S&S CYCLE Forged Standard Rocker Arm 900-4119FA Tires Compression ratios below 10:1

Compression ratios below 10:1

Fuel-injected motors will require recalibration of the fuel-injection system

and mild performance upgrades

wet and dry

Built-in stinger cone directs air smoothly into the bore of the carburetor or EFI throttle body and reduces turbulence and increases flow

S&S CYCLE Forged Standard Rocker Arm 900-4119FA Tires Compression ratios below 10:1Forged Standard Rocker Arm An economical solution for stock rebuilds, and mild performance upgrades, Forged from 8620 steel for greater strength than stock or cast steel, Feature the same . 750" long rocker shaft bushings as S&S Roller Rockers: longer bushing provides 50% more load bearing area; eliminates the risk of engine damage associated with failed needle bearings, Valve contact tips are induction hardened for extended durability, Recommended