Summit Racing SpeedCard - learn how to get 10% back up to $100

Summit Racing SpeedCard - learn how to get 10% back up to $100

$5 Off Your $100 Mobile App Purchase!

Selected Filters


Loading...

Availability


Suspension Lift Blocks & Leaf Spring U-Bolts

Whether you’re lifting or lowering your ride, suspension blocks are a great way to add a slick custom look to your leaf spring-equipped vehicle. If you want to add ride...

Whether you’re lifting or lowering your ride, suspension blocks are a great way to add a slick custom look to your leaf spring-equipped vehicle. If you want to add ride height, you can select from a range of suspension block sizes—including 2 inch, 3 inch, and 4 inch lift blocks (and beyond). Or, if you’re going for a pavement-scraping look, check out the range of lowering blocks in 1 inch, 2 inch, or 2.5 inch drops (or lower).

Some suspension blocks are sold individually, but you may want to consider picking up new leaf spring U-bolts too, if the kit doesn’t include them. This ensures that your U-bolts will be sized perfectly...

Whether you’re lifting or lowering your ride, suspension blocks are a great way to add a slick custom look to your leaf spring-equipped vehicle. If you want to add ride height, you can select from a range of suspension block sizes—including 2 inch, 3 inch, and 4 inch lift blocks (and beyond). Or, if you’re going for a pavement-scraping look, check out the range of lowering blocks in 1 inch, 2 inch, or 2.5 inch drops (or lower).

Some suspension blocks are sold individually, but you may want to consider picking up new leaf spring U-bolts too, if the kit doesn’t include them. This ensures that your U-bolts will be sized perfectly for your new suspension blocks, particularly if you’ve opted for a more aggressive suspension lift or drop, say, with something like a 6 inch lift block.

Suspension lift or lowering blocks work by adjusting how the rear axle rides on the leaf springs. For instance, in lowering applications, the suspension block often fits below the axle, but on top of the leaf spring. This pulls the axle up towards the body and chassis, resulting in a lower ride height. Conversely, the orientation is reversed for lift applications, moving the suspension blocks below the leaf springs, where they ride on top of the axle. This raises the chassis by moving the axle lower below the leaf spring.

Suspension lift or lowering blocks can be made from several materials, with aluminum, iron, and steel being the most common. As alluded to above, it’s possible that your stock U-bolts may still accommodate the addition of suspension blocks, but it makes sense to measure and make sure. Replacement leaf spring U-bolts are readily available, and a lot of the suspension block kits on this page include the U-bolts already.

Gearheads like suspension blocks because they’re an easy, straightforward way to raise or lower a leaf spring-equipped vehicle. If that sounds like you, check out all of your suspension block options here. While some suspension blocks are universal, many are application-specific, so you can ensure the proper fitment on the vehicle you’re raising or lowering. Make sense? Start shopping suspension blocks now, at Summit Racing.

Individual Parts

Results 1 - 25 of 202

05-23 Toyota Tacoma; 07-21 Tundra RSO Rear Lift Block and U-Bolt Kit 2in Lift

Part Number: RSU-150107424502

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

...Loading

Estimated Ship Date: Jan 21, 2026 if ordered today

Suspension Blocks, Block, U-Bolt, Nylon, Black, 2.0 in. Lift, Rear, Chevy, GMC, Kit

Part Number: ROU-6532

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 29, 2025 if ordered today

Lift Blocks and U-Bolt Kits, Cast Iron, 2 in. Lift, Rear, Chevy, GMC, Kit

Part Number: TFY-97008

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

...Loading

Estimated Ship Date: Jan 6, 2026 if ordered today

Suspension Blocks, Block, U-Bolt, Steel, Black, 2.0 in. Lift, Rear, Ford, Kit

Part Number: ROU-6582

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 29, 2025 if ordered today

Suspension Blocks, Block, U-Bolt, Nylon, Black, 2.5 in. Lift, Rear, Chevy, GMC, Kit

Part Number: ROU-6521

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 29, 2025 if ordered today

Lift Blocks and U-Bolt Kits, Cast Iron, 3 in. Blocks, 1.5 in Lift, Rear, Chevy, GMC, Kit

Part Number: TFY-97031

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 6, 2026 if ordered today

...Loading

Estimated Ship Date: Jan 6, 2026 if ordered today

Suspension Blocks, Block, U-Bolt, Steel, Black, 3.0 in. Lift, Rear, Ford, Kit

Part Number: ROU-6539

Not Yet Reviewed

Estimated Ship Date: Dec 23, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 23, 2025 if ordered today

Suspension Blocks, Block, U-Bolt, Nylon, Black, 1.5 in. Lift, Rear, Chevy, GMC, Kit

Part Number: ROU-6573

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 29, 2025 if ordered today

Suspension Blocks, Block, U-Bolt, Steel, Black, 3.0 in. Lift, Rear, Ford, Kit

Part Number: ROU-6546

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 29, 2025 if ordered today

Lift Blocks and U-Bolt Kits, Cast Iron, 4 in. Blocks, 2.5 in Lift, Rear, Chevy, GMC, Kit

Part Number: TFY-97032

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

...Loading

Estimated Ship Date: Jan 5, 2026 if ordered today

Suspension Blocks, Block, U-Bolt, Nylon, Black, 2.0 in. Lift, Rear, Toyota, Kit

Part Number: ROU-6549

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 29, 2025 if ordered today

Suspension Blocks, Block, U-Bolt, Nylon, Black, 1.5 in. Lift, Rear, Chevy, GMC, Kit

Part Number: ROU-6551

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 29, 2025 if ordered today

Lift Blocks and U-Bolt Kits, Cast Iron, 3 in. Lift, Rear, Chevy, GMC, Kit

Part Number: TFY-97023

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

...Loading

Estimated Ship Date: Jan 6, 2026 if ordered today

Suspension Block; Axle Lift Blocks Kit; 4 in. H x 2.5 in. W x 4.75 in. L; Tapered; Incl. U-Bolts

Part Number: TFY-97080

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

...Loading

Estimated Ship Date: Jan 6, 2026 if ordered today

Suspension Blocks, Block, U-Bolt, Steel, Black, 3.0 in. Lift, Rear, Ford, Kit

Part Number: ROU-6552

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 29, 2025 if ordered today

Suspension Blocks, Block, U-Bolt, Steel, Black, 2.0 in. Lift, Rear, Ford, Kit

Part Number: ROU-6557

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 29, 2025 if ordered today

Suspension Blocks, Block, U-Bolt, Nylon, Black, 1.0 in. Lift, Rear, Ford, Kit

Part Number: ROU-6581

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 29, 2025 if ordered today

Suspension Blocks, Block, U-Bolt, Steel, Black, 3.0 in. Lift, Rear, Ford, Kit

Part Number: ROU-6542

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 29, 2025 if ordered today

Lowering Blocks, Rear Axle Position, Aluminum, 2.00 in. Thick, U-bolts, Rear Coil Spring, Chevy, GMC, Kit

Part Number: CLP-CP4-2

4.9 out of 5 stars ( 21 )

Estimated Ship Date: Monday 12/15/2025

...Loading

Estimated Ship Date: Monday 12/15/2025

Suspension Blocks, Lowering Blocks, 2.00 in. Thickness, Aluminum, U-bolts, Rear Axle Position, Chevrolet, GMC, Kit

Part Number: MMC-33123

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/15/2025

...Loading

Estimated Ship Date: Monday 12/15/2025

Leaf Spring Blocks, Rear-End Lowering, Aluminum, 1.00 in. Block Thickness, U-bolts, Ford, Kit

Part Number: SDK-C5ZZ5705LK1

3.86 out of 5 stars ( 14 )

Estimated Ship Date: Monday 12/15/2025

...Loading

Estimated Ship Date: Monday 12/15/2025

Lowering Blocks/U-Bolts, Aluminum, 1 in. Lowering, For 2.5/3.0 in. Wide Leaf Springs, Rear, Universal, Kit

Part Number: BEL-6002

4.5 out of 5 stars ( 14 )

Estimated Ship Date: Monday 12/15/2025

...Loading

Estimated Ship Date: Monday 12/15/2025

Lowering Blocks, U-Bolts, Aluminum, 4 in., Rear, Chevy, GMC, Isuzu, Mitsubishi, for Nissan, Toyota, Kit

Part Number: BEL-6203

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/15/2025

...Loading

Estimated Ship Date: Monday 12/15/2025

Lowering Blocks, U-Bolts, Aluminum, 3 in., Rear, Chevy, GMC, Isuzu, Mitsubishi, for Nissan, Toyota, Kit

Part Number: BEL-6202

4.46 out of 5 stars ( 13 )

Estimated Ship Date: Monday 12/15/2025

...Loading

Estimated Ship Date: Monday 12/15/2025

Lowering Blocks/U-Bolts, Aluminum, 2 in. Drop, Rear, Chevy, GMC/Isuzu, Pickup/SUV, Kit

Part Number: BEL-6100

4.25 out of 5 stars ( 12 )

Estimated Ship Date: Monday 12/15/2025

...Loading

Estimated Ship Date: Monday 12/15/2025

Modal Header

Call To Order

This is a custom order part. You can order this part by Contacting Us.