HSP Diesel 58 Inch Bolt On Traction Bars for 4 Inch Axle Diameter 2011-2019 Chevrolet and GMC LML / L5P Duramax
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Colours and prices as published by HSP Diesel · verified 9/8/2026
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HSP 58" Bolt-On Traction Bars 4" Axle Diameter for 2011-2019 Chevrolet / GMC Duramax LML / L5P Part Number: 535-1-HSP The HSP 58" Bolt-On Traction Bars are designed for 2011-2019 Chevrolet and GMC Duramax trucks with 4" axle diameters. This kit is a perfect solution not only for heavily modified trucks but also for stock daily drivers looking to eliminate wheel hop and increase performance and reliability. Why You Need This Kit Diesel trucks are naturally front-heavy due to large engine bays, snowplow hardware, and aftermarket components. This imbalance paired with rear-wheel torque leads to wheel hop—a violent up-and-down bounce of the rear wheels when traction is lost. Wheel hop can cause catastrophic damage to driveshafts, axles, yokes, and u-joints. HSPs 58" traction bars are a preventative measure that ensures power reaches the pavement smoothly and safely. What Makes the HSP Kit Different? The HSP 58" Bolt-On Traction Bars connect the rear axle to the truck frame using precision-engineered brackets and bushings. This eliminates unwanted axle wrap, stabilizes suspension under load, and ensures optimal traction and power delivery. These bars are built with top-tier materials and are tested across drag strips, work sites, and everyday driving. They install easily and fit perfectly the first time, with no clunky parts or guesswork. Whats Included 1x 58" Bolt On Traction Bar (HSP-IN-678-1) 1x 58" Bolt On Traction Bar (HSP-IN-678-1) 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 (11-19) (HSP-IN-663-2) 1x Rear Traction Bar Bracket (11-19) (HSP-IN-663-2) 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" x 1.062" OD Low Carbon Flat Washer (RFB-774-RFAB) 8x 1/2"-13 x 1-1/2" Grade 8 Hex Flange Bolt - Machined (RFB-775-1-RFAB) 8x 1/2"-13 Eco Finish Steel Top Lock Nut (RFB-776-RFAB) 1x 1/2" Pull Wire (RFB-777-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 LML: VIN Code 8 L5P: VIN Code Y How to Confirm
Fitment:
The 8th character of your VIN indicates the engine code; the 10th character indicates the model year. Special Note The 58-inch traction bars are designed to fit Regular Cab trucks with 8-foot beds. Please contact HSP if you are unsure which size traction bar kit is appropriate for your vehicle. Overview Complete bolt-on solution for most applications Powder coating options available, including custom colors Upgraded rear brackets for increased strength and durability Simple installation — no special tools required Improves traction and reduces wheel hop Multiple bar lengths available for accurate fitment Our Warranty HSP "NO BS" LIMITED LIFETIME WARRANTY At HSP, we believe in our products and proudly stand behind every part we manufacture. Weve always gone above and beyond to support our customers, and our “No BS” Lifetime Warranty formalizes that same exceptional standard. You can read the full warranty details by visiting the link below. Click here to view the HSP Warranty
HSP 58" Bolt-On Traction Bars 4" Axle Diameter for 2011-2019 Chevrolet / GMC Duramax LML / L5P Part Number: 535-1-HSP The HSP 58" Bolt-On Traction Bars are designed for 2011-2019 Chevrolet and GMC Duramax trucks with 4" axle diameters. This kit is a perfect solution not only for heavily modified trucks but also for stock daily drivers looking to eliminate wheel hop and increase performance and reliability. Why You Need This Kit Diesel trucks are naturally front-heavy due to large engine bays, snowplow hardware, and aftermarket components. This imbalance paired with rear-wheel torque leads to wheel hop—a violent up-and-down bounce of the rear wheels when traction is lost. Wheel hop can cause catastrophic damage to driveshafts, axles, yokes, and u-joints. HSPs 58" traction bars are a preventative measure that ensures power reaches the pavement smoothly and safely. What Makes the HSP Kit Different? The HSP 58" Bolt-On Traction Bars connect the rear axle to the truck frame using precision-engineered brackets and bushings. This eliminates unwanted axle wrap, stabilizes suspension under load, and ensures optimal traction and power delivery. These bars are built with top-tier materials and are tested across drag strips, work sites, and everyday driving. They install easily and fit perfectly the first time, with no clunky parts or guesswork. Whats Included 1x 58" Bolt On Traction Bar (HSP-IN-678-1) 1x 58" Bolt On Traction Bar (HSP-IN-678-1) 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 (11-19) (HSP-IN-663-2) 1x Rear Traction Bar Bracket (11-19) (HSP-IN-663-2) 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" x 1.062" OD Low Carbon Flat Washer (RFB-774-RFAB) 8x 1/2"-13 x 1-1/2" Grade 8 Hex Flange Bolt - Machined (RFB-775-1-RFAB) 8x 1/2"-13 Eco Finish Steel Top Lock Nut (RFB-776-RFAB) 1x 1/2" Pull Wire (RFB-777-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 LML: VIN Code 8 L5P: VIN Code Y How to Confirm
Fitment:
The 8th character of your VIN indicates the engine code; the 10th character indicates the model year. Special Note The 58-inch traction bars are designed to fit Regular Cab trucks with 8-foot beds. Please contact HSP if you are unsure which size traction bar kit is appropriate for your vehicle. Overview Complete bolt-on solution for most applications Powder coating options available, including custom colors Upgraded rear brackets for increased strength and durability Simple installation — no special tools required Improves traction and reduces wheel hop Multiple bar lengths available for accurate fitment Our Warranty HSP "NO BS" LIMITED LIFETIME WARRANTY At HSP, we believe in our products and proudly stand behind every part we manufacture. Weve always gone above and beyond to support our customers, and our “No BS” Lifetime Warranty formalizes that same exceptional standard. You can read the full warranty details by visiting the link below. Click here to view the HSP Warranty
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.