This mountain bike (MTB) rear shock spring features a hard-wearing steel construction, which makes it durable and reliable as you conquer every trail-riding adventure. All standard steel springs are black and are marked with their spring rate in lbs/in (in 50lb increments) and the total travel of the spring itself. Standard black springs should only be paired with shocks having less travel than the travel marked on the spring itself.
Manufacturer's Part Numbers:
039-09-001 Black 350lb 1.390x6.689"
039-09-002 Black 400lb 1.3850x6.634"
039-09-003 Black 450lb 1.3850x6.760"
039-09-004 Black 500lb 1.3850x6.300"
039-09-005 Black 550lb 1.3850x6.700"
039-09-006 Black 600lb 1.3850x6.880"