This is an inclined reed valve spacer for Minarelli horizontal 50cc moped engine, tilted 16 degrees towards the cylinder.
Essential for big bore cylinders (70+ ccs), allows a bigger volume in the crankcase, while orienting the reed valve straight towards the transfers. In doing so, it substantially increases the fresh mix flow to the engine, allowing it to express the best performance possible.
Warning: the extreme tilt angle of this spacer will require crankcase and/or reed valve modifications.
This mod is only intended for high-end engines, producing more than 25 HP at the crankshaft, as the Stage6 95cc R/T, Polini Big Evo 94cc, Malossi MHR Big Bore and so on. NOT recommended for first-stage tuning!
3DOMINION IS AN ITALIAN QUALITY WORKSHOP, ONLY USING HIGH PERFORMANCE TECHNOPOLYMERS. OUR MATERIALS CAN WITHSTAND UV LIGHT, GASOLINE, DIESEL FUEL, OIL, SOLVENTS, SEALANTS, AND CONTINUOUS WORKING TEMPERATURE OF 100 °C. WEIGHS LESS THAN HALF THAN ALUMINUM!
The internal dimensions allow for oversized valves mounting (Malossi VL14, Polini Big Valve, etc.). Colors may vary.
We can build risers and spacers in many sizes, shapes and colors! Contact us to find out more!