RockShox Steel Coil Spring (S) 2.50/2.75" x 650# Black Weight-92 This follows the same profile

This follows the same profile as the original B-RAD Roll-Top Bag

To get a feel for optimal tension

5mm thick and 40mm wide

thanks to the Tri-Layer insulation and radiant heat reflective technology

Then follow the pros  and choose the One Way Premio 40

RockShox Steel Coil Spring (S) 2.50/2.75" x 650# Black Weight-92 This follows the same profileDesigned for RockShox Vivid and Kage rear frame shocks (running change from black to gray color on select sizes rates) A steel notched spring retainer collar should be used on all spring rates 550 lbs or greater. Alloy can be used on spring rates 500 lbs and lower For Drop Stop bottom out bumpers and spring collars, see rear shock service parts TECH SPECS stroke 63 70mm 2. 50 2. 75" rate (lbs) 650