Fits 06-17 Big Twin models
Gear drive

570 Series Cams are for 88"/96"/103 cubic-inch engines with compression ratios of between 9:1 and 10:1. Strongest from 3200-3700 RPM. 99-04 models require high-lift springs.

Camshaft gear drive kits increase valve timing accuracy in Twin Cam engines by eliminating timing chain lash and loosely fit stock chain drive

Reverses the rear cam's direction of rotation, providing additional operating clearance between cam lobes; as a result, higher cam lifts are possible with the gear drive kit

Strongest from 3200-3700 rpm

GRIND - 570 SERIES
INTAKE LIFT AT TDC - 0.187"
INTAKE OPEN - 20°
INTAKE LOBE CENTERLINE - 100°
INTAKE LIFT - 0.570"
INTAKE DURATION - 240°
EXHAUST LIFT - 0.570"
EXHAUST DURATION - 255°
EXHAUST LIFT AT TDC - 0.179"
EXHAUST OPEN - 55°
EXHAUST LOBE CENTERLINE - 107.5°