HSP DIESEL 77 INCH BOLT ON TRACTION BARS FOR 3.5 INCH |2001-2010 GM DURAMAX 6.6L|

NOTE - Due to demand, this is a 2-3 lead time to ship. Thanks!

HSP 77" Bolt-On Traction Bars 3.5in Axle Diameter for 2001-2010 Chevrolet / GMC Duramax LB7 / LLY / LBZ / LMM

The 035-3-HSP traction bars are designed for 2001-2010 Chevrolet and GMC Duramax-equipped trucks with a 3.5" axle diameter. This isn't just a performance upgrade—it's a smart solution for any diesel truck owner, from stock setups to serious street builds. These will help keep your truck planted, driveline happy, and look good doing it!

Why You Need the HSP 77" Bolt-On Traction Bar Kit

Diesel trucks are notoriously front-heavy, with plow hardware, heavy engines, and light rear ends. Combined with high torque output, this often leads to wheel hop—a violent up-and-down tire bounce that causes loss of traction and potential damage to driveshafts, axles, yokes, and u-joints. Whether you're towing, racing, or daily driving, traction matters. If you're spinning, you're not winning!

What Makes HSP Traction Bars Different?

These traction bars tie your axle directly to the frame, planting your suspension and dramatically reducing axle wrap. That means better torque transfer and improved power-to-ground efficiency. Built with top-tier components, these are not flimsy, noisy kits—HSP bars are engineered for performance, longevity, and a perfect fit. With proven use on drag, street, and work trucks, this is a trusted, bolt-on upgrade you'll feel immediately.

What's Included

• 1x 77" Bolt On Traction Bar (HSP-IN-678-3)
• 1x 77" Bolt On Traction Bar (HSP-IN-678-3)
• 1x Front Traction Bar Bracket Left (HSP-IN-657-D)
• 1x Front Traction Bar Bracket Right (HSP-IN-657-P)
• 1x Rear Traction Bar Bracket (01-10)(HSP-IN-663-1)
• 1x Rear Traction Bar Bracket (01-10) (HSP-IN-663-1)
• 4x 1/8" Aluminum Rivet (RFB-098-RFAB)
• 2x Small HSP Logo (Flat)(RFB-752-F-RFAB)
• 4x Polyurethane Bushings (RFB-835-RFAB)
• 2x Bushing Inserts (DOM Tubing)(RFB-836-RFAB)
• 8x 1/2"-13x1-1/4" Grade 8 Bolt (RFB-845-RFAB)
• 16x 1/2" Washer (RFB-846-RFAB)
• 8x 1/2"-13 Nylon Lock Nut (RFB-847-RFAB)
• 2x 5/8"-11x3-1/4" Grade 8 Bolt (RFB-848-RFAB)
• 2x 5/8"-11x3-3/4" Grade 8 Bolt (RFB-849-RFAB)
• 4x 5/8"-11 Nylon Lock Nut (RFB-850-RFAB)
• 8x 5/8" Washer (RFB-851-RFAB)
• 2x Flex Joint (3/4"-16 Thread, Bolt Dia. .625") (RFB-721-RFAB)
• 2x Jam Nut (3/4"-16) (RFB-722-RFAB)

Vehicle Fitment

• LB7: 2001-2004 (VIN Code 1)
• LLY: 2004.5-2005 (VIN Code 2)
• LBZ: 2006-2007 (VIN Code 2 or D)
• LMM: 2007.5-2010 (VIN Code 6)

VIN Note: The 8th character indicates the engine code; the 10th character indicates the model year.

Special Note

These 77" bars are designed for Crew Cab and Extended Cab trucks with 8-foot beds. If you're unsure about your configuration, please contact us before ordering to confirm the correct size.

Overview

• Complete bolt-on installation for most applications
• Powder coating options including custom colors
• Heavy-duty rear brackets for maximum strength
• Quick, tool-free installation—no welding required
• Eliminates wheel hop and improves traction under load
• Multiple lengths available to ensure perfect fit

Our Warranty

HSP NO BS LIMITED LIFETIME WARRANTY

At HSP, we believe in our products and stand behind every part we manufacture. Weve always gone above and beyond for our customers—and now weve made it official. Our “No BS” Lifetime Warranty is simple, transparent, and designed to protect your investment. Click the link below to learn more: