BST BSSP Front Torsion Bar Mount Kit — Pair for 1999–2007 Chevy Silverado & GMC Sierra, Powder-Coated

BST BSSP Pair front torsion bar mount kit replaces worn or broken front torsion bar mounts on 1999–2007 Chevy Silverado and GMC Sierra 4WD trucks.

This aftermarket front torsion bar crossmember mounting kit is a complete replacement set engineered to restore front suspension alignment and ride height on compatible Chevy and GMC 4x4 trucks. The kit arrives with two steel mounts, bushings, and all necessary bolts and nuts; each component is powder-coated for corrosion resistance. Designed for direct-fit installation on driver or passenger sides, it fits a range of Silverado and Sierra models from 1999 through 2007 (including HD and Classic variants where specified).

Which trucks will this torsion bar mount kit fit?

The kit is made for 4WD Chevy Silverado and GMC Sierra models from the late 1990s through 2007. It covers 1500 and 2500/2500HD model years listed and fits both left (driver) and right (passenger) front mounting locations. Double-check your vehicle’s year and 4x4 configuration to confirm compatibility before ordering.

• Compatible models: Chevrolet Silverado 1500 (1999–2007), Silverado 2500/2500HD (select years)
• Also fits GMC Sierra 1500 (1999–2007) and Sierra 2500/2500HD (select years)
• Fits front left or right torsion bar mounts on 4WD trucks
• Cross-references: part numbers 905506, 15153956, 20829013

What components are included and what condition are they in?

The package contains two front torsion bar mounting brackets with pre-installed bushings, plus eight bolts and eight nuts so you have everything for a full front-side replacement. All parts arrive new and protected by a black powder-coat finish to resist rust and wear. Hardware is included to make the swap straightforward for a mechanic or experienced DIYer.

• 2 torsion bar mounts with bushings (left and right compatible)
• 8 mounting bolts and 8 matching nuts
• Powder-coated steel construction for durability
• Installation instructions included; professional installation recommended

How does this kit affect ride and suspension performance?

Replacing damaged or corroded torsion bar mounts restores the intended mounting points for the torsion bars, which helps maintain correct ride height and suspension geometry. While this kit doesn’t change spring rates, it ensures the torsion bars are secured properly so the front suspension behaves as designed. Use alignment services after installation if alignment or steering issues were present before replacement.

• Re-establishes secure torsion bar anchor points
• Helps restore factory ride height when mounts were worn
• Prevents further metal fatigue from loose or rotted mounts
• Recommended wheel alignment after installation if necessary

Who is this for: This BST BSSP front torsion bar mounting kit is intended for owners, mechanics, and restoration shops working on 1999–2007 Chevrolet Silverado and GMC Sierra 4WD trucks that need a reliable, direct-fit replacement for worn or broken front torsion bar mounts. It’s ideal for people replacing one or both front mounts, preparing a truck for winter use, restoring a project vehicle, or correcting suspension issues caused by rusted or damaged mounts. If you want OEM-style fit with aftermarket value and all required hardware included, this kit provides a straightforward repair option.