Cane Creek Metric Progressive Valt Lightweight Shock SpringsCANE CREEK METRIC PROGRESSIVE VALT LIGHTWEIGHT SHOCK SPRINGS Theres no excuse now coil performance for the masses! Progressive Rate VALT lightweight coil springs are now available from Cane Creek Cycling Components. Designed and tuned by Cane Creeks engineering team to provide riders with a true rise in rate spring curve. The Progressive Rate VALT springs maintain the sensitivity and set it and forget it mentality of a traditional coil set up, but