The Honda Grom hydraulic chain tensioner is a weak point and must be replaced for high revving engines! The Decha Performance manual tensioner is an OEM replacement that provides consistent tension...
DHM High RPM valve springs can handle 12k+ RPM with any camshaft available and have been designed to not need an inner spring in order to keep valvetrain weight low....
The Decha Performance intake tube replaces the hose that connects your stock airbox to the throttle body. By increasing the internal diameter throughout, you can now have a stock airbox...
