Flat Wire Helper Spring - 135mm Length | 65mm ID | 0.08kfg/mm Flat Track Motorcycle Usable Stroke : 42mm |

Usable Stroke : 42mm | 1

Browse more 4in | 60mm ID Metric Coilover Springs to find the right suspension setup for your build

Spring Rate : 75/150lbs/inch

Part Number: 120-500-225

Part Number: 950-500-575

Flat Wire Helper Spring - 135mm Length | 65mm ID | 0.08kfg/mm Flat Track Motorcycle Usable Stroke : 42mm |Explore the capabilities of keeping your springs mounted on the coilover perch when they're under negative or zero load with Swift Helper Springs, designed to have minimal effect on the springs rate of the main coilover springs. Prevent the dismount of your springs without having to change spring rates. Our Helper Springs are specifically designed to have a minimal effect on the spring's rate of retention on the coilover perch while the shock is under