HSP Diesel 70in Bolt On Traction Bars For 3.5in Axle Diameter 2001-2010 Chevrolet And GMC LB7 / LLY / LBZ / LMM Duramax
This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
Colours and prices as published by HSP Diesel · verified 9/8/2026
Select your truck to continue
Ships directly from the supplier. The final shipping cost will be shown before payment.
- Ships from HSP Diesel
HSP 70" Bolt-On Traction Bars 3.5in Axle Diameter for 2001-2010 Chevrolet / GMC Duramax LB7 / LLY / LBZ / LMM The 035-2-HSP, or HSP 70" Bolt-On Traction Bars for 3.5" axle diameters, are built for the 2001-2010 Chevrolet and GMC Duramax trucks. These bars arent just for modified rigs—this kit performs exceptionally well on stock trucks, daily drivers, drag builds, and everything in between. Why You Need the HSP 70" Traction Bar Kit Diesel trucks tend to be front-heavy due to their large engines, plow equipment, and other accessories. With less weight over the rear tires and the high torque output of Duramax engines, this often results in wheel hop—a violent up-down motion of the wheels while trying to gain traction. Though it may seem harmless, wheel hop can damage driveshafts, axles, u-joints, and more. If you're spinning, you're not winning—and traction bars are the solution. What Makes HSP Traction Bars Different The HSP 70" bars anchor the axle to the frame, eliminating unwanted movement under load. This ensures smoother power delivery to the ground. Our traction bar kits are engineered to last—no clunky fitment or inferior parts here. Whether you're launching hard at the track or pulling a trailer, HSP traction bars have been proven over millions of miles. They're easy to install and built for long-term performance. Whats Included 1x 70" Bolt On Traction Bar (HSP-IN-678-2) 1x 70" Bolt On Traction Bar (HSP-IN-678-2) 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) 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 Info: The 8th character of the VIN indicates the engine; the 10th character identifies the model year. Special Notes These 70" traction bars are designed to fit Crew Cab and Extended Cab trucks with 6-foot beds. If you prefer a longer traction bar look, or if your truck has over 4" of rear lift, we recommend the 75" bars (Part Number: 035-3-HSP). Contact us if youre unsure about the correct size for your truck. Overview Complete bolt-on installation for most applications Available in custom and standard powder coat colors Upgraded rear brackets for added strength No special tools required for install Improves traction and power delivery Multiple length options for proper fitment Our Warranty HSP NO BS LIMITED LIFETIME WARRANTY At HSP, we believe in our products and stand behind every part that leaves our facility. We've always taken care of our customers, and with our official "No BS" warranty, were formalizing that commitment. Its straightforward, transparent, and built to protect your investment. For more information about our Lifetime No BS Warranty, click HERE.
HSP 70" Bolt-On Traction Bars 3.5in Axle Diameter for 2001-2010 Chevrolet / GMC Duramax LB7 / LLY / LBZ / LMM The 035-2-HSP, or HSP 70" Bolt-On Traction Bars for 3.5" axle diameters, are built for the 2001-2010 Chevrolet and GMC Duramax trucks. These bars arent just for modified rigs—this kit performs exceptionally well on stock trucks, daily drivers, drag builds, and everything in between. Why You Need the HSP 70" Traction Bar Kit Diesel trucks tend to be front-heavy due to their large engines, plow equipment, and other accessories. With less weight over the rear tires and the high torque output of Duramax engines, this often results in wheel hop—a violent up-down motion of the wheels while trying to gain traction. Though it may seem harmless, wheel hop can damage driveshafts, axles, u-joints, and more. If you're spinning, you're not winning—and traction bars are the solution. What Makes HSP Traction Bars Different The HSP 70" bars anchor the axle to the frame, eliminating unwanted movement under load. This ensures smoother power delivery to the ground. Our traction bar kits are engineered to last—no clunky fitment or inferior parts here. Whether you're launching hard at the track or pulling a trailer, HSP traction bars have been proven over millions of miles. They're easy to install and built for long-term performance. Whats Included 1x 70" Bolt On Traction Bar (HSP-IN-678-2) 1x 70" Bolt On Traction Bar (HSP-IN-678-2) 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) 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 Info: The 8th character of the VIN indicates the engine; the 10th character identifies the model year. Special Notes These 70" traction bars are designed to fit Crew Cab and Extended Cab trucks with 6-foot beds. If you prefer a longer traction bar look, or if your truck has over 4" of rear lift, we recommend the 75" bars (Part Number: 035-3-HSP). Contact us if youre unsure about the correct size for your truck. Overview Complete bolt-on installation for most applications Available in custom and standard powder coat colors Upgraded rear brackets for added strength No special tools required for install Improves traction and power delivery Multiple length options for proper fitment Our Warranty HSP NO BS LIMITED LIFETIME WARRANTY At HSP, we believe in our products and stand behind every part that leaves our facility. We've always taken care of our customers, and with our official "No BS" warranty, were formalizing that commitment. Its straightforward, transparent, and built to protect your investment. For more information about our Lifetime No BS Warranty, click HERE.
HSP offers a limited lifetime warranty to the original purchaser on eligible HSP products. Underhood powder coating has separate two-year limited coverage. Non-HSP brands follow their own manufacturer warranties. Discontinued products and customer/installer damage are excluded. Claim authorization is required; customer pays inbound shipping for ordinary claims.
Return and warranty information is based on what HSP Diesel offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
HSP Diesel warranty policyView complete warrantyProduct conditions
Return and warranty information is based on what HSP Diesel offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
Professional installation is recommended.
- Return eligibility
- HSP states returns must be postmarked within 30 days of purchase, new and unused with original tags and packaging, with an approved RMA. A 15% restocking fee and customer-paid return shipping apply. Special orders, non-HSP dropship products, apparel, used items and custom colors are excluded. Based on what HSP Diesel offers.
- Return window
- Not stated for this product; see supplier terms
- Restocking fee
- See supplier terms; no product-specific fee stated
- Return shipping
- Based on the supplier’s return policy; see terms
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
- Warranty provider
- HSP Diesel
- Warranty duration
- Product-specific duration not stated; see supplier terms
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–10 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- HSP Diesel
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.