Super Clutch Center Spring 10% Up / Super JOG-ZR

【DAYTONA 74051 Super Clutch Center Spring 10% up/Super JOG-ZR DAYTONA 74051】
Made from high-quality silicone chromium steel oil-tempered wire for valve springs (JIS SWOSC-V) and shot-peened to improve metal fatigue strength.
This ensures stable performance even during prolonged use at high temperatures, as it is less prone to heat-induced sagging. A reliable product made in Japan.
Please select the product with the optimal spring rate after thoroughly understanding your vehicle's engine horsepower and peak power RPM.
Guide for selecting a center spring (for 50cc scooters)
Installing a product with 10% UP or more on a normal 50cc engine may result in poor acceleration.
Please adjust the total weight of the weight rollers (re-setting) to achieve a better feeling.
Normal engine + normal muffler: STD-3% UP
Normal engine + aftermarket chamber: 3% UP-10% UP
Aftermarket big bore + normal muffler: 3% UP-20% UP
Aftermarket big bore + aftermarket chamber: 10% UP-20% UP
≪Compatible models≫
Remote control JOG/ZR ('01-'03 early) *5PT1/2, 5SW1 F.No. up to ~409999.
Not compatible with SA16J-0410101 and later.
Super JOG ZR ('95-'00)
JOG ('01-'03) 〈5KN1-6〉〈5SU1-2〉
JOG Aprio II (~'98) 〈4LV2-4〉
JOG ZII ('98) 〈5EM1〉, 7.2PS JOG Space Innovation 〈5EM2/SA04J〉
Met-in JOG ('88-'99) 〈3KJ〉/Sports ('89-'93) 〈3RY1, 2〉
5.3-6PS JOG ('86-'88) 〈2EX/2JA/2TE/2TA〉
Vino ('03) 〈5AUM/N〉
*The image is for illustration purposes only, and the design and specifications of the products shown may change without prior notice. Thank you for your understanding.