Sinister High Performance Camshafts

SINISTER High‑Lift Camshafts
FOR BIG‑BORE & STROKER VRSC ENGINES (1350cc+)
If you’re running a big bore or stroker motor above 1350cc, and you answered YES, then these are the cams built for you. We designed the SINISTER camshafts specifically for high‑performance Revolution engines that demand more lift, more airflow, and more top‑end power than any drop‑in cam can deliver.

Fitment
2002–2017 VRSC / V‑ROD models
Spring Requirements
These cams require valve springs capable of handling .500 lift.
Stock springs will NOT work.
Total Valve Lift (After Lash)
•     Intake: .497
•     Exhaust: .468
 
Dyno‑Proven Gains on a 1402cc Engine
We performed a direct before‑and‑after test on a 1402cc build to compare the SINISTER cams against our closest competitor. The results speak for themselves.
•     Before: 157.8 HP / 105.20 TQ
•     After: 165.6 HP / 108.55 TQ
That’s a significant increase in both horsepower and torque, with more testing on additional engine sizes coming soon.
 
Built for Serious Power
The SINISTER cams are engineered for riders who want every last bit of performance from their big‑inch VRod. Higher lift, aggressive profiles, and airflow characteristics tailored for large‑displacement Revolution engines.
If you want the camshaft that pulls harder, breathes better, and outperforms the competition, this is it.