Star Racing Camshafts for Harley-Davidson Twin Cam Engines
Designed by drag racing legend George Bryce, Star Racing camshafts bring championship-proven performance to your Twin Cam engine (2007-2017 models with chain-drive cam system). These precision-ground cams deliver massive gains in horsepower and torque, improved throttle response, and an aggressive Harley rumble—perfect for street, touring, or performance builds. Engineered for reliability and maximum usable power.
Torkstar 577 Cam (.577" Lift)
The premier bolt-in cam for stock or Stage 1 Twin Cam engines (96ci, 103ci, 110ci). Focuses on strong torque delivery with excellent street manners.
- Power Band: 2000–5000 RPM
- Key Features: Bolt-in design compatible with stock valve springs; superior mid-range powerband; provides significant increases in horsepower and torque (e.g., up to 97 HP / 112 lb-ft in tuned 103ci setups).
- Best For: Riders wanting reliable, everyday performance upgrades with big low-to-mid torque gains. Ideal for touring or daily street use without major supporting mods.
Thrasher 650 Cam (.650" Lift)
High-performance grind for modified or big-inch builds, offering the widest usable powerband for aggressive riding.
- Power Band: Early to late RPM (broad power delivery)
- Key Features: High lift for maximum airflow; designed for high-performance touring with occasional track use; requires high-performance valve springs and supporting modifications.
- Best For: 107ci–113ci+ engines in high-output street or performance machines. Delivers explosive power across the RPM range—great for hard acceleration and extended pulls.
All Star Racing cams are proudly made in the USA and backed by decades of NHRA championship-winning expertise. Pair with supporting mods (exhaust, air cleaner, tuning) for optimal results. Professional installation recommended, especially for the Thrasher 650. Elevate your Twin Cam to championship levels with Star Racing!
