HSP Diesel 58 Inch Bolt On Traction Bars for 4 Inch Axle Diameter 2011-2019 Chevrolet and GMC LML / L5P Duramax

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