Moose fork springs use the highest-grade chrome silicone wire Each spring is cold coiled then heat treated Springs are pre-set and ground to length before being polished for the ultimate performance All springs have their rate laser etched on the end and are manufactured to DIN2095 grade 1 standards All springs go through the following stages: cold-coiled, heat-treated, tempered, shot-peened, ground ends, polished for reduced friction and smoother performance, part number etched in end of spring. FF SPRING SET 43.5MM 4.6