$630.00 $663.16

  • PART #: 535-1-HSP

The 535-1-HSP Or HSP 58" Bolt-On Traction Bars for 4IN Axle Diameter For the 2011-2019 Chevrolet and GMC Duramax is not just for the modified trucks. This is the first true bolt-on traction bar kit for the LML trucks!!

The HSP 58" Bolt-On Traction bars for 4in Axle Diameter is something that works for everyone. This is a kit that works for stock trucks, drag trucks, street monsters, and more. You won’t want to be the one missing out when it comes to our industry-leading kits.

Please Verify Fitment Before Ordering:
The 58-inch Traction bars are made to fit the Regular Cab 8ft Box. If you are unsure what size you need we recommend calling us to confirm.

Online ordering will be available soon. Please call us at (206) 466-5274 or email us your order to .

Kit Includes:

  • (2) Flex Joint (3/4" -16 Thread, Bolt Dia. .625")
  • (2) Jam Nut (3/4" - 16)
  • (8) 1/2" x 1.062" OD Low Carbon Flat Washer
  • (8) 1/2" - 13 x 1-1/2" Grade 8 Hex Flange Bolt
  • (8) 1/2" - 13 Eco Finish Steel Top Lock Nut
  • (1) 1/2" Pull Wire
  • (1) 30mm Step drill bit
  • (2) 5/8" - 11x3-1/4" Grade 8 Bolt
  • (2) 5/8" - 11x3-3/4" Grade 8 Bolt
  • (4) 5/8" - 11 Nylon Lock Nut
  • (8) 5/8" Washer
  • (4) Polyurethane Bushings
  • (2) bushing Inserts (DOM Tubing)
  • (4) 1/8" Aluminum Rivet

Why Use Traction Bars?

  • The biggest thing to remember is that diesel trucks in particular are extremely front-end heavy. This is because of the heavy engine bays, plow setups, and systems that are common in the diesel industry. Because of all this heavy front weight and lack of weight over the rear tires combined with all of the torque that is made causes something called WHEEL HOP. Wheel hop is when the tires attempt to get traction and the wheels literally bounce up and down. Now while this sounds like it’s not a big deal and it’s almost funny, it is a much larger problem than you think. Wheel hop is not only dangerous in terms of driving but it can cause catastrophic failures of suspension systems, including but not limited to driveshafts, axles, yokes, and u-joints. As well we all have to remember if you are spinning you are not winning.


  • Complete Bolt-on for most Applications
  • Powder Coating options to fit your truck including custom colors
  • Upgraded Complete Rear Brackets for increased Strength
  • Easy to install And no special tools required
  • Allows you to put more power to the ground and actually get traction
  • Multiple Options of lengths available to make sure it fits right the first time
Brand HSP
Shipping Weight 63 lb.
Shipping Width 9 in.
Shipping Length 63 in.
Shipping Height 9 in.
Warranty Yes
Prop 65 WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Year Make Model Engine
2011 Duramax 2500 Duramax LML
2011 Duramax 3500 Duramax LML
2012 Duramax 2500 Duramax LML
2012 Duramax 3500 Duramax LML
2013 Duramax 2500 Duramax LML
2013 Duramax 3500 Duramax LML
2014 Duramax 2500 Duramax LML
2014 Duramax 3500 Duramax LML
2015 Duramax 2500 Duramax LML
Year Make Model Engine
2015 Duramax 3500 Duramax LML
2016 Duramax 2500 Duramax LML
2016 Duramax 3500 Duramax LML
2017 Duramax 2500 Duramax L5P
2017 Duramax 3500 Duramax L5P
2018 Duramax 2500 Duramax L5P
2018 Duramax 3500 Duramax L5P
2019 Duramax 2500 Duramax L5P
2019 Duramax 3500 Duramax L5P

Diesel Dudes LLC is fueled by solid communication and proven performance in building diesel engines and trucks - honestly and expertly in Seattle.



1420 S Henderson St
Seattle, WA 98108



(206) 466-5274
Mon-Fri: 10am-6:30pm
Sat-Sun: Closed