Valve Retainer + Keys Set (4.5mm) - Honda CBR150R/CB125R/ Winner/Sonic/GTR150/RS150

Durable, precision-fit retainers and keys designed to secure valve springs under high RPM. Made from high-strength materials for reliable performance, improved valve stability, and long-lasting engine durability. Ideal for stock or upgraded cylinder heads.

* Stock Retainer Thickness

Fitting:

Honda CBR150R (K45G)/CB150R (2016)

Honda CB125R (2021)

Honda RS150R/Winner/Supra/GTR150/Sonic (2016)