JFC 7317/10, Premium Tuning 6000 High-RPM Clutch Spring (Zenoah / CY Engines) 1st.
JFC premium Tuning high-RPM clutch spring for Zenoah and Chung Yang engines with 54mm clutch.
Designed for RC use.
This upgraded spring, custom-made of top-quality materials in the USA, offers unparalleled reliability and performance.
Stock spring engages at approx 6000 RPM; this spring is 20% stiffer for clutch engagement around 7500 RPM.
Improve your off-the-line power with a higher engagement RPM!