ALPINESTARS SP-X BOA Boots - Black/Silver - EU 42 2222024-119-42 Replacement Clutch Spring Set Springs are measured from hook

Springs are measured from hook to hook

1" inside diameter fits most 1" handlebars

Self-locking design for fast and secure installation

Maximum protection for chassis and engine

Insulator is made of 95% pure alumina

ALPINESTARS SP-X BOA Boots - Black/Silver - EU 42 2222024-119-42 Replacement Clutch Spring Set Springs are measured from hookSP X boots are a sleek sport boot designed to fit under tech riding pants and provide superior walking capability Optimized for the sport and sport touring rider, the SP X are compact, mid height boots with premium levels of protection and comfort on and off the bike The upper is constructed from a combination of Rideknit material and knitted mesh, plus seamless thermo welded parts The lower features a TPU heel counter, toe slider, and the Alpinestars