Overview
The Pro Comp 4 Inch Rear Lift Block with U-Bolt Kit (part number 62242) is a rear lift kit for leaf spring equipped vehicles. It gives the rear a 4-inch lift, and Pro Comp says its tapered lift blocks help improve and retain driveshaft angles.
The kit is for owners who want rear height on a leaf spring suspension without giving up driveline geometry. A U-bolt kit comes with the blocks, so the mounting hardware is part of the same purchase.
Key features
- Tapered lift blocks for rear lift on leaf spring suspensions
- 4-inch lift height
- Tapered blocks help improve and retain driveshaft angles.
- U-bolt kit included under one part number, 62242
Driveline and pinion angles
A rear block lift changes the pinion angle at the axle, and that change is what the tapered design is meant to manage. Driveline angle is the relationship between the transmission output, the driveshaft and the pinion, and when it drifts too far, vibration and joint wear follow. A lift of this height deserves a measured check rather than an assumption.
Measuring the pinion angle with a level after installation shows whether the driveline sits within a workable range. If the reading is off, options include a pinion correction, a driveshaft with a different joint angle, or a change in block height. Recheck the angle after the first off-road trip, since settling hardware can shift the setting.
Joint wear shows up as vibration at speed, clunks when shifting, or a shudder under acceleration. Catching these early keeps the driveline in service longer.
- Measure pinion angle with a level after installation
- Watch for vibration at highway speed
- Listen for clunks when shifting
- Recheck angles after the first off-road trip
Specifications
| Brand | Pro Comp Suspension |
|---|---|
| Part number | 62242 |
| UPC | 614901022698 |
| Lift height | 4 inches, rear |
| Suspension type | Leaf spring |
| Included | Lift blocks and U-bolt kit |
Vehicle fitment
It is a direct fit kit for leaf spring equipped vehicles. Confirm your vehicle’s year, model and trim before ordering, and check the rear spring setup against your installation.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Lift blocks change the pinion angle at the rear axle, so check driveline angles after the kit is installed.
What’s included
The 4-inch rear lift blocks and the U-bolt kit, sold as part number 62242.
