Crower 74136F Features:

Crower 74136F shaft rocker set for Brodix 12X12RP cylinder heads with heavy-duty 5/8 in. shafts Engineered for SBC applications with 1.650 pivot length, .550 fulcrum height, and .250 backset CNC-machined from ball race alloy steels, double heat-treated, and micro-finish ground in-house Fully rollerized needle bearing fulcrum and secure axles help maintain valve control at extreme RPM

Shaft Rockers Brodix 12X1 5/8 In. Shafts For Brodix Features:

• CNC-machined ball-race alloy steel rockers with 5/8 in. shafts for Brodix 12X12RP heads and SBC valvetrain stability
• Double heat-treated, micro-finish-ground construction for high-rpm strength, consistent geometry, and long-term race durability
• Fully rollerized needle-bearing fulcrum and secured axles for reduced friction, freer horsepower, and precise valve control
• Optimized with 1.650 pivot length, .550 fulcrum height, and .250 backset for correct shaft-rocker fitment and motion
• Includes shaft-height gauge set for 0.750 in. valve lift; other lift ranges require shaft-height adjustment during setup