Replacement for OEM 41400-57

1 1/2" 8 mm Bolt-In Belt Drive Kits for 4-Speed Models 39 Tooth Front/62 Tooth Rear

note: See 544841 for the foam filter element used for the air scoop on Pro and Pro-R air cleaners

which enabled Cobra to engineer and use high frequency sound chattering technique in the high-flow core to enhance the lower mellow tones

S&S Forged Piston Kit oversize .050" 1936-79 Elstart upp till 1990 Replacement for OEM 41400-57Forged piston set. For 41 78 1200cc (74") Knuckle, Panhead, Shovel and 1340cc Shovel. Fits engines with stroker flywheels and stock 3 7 16" (1200cc) or 3 1 2" (1340cc) cylinders with stock 5. 330" length. Compression will be approx 8. 4: 1 with 4 1 2" stroke, 9. 4: 1 with 4 5 8 stroke and 10. 8 with 4 3 4" stroke. Piston dome volume 50cc. The advanced alloy and piston skirt profile for low noise and long engine life. Pistons include wrist pins, wrist