Overview
The Pro Comp 64151 is a 1 inch rear lift block and U-bolt kit from Pro Comp Suspension for leaf spring equipped vehicles. It includes cast iron blocks, U-bolts, flat washers and hi-nuts.
Tapering helps keep driveshaft angles where they belong on a leaf spring vehicle. No vehicle is named, so confirm fit for your year, model and trim before ordering.
Key features
- 1 inch rear lift per the product name
- Tapered cast iron lift blocks
- U-bolts, flat washers and hi-nuts included
Leaf spring lift considerations
Leaf spring suspensions rely on the spring pack’s arc and the position of the shackles to keep the axle located. A block lift shifts the axle down relative to the springs, which changes that geometry. Check the shackles, bushings and sway bar links for wear as part of any rear lift job, since they work harder at the new ride height.
Tapered blocks are designed to keep the driveshaft angle closer to its original path. Even so, the rest of the drivetrain should be inspected, including the U-joints and pinion angle, after the lift is complete. Keep the spring clamps tight and recheck them after the first trail runs.
- Shackle and bushing wear
- Sway bar link length
- U-joint condition and pinion angle
- Clamp tightness after the first trail runs
Specifications
| Brand | Pro Comp Suspension |
|---|---|
| Part number | 64151 |
| UPC | 614901022681 |
| Type | Rear lift block and U-bolt kit |
| Lift height | 1 in |
| Block material | Cast iron |
| Block shape | Tapered |
| Hardware | U-bolts, flat washers, hi-nuts |
Vehicle fitment
Check your rear axle and spring pack dimensions against your installation before ordering.
Confirm your vehicle’s year, model and trim before ordering.
What’s included
Piece quantities are not confirmed for each item, so count the contents against your installation before starting.






