BMP 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!
Small Keys: Fits Carburated Arctic Cat snowmobiles F6, F7, ZR800, ZR900, 440, 500, 600, 700 ZR's, ZRT 800, 900, 1000 triples
Large Keys: EFI Arctic Cat Models
Polaris Keys: Fit All CFI 2-stroke snowmobile motors
See the instructions HERE