Chevy GMC - C/K/R 10/15/20/25/K5 Blazer/Jimmy - Leaf Spring (Rear, 7 Leaves) gmc-k1500-4wd-1994 The centerbolt on the Colorado

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

The only way we've determined to tell the difference is measuring the pack thickness

Fits 3" Wide Springs with Rubber Bushings

NOT the the low grade

Some GMT800 trucks have frames with off-set mounting holes for the rear spring hanger

Chevy GMC - C/K/R 10/15/20/25/K5 Blazer/Jimmy - Leaf Spring (Rear, 7 Leaves) gmc-k1500-4wd-1994 The centerbolt on the Colorado*The 22 485 is a lower arch spring than the 22 489. For a higher arched spring you can view the 22 489 by clicking HERE*This spring was not originally offered and is an upgrade for the Colorado and Canyon. 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.