Replacement intake reed/diaphragm valve for YAMAHA DT125 / RS125 / DT 125 (125cc two-stroke) Key benefits Restores engine breathing: replaces worn or damaged intake membrane to recover correct intake flow and engine efficiency. Better throttle response and power delivery: improved reed/diaphragm design increases responsiveness and gas acceptance compared with a worn or standard unit. Long service life: manufactured with quality workmanship and wear- and corrosion-resistant materials for reliable, long-lasting performance. Designed for fit and function: sized for 125cc two-stroke YAMAHA DT125 / RS125 / DT 125 applications and works with the stock intake manifold to improve intake capacity. Features and specifications Compatibility: YAMAHA DT125, RS125, DT 125 — 125cc two-stroke motorcycle intake application. Function: reed/diaphragm valve that controls air/fuel entry to the engine, improving throttle response and overall engine performance. Construction: precision-made with emphasis on durability, wear resistance and corrosion protection to extend service life. Performance: faster valve response and optimized intake flow for improved engine feel and better acceleration. Practical use scenarios Routine maintenance: replace an old, cracked or deformed membrane to restore correct engine idling, throttle response and fuel efficiency. Performance refresh: upgrade a fatigued or damaged stock valve to regain sharper throttle response for spirited street riding or weekend trips. Track or off-road preparation: install before a track day or off-road session to ensure reliable intake performance and consistent engine response under load. Notes Confirm fitment with your model and year before installation. Sold as the intake membrane/reed valve compatible with listed YAMAHA models; professional installation recommended if you are not experienced with two-stroke intake components.