7/16 U Bolts (Pair) chevrolet-k5-blazer-1969 5" hole spacing on centers)

5" hole spacing on centers)

The centerbolt on the Colorado and Canyon is originally 5/16 and installing this spring will require modification to the centerbolt head or axle seat hole as it comes with a 3/8 centerbolt

but may be up to 3/4" longer

1992 - 2006 E-150 (rear eye of rear spring on)

7/16 U Bolts (Pair) chevrolet-k5-blazer-1969 5" hole spacing on centers)Custom U bolts made to your specifications. Product Description: This is a BRAND NEW set of Grade 5 hardened U bolts. These are the real thing, NOT the the low grade, under sized "universal" U bolts that you usually get with most lift kits and aftermarket bolt ons. We custom make all of our U bolts using the highest grade U bolt rods available, while specifically matching accurate and correct dimensions for every application. They use rolled threads