FOX Steel Rear Shock Coil Spring - 550 lb. x 2.35" Spring Travel 4.776 TLG Total Spring Length BLK FOX 4 Top tube length 525

4 Top tube length 525 535 545 555 Head tube length 90 110 140 160 Head tube angle 70

USB rechargeable in 2

More than an aero extension this is an integrated shifting system for the modern triathlon/TT bike

Does not require eyelets for mounting

FOX Steel Rear Shock Coil Spring - 550 lb. x 2.35" Spring Travel 4.776 TLG Total Spring Length BLK FOX 4 Top tube length 525Standard Steel Springs in a wide variety of spring weights and travel. The 35 mm 1. 385" Internal diameter also fits DVO MRP and X Fusion shocks. Ultra durable black powder coat finish provides protection and keeps the spring looking good Stroke (ins) 2. 00 2. 25 Material Steel I. D. (mm) 35. 200000000000003 Spring Weight 550