FOX SLS Coil Rear Shock Spring - 500 lb. x 2.9" / 74mm Stroke Orange MFPN=138-500-200 The Shimano Ultegra FC-R8100 features

The Shimano Ultegra FC-R8100 features Hollowglide structure that cuts weight yet maintains strength for better power transfer and quicker more precise front shifting

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40 x 40 cm

Zipp’s ultimate aero weapon is faster than ever thanks to their proprietary Total System Efficiency technology

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FOX SLS Coil Rear Shock Spring - 500 lb. x 2.9" / 74mm Stroke Orange MFPN=138-500-200 The Shimano Ultegra FC-R8100 featuresConstructed from proprietary Fox super light steel (SLS) Unique surface treatment and stress relief process allows using a smaller wire diameter with fewer coils, all creating a lighter spring 1. 385 inch inside diameter fits Fox coil shocks, plus Marzocchi, DVO, MRP, X Fusion and more Fox vendor part number now printed on the spring for identification TECH SPECS model SLS material lightweight steel ID 35mm 1. 385" stroke 74mm 2. 9" rate (lbs) 500