SKU: 910104 | UPC: 738283446405
MaxTrac Rear U-Bolts for 3in/4in Lift Blocks - 12.50in x 2.625in x 9/16in - Set of 4 Fits Chevy GMC Toyota Nissan Trucks
Secure your rear lift blocks with this MaxTrac set of 4 heavy-duty U-bolts designed for 3-inch or 4-inch blocks on leaf spring suspensions. They fit 1988-2018 Chevrolet C/K1500 Silverado Colorado GMC C/K1500 Sierra Canyon plus Nissan Titan and Toyota Tacoma Tundra models. Built to clamp firmly under load for stable handling and long-term reliability on lifted trucks.
Key Features
- Precise Dimensions: 12.50-inch length 2.625-inch inside diameter 9/16-inch thread diameter ensures perfect fit for standard lift blocks without binding or slippage
- Complete Hardware Set: Includes 4 U-bolts 8 thick nuts and 8 washers for immediate installation and secure clamping
- Square End Design: Prevents rotation during torquing and maintains alignment on axle housing
- High-Strength Steel: Cold-forged construction resists bending fatigue and supports heavier loads on lifted rear suspensions
- Corrosion Protection: Zinc plating defends against rust in harsh conditions extending service life
Product Notes
- Confirm your lift block requires 2.625-inch wide U-bolts before purchase
- Use only with rear leaf spring setups and compatible blocks
- Weight 7.8 lbs per set for easy handling
Installation Notes
- Professional installation recommended.
- Torque nuts to 120-150 ft-lbs in a star pattern after compressing leaf pack
- Compatible with OEM and aftermarket axle housings verify clearance
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1990-1993 | Chevrolet | C1500 | 454 SS |
| 1994-1997 | Chevrolet | C1500 | Base |
| 1988-1998 | Chevrolet | C1500 | Cheyenne |
| 1999 | Chevrolet | C1500 | LS |
| 1988-1992 | Chevrolet | C1500 | Scottsdale |
| 1988-1998 | Chevrolet | C1500 | Silverado |
| 1990-1998 | Chevrolet | C1500 | WT |
| 2015-2018 | Chevrolet | Colorado | Base |
| 2015-2018 | Chevrolet | Colorado | LT |
| 2015-2018 | Chevrolet | Colorado | WT |
| 2015-2018 | Chevrolet | Colorado | Z71 |
| 1994-1997 | Chevrolet | K1500 | Base |
| 1988-1998 | Chevrolet | K1500 | Cheyenne |
| 1999 | Chevrolet | K1500 | LS |
| 1988-1992 | Chevrolet | K1500 | Scottsdale |
| 1988-1998 | Chevrolet | K1500 | Silverado |
| 1991 | Chevrolet | K1500 | Sport |
| 1990-1998 | Chevrolet | K1500 | WT |
| 1999-2005 | Chevrolet | Silverado 1500 | Base |
| 2016-2018 | Chevrolet | Silverado 1500 | Custom |
| 2014-2018 | Chevrolet | Silverado 1500 | High Country |
| 1999-2006,2008-2013,2015-2018 | Chevrolet | Silverado 1500 | LS |
| 1999-2018 | Chevrolet | Silverado 1500 | LT |
| 2007-2018 | Chevrolet | Silverado 1500 | LTZ |
| 2005-2006 | Chevrolet | Silverado 1500 | SS |
| 2015-2018 | Chevrolet | Silverado 1500 | SSV |
| 2002-2004,2006-2018 | Chevrolet | Silverado 1500 | WT |
| 2010-2013 | Chevrolet | Silverado 1500 | XFE |
| 2004 | Chevrolet | Silverado 1500 | Z71 |
| 2007 | Chevrolet | Silverado 1500 Classic | LS |
| 2007 | Chevrolet | Silverado 1500 Classic | LT |
| 2007 | Chevrolet | Silverado 1500 Classic | SS |
| 2007 | Chevrolet | Silverado 1500 Classic | WT |
| 2005 | Chevrolet | Silverado 1500 HD | Base |
| 2001-2003,2005 | Chevrolet | Silverado 1500 HD | LS |
| 2001-2003,2005-2006 | Chevrolet | Silverado 1500 HD | LT |
| 2007 | Chevrolet | Silverado 1500 HD Classic | LT |
| 1988-1993 | GMC | C1500 | Sierra |
| 1997 | GMC | C1500 | Sierra GT |
| 1994-1999 | GMC | C1500 | Sierra SL |
| 1988-1999 | GMC | C1500 | Sierra SLE |
| 1994-1999 | GMC | C1500 | Sierra SLT |
| 1988-1993 | GMC | C1500 | Sierra SLX |
| 1994-1998 | GMC | C1500 | Sierra Special |
| 2015-2018 | GMC | Canyon | Base |
| 2017-2018 | GMC | Canyon | Denali |
| 2015-2018 | GMC | Canyon | SL |
| 2015-2018 | GMC | Canyon | SLE |
| 2015-2018 | GMC | Canyon | SLT |
| 1988-1993 | GMC | K1500 | Sierra |
| 1994-1999 | GMC | K1500 | Sierra SL |
| 1988-1999 | GMC | K1500 | Sierra SLE |
| 1995 | GMC | K1500 | Sierra SLS |
| 1994-1999 | GMC | K1500 | Sierra SLT |
| 1988-1993 | GMC | K1500 | Sierra SLX |
| 1994-1998 | GMC | K1500 | Sierra Special |
| 1993 | GMC | K1500 | Sierra Sport |
| 2002-2005,2014-2018 | GMC | Sierra 1500 | Base |
| 2007-2018 | GMC | Sierra 1500 | Denali |
| 2002 | GMC | Sierra 1500 | HT |
| 1999-2003,2006,2008-2013 | GMC | Sierra 1500 | SL |
| 1999-2018 | GMC | Sierra 1500 | SLE |
| 1999-2018 | GMC | Sierra 1500 | SLT |
| 2002-2013 | GMC | Sierra 1500 | WT |
| 2010-2013 | GMC | Sierra 1500 | XFE |
| 2007 | GMC | Sierra 1500 Classic | SL |
| 2007 | GMC | Sierra 1500 Classic | SLE |
| 2007 | GMC | Sierra 1500 Classic | SLT |
| 2007 | GMC | Sierra 1500 Classic | WT |
| 2001-2003,2005-2006 | GMC | Sierra 1500 HD | SLE |
| 2001-2003,2005-2006 | GMC | Sierra 1500 HD | SLT |
| 2007 | GMC | Sierra 1500 HD Classic | SLE |
| 2007 | GMC | Sierra 1500 HD Classic | SLT |
| 2004-2010 | Nissan | Titan | LE |
| 2011-2015 | Nissan | Titan | S |
| 2004-2010 | Nissan | Titan | SE |
| 2011-2015 | Nissan | Titan | SL |
| 2011-2015 | Nissan | Titan | SV |
| 2004-2010 | Nissan | Titan | XE |
| 2005-2015 | Toyota | Tacoma | Base |
| 2016-2018 | Toyota | Tacoma | Limited |
| 2005-2015 | Toyota | Tacoma | Pre Runner |
| 2016-2018 | Toyota | Tacoma | SR |
| 2016-2018 | Toyota | Tacoma | SR5 |
| 2016-2018 | Toyota | Tacoma | TRD Off-Road |
| 2017 | Toyota | Tacoma | TRD Pro |
| 2016-2018 | Toyota | Tacoma | TRD Sport |
| 2014-2018 | Toyota | Tundra | 1794 Edition |
| 2007-2013 | Toyota | Tundra | Base |
| 2007-2018 | Toyota | Tundra | Limited |
| 2013-2018 | Toyota | Tundra | Platinum |
| 2014-2018 | Toyota | Tundra | SR |
| 2007-2011,2014-2018 | Toyota | Tundra | SR5 |
Why Choose MaxTrac?
- Established leader in truck suspension parts since 1999
- Manufactured with tight tolerances for direct bolt-on fit
- Tested for durability on real-world lifted vehicles
Frequently Asked Questions
-
Q: Do these fit 2016 Chevy Silverado 1500 LT?
A: Yes fits 1999-2018 Silverado 1500 LT and all listed submodels with leaf spring rear -
Q: What material are the U-bolts made from?
A: High-tensile steel with zinc plating for strength and rust resistance -
Q: What is the warranty?
A: Limited lifetime warranty covers defects in materials and workmanship
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Durable cardboard box 14 x 6 x 4 inches
- Weight: 7.8 lbs
Leaf Springs & Accessories
Leaf springs and leaf spring accessories for trucks, SUVs, and off road builds are stocked at Black Ops Auto Works. Shop add a leaf kits, helper springs, replacement leaf spring packs, lowering flip kits, U-bolts, shackles, bushings, center pins, and tie bolts for Ford F-150, F-250, Ram 1500, 2500, and 3500, Toyota Tacoma and Tundra, Nissan Titan and Frontier, and Chevrolet and GMC truck platforms from Hellwig, Tuff Country, ICON, Skyjacker, MaxTrac, and ARB. Every leaf spring product is filterable by year, make, model, trim, cab configuration, and drivetrain so the correct pack rate, arch, and load rating ships the first time. Black Ops Auto Works carries 657 leaf spring SKUs across add a leaf, helper spring, replacement pack, and hardware categories. What This Collection Covers Leaf springs remain the primary rear suspension design on most half ton, three quarter ton, and one ton trucks because they handle high load capacity and towing duty better than coil or multi link desig...
View Leaf Springs & Accessories Products
Maxtrac
Maxtrac parts and accessories are stocked at Black Ops Auto Works for enthusiasts building reliable street, track, tow, and restoration projects. Shop lift kits, lowering kits, leveling spacers, coil springs, torsion keys, spindles, lift blocks, shocks, radius arms, control hardware, and truck suspension components for Ford F-150, Ranger, Super Duty, Raptor, Chevrolet and GMC 1500 trucks, Ram pickups, Nissan Titan, and Jeep Wrangler applications. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 250 Maxtrac SKUs across lift, leveling, lowering, spring, shock, spindle, and truck chassis categories. What This Maxtrac Collection Covers Maxtrac specializes in suspension systems for pickups, SUVs, and Jeeps, with options for lifting, leveling, lowering, and ride-control upgrades. The parts are built around platform-specific truck chassis, not passenger-car applications. Lift and Level ...
View Maxtrac Products
Suspension
Suspension parts and complete kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, chassis bracing, alignment hardware, air suspension, and complete stage kits from Bilstein, KW, Ohlins, Fox, KING, ICON, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Start with a matched shock and spring package or a full coilover kit, then layer in sway bars, chassis bracing, and camber adjustment hardware. Every part is filterable by year, make, model, trim, and drivetrain to confirm fitment before ordering. What This Category Covers Suspension is the highest-leverage handling upgrade on any vehicle. A properly matched shock, spring, and sway bar package produces measurable i...
View Suspension Products


