Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-213	Rear	2,500lbs	5/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-419	Rear	3,390lbs	7

*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.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1321	Rear	575lbs	1

This is a helper spring for the stock 4 leaf spring.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-433	Rear	1,050lbs	1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-499	Rear	3,390lbs	8

*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.