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TC650C

STAR Racing Thrasher 650 Twin Cam Camshaft - .650 Lift

STAR Racing Thrasher 650 Twin Cam Camshaft - .650 Lift

$449.95 USD
$449.95 USD
Sale Sold out

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).

Key Features

  • 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


    Lift .650"
    IVC 40°, 240 x 260 duration  
    TDC Lift .189 x .189
    RPM Range 2,500 - 6,500 RPM


    Performance and Ride Feel

    • Excellent mid-range power and throttle response
    • Strong pull from 2200 RPM all the way to redline
    • Best For: Street &Touring performance


    Fitment and Install Notes

    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. 


      **Please note that we cannot ship cams to California. **

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