Best Automotive Replacement Shock Cushions & Mounts (2026 Guide)
We selected products with high user ratings and substantial review volume, emphasizing correct fitment, mounting design, and durable materials for Silverado/Sierra rear shock and crossmember applications
The Verdict
- Best Overall: KSP Rear Shock Extender for 1999-2024 Silverado/Sierra — Best for lifted late-model trucks: rear shock extender designed for 1999–2024 Silverado/Sierra to maintain rear shock geometry
- Best Premium: Mountainpeak 3pc Rear Crossmembers for Silverado/Sierra 1500 — Best for full replacement: three-piece rear crossmember set that reinstates fuel tank support and rear shock mounts on 1500 trucks
This guide covers top-rated automotive replacement shock cushions, mounts, extenders, and crossmembers for Silverado and Sierra platforms, selected by overall rating and review volume. Picks prioritize fitment compatibility, mounting design, and durable materials to help you match parts to lift/lowering needs and chassis repairs
Top Picks
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1
Best Overall KSP Rear Shock Extender for 1999-2024 Silverado/Sierra
Best for lifted late-model trucks: rear shock extender designed for 1999–2024 Silverado/Sierra to maintain rear shock geometry
Rear shock extender brackets for 1999-2024 Silverado/Sierra 1500. CNC machined steel, black powder coated for rust resistance. Easy installation without cutting or welding and compatible with original shocks
- compatible with 1999-2024 Silverado/Sierra
- does not require cutting or welding
- rust-resistant finish and durable build
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2
KSP adjustable shock extenders for Silverado/Sierra 1988-1998
Best for classic models: adjustable shock extenders suited to 1988–1998 Silverado/Sierra that accommodate lowering and custom setups
Universal 3-5 inch rear lowering shock extenders with 2 brackets and 6 bolts. Designed to optimize suspension geometry and reduce overextension. Customers note easy installation and good fit, with mixed feedback on hardware length
- direct bolt-on installation
- raises shock angle for stability
- pack includes brackets and bolts
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3
Shock extenders for Silverado/Sierra 1500 (4"-6") mounting kit
Best for moderate lifts: mounting kit provides 4"–6" rear shock extension to restore proper shock angle on lifted 1500 trucks
Shock extension kit for 1999-2006 Chevy Silverado 1500 and GMC Sierra 1500. Enhances mounting height for rear shocks with stamped steel, electrostatically coated and powder coated for durability. One customer notes easy installation and good fit
- heavy-duty steel construction
- corrosion-resistant coating
- universal 1999-2006 fit
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4
Weld on Tabs 1/2in Hole – Weld On Shock Mount Tabs (20 pcs)
Best for fabricators: 1/2"-hole weld-on steel tabs sold in bulk for creating custom shock mounts and repairs
Weld on shock mount tabs with 1/2" hole for secure mounting. FEA-optimized edge thickness enhances tear-out resistance and reduces warpage. Premium acid-washed steel base with stress-relief annealing improves stiffness
- 1/2" hole weld tabs
- anti-sway design for center hole
- pre-treated with acid cleaning and stress relief
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5
Rear Spare Tire Support Plate for Silverado/Sierra Crossmember
Best for spare focus and crossmember repair: rear spare tire support plate that ties into the crossmember area on Silverado/Sierra
Rear spare tire support crossmember for 1999-2014 Chevy Silverado and GMC Sierra 1500. Heavy-duty steel with galvanized finish for corrosion resistance; easy installation without bed removal. Customers note solid build and good fit
- heavy-duty material
- galvanized surface
- easy installation without bed removal
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6
Best Premium Mountainpeak 3pc Rear Crossmembers for Silverado/Sierra 1500
Best for full replacement: three-piece rear crossmember set that reinstates fuel tank support and rear shock mounts on 1500 trucks
Three crossmembers replace damaged rear fuel tank support, rear upper shock mount, and rear spare tire support frame on 2007-2014 Chevy Silverado 1500 / GMC Sierra 1500. Includes easy installation and no bed removal, with a solid weld connection
- 3-piece crossmember kit
- Direct fit for Silverado/Sierra 1500
- Includes multiple rear mount components
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7
Rear Fuel Tank Support Crossmember & Rear Upper Shock Mount
Best for combined support: rear fuel tank support crossmember with upper shock mount to restore multiple rear-end mounting points
Crossmembers fit for 2007-2014 Chevy Silverado and GMC Sierra 1500. includes mounting bracket; easy to install with no modifications required. customers note quality fit and ease of installation
- two-piece crossmembers
- no modifications needed
- direct replacement for OE crossmember