4-stroke power valve system
- 4-stroke power valve system
A 4-stroke powervalve is a device fitted to 4 stroke engines that constantly adjusts the internal diameter of the exhaust system to perfectly suit engine revolutions.
This ensures superior low to mid-range performance (ca. 12-20% improvement), linear power output and reduced exhaust noise levels while the valve is in its reduced opening position.
*Yamaha EXUP (Exhaust Ultimate Power valve)
*Honda HTEV (Honda Titanium Exhaust Valve)
*Suzuki SET (Suzuki Exhaust Tuning)
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