The OKO Racing Reed valve block comes with carbon fibre reed petals, with a design similar to V-Force type reed valves. Extra reed petals are also available separately
The design of the OKO reed valve system features double the intake surface area over standard reed valves, giving Increased overall mid range, top end power. Greater efficiency and reduced reed petal wear due to reduced reed petal travel.
Yamaha RXZ135 RX135 YZ125 DT175
Also may fit:Yamaha RD RD250 RD350 RD400
Yamaha Banshee 350 YFZ350
Similar in performance to Malossi, Boyesen, Moto Tassinari Vforce 3/Vforce 4 reed valve systems