The BOYESEN high-performance membrane made from DURA-FLEX fiber material with a dual-phase system. Two membrane blades work together to enhance riding comfort and reliability, improve control, and increase performance, especially in the lower range. It provides better throttle response and has been proven thousands of times. Designed specifically for Kawasaki engines, this membrane offers an optimized balance of stiffness and flexibility, ensuring superior durability and performance under extreme conditions. Easy to install, it fits seamlessly with OEM components and delivers a notable upgrade in power delivery and efficiency. Riders can expect a noticeable improvement in engine response and consistency, making it an ideal choice for both professional and recreational riders who demand the best from their machines.