STARTING LINE PRODUCTS Cylinder Head - 0-6000 Feet Altitude - 4.2 hp Peak - 800 AXYS Models Polaris 12-407

Cylinder Head - 0-6000 Feet Altitude - 4.2 hp Peak - 800 AXYS Models Polaris
Billet aluminum construction, Dramatically increased combustion efficiency, Radical combustion chamber design provides more horsepower with less chance of detonation, For low altitude operation with stock or modified engines