/IQ 700 anything over 140hp we recommendBMP Offset Timing Keys are offset to advance timing by slightly rotating the flywheel in various degrees. Advance your timing for more horsepower. On average it's 1 2 HP per degree. Premium gas required in most cases. 4 5 degree typically require race fuel. Easy bolt on performance! BMP Advanced Timing Keys Read full description below before purchasing Small 1. 3 Degree PN: BMP TK1 Small 4 Degree PN: BMP TK3 Large 1. 25 Degree PN: BMP TK4 Large 2. 5