Ohlin's latest generation spring series combines race-ready weights with big mountain strength. Cutting edge heat treatments and advanced materials enable us to stress our spring coils harder without damage, meaning we can build them stronger and lighter than before. All spring series come with as little as 4 Nm/23 lbs increments enabling you to find the perfect spring for your bike and riding style. If you need more than two turns of preload, we recommend switching to a stiffer spring in order to get the best performance. If you have any questions regarding this item please reach out to our educated customer service staff. 805-375-4525. Ohlins Coil Rear Shock Spring