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APPLICATION: HONDA CRF 450 R 11-12

PROFILE CHARACTERISTICS:

PERFORMANCE PROFILE for MOTOCROSS applications.

This profile is designed to increase mid and upper end: the higher lift and the duration combination of this profile, increase power, torque and provide smooth output delivery.

Requires Exhaust System, High Compression Piston, and Performance Valve Spring Kit. Check ALL clearances!

Web Cams item code: 57-972

Profile: 961 / 812

INTAKE EXHAUST

Valve Lash (Inch): .006" .009"- .0011”

Valve Lift (Inch): 0.400 0.331

Valve Lift (mm): 10.16 8.41

Advertised Duration: 282° 279°

Duration @ 0.050": 258° 243°

Lobe Center: 108° 108.5° Overall 108.25°

OPENING: 20° before TDC 50° before TDC

CLOSING: 56° after TDC 13° after TDC