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One of the unsung heroes of any leaf spring suspension upgrade, the humble leaf spring U-bolt has a very important job. The U-bolt keeps the leaf spring secure to the...
One of the unsung heroes of any leaf spring suspension upgrade, the humble leaf spring U-bolt has a very important job. The U-bolt keeps the leaf spring secure to the axle, ensuring proper axle position and maintaining the right suspension geometry and driveline angles.
Yet it’s easy to overlook the need for replacing or upgrading the leaf spring U-bolts in your suspension system. Unless of course, you’re running a modified suspension or non-stock front or rear axle. In those cases, you may need longer or wider leaf spring U-bolts to fit. For instance, adding lift blocks or lowering blocks to your axle could demand 4-inch,...
One of the unsung heroes of any leaf spring suspension upgrade, the humble leaf spring U-bolt has a very important job. The U-bolt keeps the leaf spring secure to the axle, ensuring proper axle position and maintaining the right suspension geometry and driveline angles.
Yet it’s easy to overlook the need for replacing or upgrading the leaf spring U-bolts in your suspension system. Unless of course, you’re running a modified suspension or non-stock front or rear axle. In those cases, you may need longer or wider leaf spring U-bolts to fit. For instance, adding lift blocks or lowering blocks to your axle could demand 4-inch, 8-inch or even longer leaf spring U-bolts. That’s because the U-bolt will have to compensate for the block, demanding extra length on the leaf spring U-bolt, so you still have enough thread length to secure the U-bolt nuts.
But even if you’re not adding lowering or lift blocks, running an aftermarket spring pack may require longer leaf spring U-bolts too, particularly if the spring pack features additional leaf or helper springs. Additional springs can increase the overall width of the spring pack, meaning that you may be unable to reuse the stock leaf spring U-bolts. So, if you’re upgrading leaf springs, take some measurements to determine if you’ll need new leaf spring U-bolts and, if so, how much longer those U-bolts need to be to complete your leaf spring installation.
If you’re simply swapping out stock parts for new ones, replacing your original leaf spring U-bolts may not be a bad idea either. Given their position on the vehicle, the threads on the end of your front or rear axle U-bolts are often exposed to the worst of what the road has to offer. Mud, salt, large rocks—there are plenty of road hazards that can severely damage your leaf spring U-bolt threads, or bend and distort the ends of the U-bolts entirely. Even up top where they wrap around the axle, your leaf spring U-bolts may be worn, corroded, or otherwise degraded to the point where you’ll need to replace them.
Standard or long, front or rear axle, whatever leaf spring U-bolts you need for your ride, you’ll find them right here, at Summit Racing.
Showing In Stock Items. Show All 42 Items.
Calvert Racing U-bolts are made of Grade 5 material in a choice of lengths and axle tube diameters. The bolts are zinc plated and packaged with washers and nuts. Keep you setup together with Calvert U-bolts.
( 95 )
$35.00
Over time, U-bolts can become rust-encrusted or bent out of shape, causing vehicle leaf springs to loosen or your exhaust pipe to rattle. Summit Racing™ Grade 8 leaf spring U-bolts are just what you need to replace the worn or damaged originals. These "U" shaped bolts feature two threaded arms and come with Grade 8 nuts and washers to connect the axle of your vehicle to the leaf spring pack within the suspension system. The bolts are available in multiple lengths.
( 50 )
$8.99
Superlift Suspension Systems offers high-strength U-bolt kits for dozens of applications from the 1960s through the 1990s. These replacements will work with either a stock or aftermarket leaf spring pack. They're available in a variety of styles, lengths, widths, and diameters. Choose the kit best suited for your needs.
( 191 )
$39.99
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$89.99
Dorman universal threaded U-bolt kits are available in square and round styles in a selection of lengths and widths for many applications. These steel U-bolts are zinc plated for added corrosion protection. Do you need suspension bolts? Dorman universal threaded U-bolt kits offer quality and performance, as well as value. Order them individually or in pairs.
( 40 )
$7.99
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$28.99
Classic Performance offers stock U-bolts for leaf spring suspensions on a variety of trucks, including 1960s and '70s era Chevrolet and GMC models. The steel replacement bolts are machined to factory specifications for strength, proper fit, and long-lasting performance.
Not Yet Reviewed
$58.99
OER rear leaf spring U-bolts are necessary components when changing from a mono-leaf to a multi-leaf setup. These U-bolts are offered in the OE width for original leaf springs, and in a replacement style for reproduction leaf spring plates.
( 22 )
$24.99
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$25.79
Scott Drake axle U-bolts replace your aging hardware with the proper fit, form, and function. Exact copies of the originals, they are not generic economy U-bolts. They have the correct swedging to provide a flat mounting surface against the axle housing and concours flanged mounting lock nuts are included for a factory appearance and safe installation. Scott Drake axle U-bolts are available in standard and a long style that is a 1/2 in. longer to accommodate applications using both 5 leaf springs and Traction Masters or other traction bars together. Set your suspension anyway you like with Drake Automotive U-bolts.
( 30 )
$13.03
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$14.23
Dorman U-bolt repair kits are designed to securely hold the leaf spring or leaf spring bundle to the underside of an axle of a vehicle or trailer. The components in these leaf spring axle kits are engineered from quality materials to provide reliable performance and long service life. Be sure to check the leaf spring dimensions and other relevant application details to select the correct type and size U-bolt repair kit for your application needs.
( 3 )
$22.99
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$40.99
Crown Automotive U-bolts for your shackles and leaf springs are available with washers and nuts for complete replacement, or just the U-bolts and you can reuse your stock hardware. Replace your vehicle's broken or missing U-bolts with heavy-duty parts from Crown.
( 8 )
$4.99
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$12.99
Old Man Emu leaf spring U-bolts will keep your suspension together. OME offers a choice of styles and several diameters, lengths, and widths to complete your leaf spring install. They are made from quality steel, feature a black finish, and include washer and nut. Old Man Emu wants you to experience the optimum ride performance of their leaf springs. That's why they also include in their suspension line the smaller, yet important, items to install your set-up, like these U-bolts.
( 3 )
$16.95
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$38.95
Replace your old or broken U-bolts with these high-strength AFCO Racing replacement U-bolt kits. These kits will work with a stock or an aftermarket leaf spring pack.
( 23 )
$10.99
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$13.99
Whether you're installing a replacement axle or reinstalling the original, you'll need Detroit Speed U-bolt kits. These kits include 4 U-bolts, 8 washers, and 8 tall nuts. Detroit Speed U-bolt kits will keep your beast rolling straight down the road.
( 9 )
$44.95
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$69.95
BDS Suspension offers leaf spring U-bolts in a variety of lengths, diameters, and inside widths. The round or square style fasteners are machined from steel with a black EDP coating for protection.
( 1 )
$10.95
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$11.95
Allstar Performance U-bolt kits include nuts, and U-bolts. You'll have everything that you need to secure a driveshaft to a pinion yoke.
( 14 )
$13.99
Shafer's Classic Reproductions rear-end housing U-bolts are made to original specs for a better fit and an easier install. Shafer's includes nuts with their steel U-bolts.
( 2 )
$12.99
Wheeler's Off-Road rear leaf U-bolt flip kits provide increased rear ground clearance and protection of your U-bolt threads. The plates are drilled and tapped for mounting a cushion-type bump stop, like Wheeler's SuperBumps or they have a kick-out for use with a frame-mounted hydraulic or air bump system to contact. Features and contents: * Designed for rear leaf springs only * Plates are clear zinc coated and 3/8 in. thick * Threaded holes are 3/8 in.-16 with a 4 in. spread * Kit includes: -- Four zinc coated 1/2 in. Grade 5 U-bolts (8.75 in. long) -- Zinc coated plates -- Zinc coated hardware
Not Yet Reviewed
$99.88
Icon Vehicle Dynamics leaf spring U-bolts are designed to enhance your vehicle's performance and give it the stance you want. These leaf spring U-bolts are made with both accuracy and precision for a perfect fit, and are engineered to be tough and durable to perform reliably and consistently for miles to come. So, swap out those worn out, sagging, or weak springs or components with top-grade suspension parts from Icon Vehicle Dynamics.
Not Yet Reviewed
$83.88
Do you need to replace your old or broken U-bolts? Tough Country replacement U-bolts will work with most stock or aftermarket leaf springs. Tough Country manufactures these U-bolts from quality steel to ensure performance and durability. They come available for many popular truck applications.
( 142 )
$30.99
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$73.99
Low Range Off-Road extended U-bolts are designed to fit a broad range of lifts. They are 2 in. longer than stock, but the threads begin in the same place as the OE ones. That means that Low Range Off-Road extended U-bolts work on stock applications while still fitting spring-over lifts, heavy-duty springs, and small lift blocks. LROR U-bolts are zinc-plated for corrosion resistance and come with matching nuts and washers.
Not Yet Reviewed
$43.46
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$53.12
There are many parts that can be used twice, but U-bolts aren't on the list. When installing axles on your Jeep, use Rugged Ridge U-bolts. These 1/2 in.-20 bolts are strong enough to handle moderately taller tires in rugged off-road conditions.
Not Yet Reviewed
$7.99
Replace your old or broken U-bolts with these high-strength Skyjacker replacement U-bolt kits. These kits will work with stock or aftermarket leaf spring packs.
( 44 )
$5.69
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$78.36
IHC offers a variety of suspension components, including these leaf spring U-bolts. These steel fasteners have a gold iridited chromate conversion finish. The square-style bolts include stainless steel washers and nuts to facilitate an easy installation.
Not Yet Reviewed
$80.00
Whether you're just replacing old, worn-out U-bolts or doing a full restoration, these Western Chassis replacement axle U-bolts are for you. They include a heavy washer and a Nyloc nut.
( 5 )
$11.99
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$21.99
OMIX-ADA offers the finest in off-road solutions, right down to their U-bolts. Whether your needs are for the front or rear, large or small, OMIX-ADA steel U-bolts are durable enough to handle your off-road adventures. Choose the OMIX-ADA U-bolts that are the best fit for your Jeep application. Most include nuts and washers.
( 7 )
$12.99
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$18.99
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