Star Thrasher 650 Twin Cam Camshaft — .650 Lift

The most aggressive cam in the Star Twin Cam lineup — built for high-performance street riding and track days.

Part Description

The Star Thrasher 650 is the top of the Star Twin Cam camshaft range — a high-performance, high-lift cam engineered for riders who demand more from their 2007-and-up chain-drive Twin Cam engine on the street and on the track. With .650" lift and a TDC lift of .189 x .189, the Thrasher pushes well beyond the territory of bolt-on performance and into serious build territory. Aftermarket pistons and springs are required, and piston-to-valve clearance must be verified by an experienced builder before startup. Done right, the Thrasher delivers the kind of aggressive, high-output performance that serious Twin Cam builds are built around. Recommended install with Star .655 Lift Spring Kit (TC20-20350).

**Please note that we cannot ship cams to California. California customers please contact Moto Performance Garage of Las Vegas.**

Star Thrasher 650 Twin Cam Camshaft - .650 Lift

Name: Star Thrasher 650 Twin Cam Camshaft - .650 Lift
Brand: Star Racing
SKU: TC650C

SKU: TC650C

$449.95

Quantity

Most powerful cam in the Star Twin Cam lineup — engineered for maximum performance

.650 lift — highest lift available in the Star Twin Cam range

.189 TDC lift — aggressive lobe profile for peak airflow and power output

Compatible with any Twin Cam displacement — scales across all build sizes

Designed for high-performance touring and occasional track use — built for riders who want both

Chain-drive design — fits 2007-and-up Twin Cam engines
Excellent mid-range power and throttle response

Strong pull from 2200 RPM all the way to redline

Best For: Street &Touring performance
Engine Years Valve Springs Lifter Guides

Twin Cam 103 - 117 engines
2007+ TC20-20350 recommended Stock

Push Rods and Lifters can be stock.

Exhaust pairing matters: Star Cams will perform with all pipe configurations, but exhaust selection has a meaningful impact on results. Short exhaust systems create sound wave differentials that negatively affect low-RPM tune quality — a condition that cannot be fully corrected through tuning alone. For the smoothest low-end torque curve, a long 2-into-1 exhaust is strongly recommended. Trusted options include D&D, Fuel Moto, Bassani, ThunderHeader, and Krome Werks.

Piston-to-valve clearance must be verified by an experienced builder prior to startup — this is a critical pre-installation step, not optional. Experienced installer strongly recommended — this is not a standard bolt-on installation. Professional tuning required for best results.