Kryptonite Shock Extension Kit for 2011-2026 Chevy Silverado/GMC Sierra HD Trucks
- Chevrolet Silverado 2500 / 2500HD2011+
- Chevrolet Silverado 3500 / 3500HD2011+
- GMC Sierra 2500 / 2500HD2011+
- GMC Sierra 3500 / 3500HD2011+
Before you order
Not sure it fits? Ask us.
Send your year, model and engine. We'll confirm the part number before you buy.
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Delivery
Australia-wide
Usually 3β7 business days
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US & Canadian brands
Not copies or knock-offs
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20+ years fitting this gear
Aussie owned. 25 years in the auto trade.
About us
Normally ships within 3β8 business days
Right-hand-drive converted truck? Steering linkage, track bars and stabilisers are designed for factory left-hand-drive trucks. Some RHD conversions change the steering layout, so contact us with your conversion details before ordering and we'll confirm fitment.
Fits:Β
2011-2026 Chevy Silverado / GMC Sierra 2500HD
2011-2026 Chevy Silverado / GMC Sierra 3500HD
Important Fitment Details:
-
Will NOT fit 2024-2026 AT4X and ZR2 models equipped with DSSV shocks
Features:
- Up to 1β shock extension - spaces the upper mount to increase usable shock length in leveled applications
- Restores droop travel - allows full suspension travel when paired with Kryptonite or aftermarket upper control arms
- Protects factory shocks - prevents overextension and premature wear of stock-length shocks
- Billet 6061 aluminum construction - solid, high-strength design built to handle real use
- Black anodized finish - corrosion-resistant and holds up to harsh environments
- Grade 10.9 hardware - high-strength gold zinc-plated hardware for secure installation and corrosion resistance
- Simple bolt-on install - no cutting or fabrication required
Description:
If youβve leveled your 2011β2026 Silverado or Sierra HD, youβve likely reduced your available droop travel without realizing it. The factory shock becomes the limiting factor, causing the suspension to top out early and creating a harsher ride over dips, uneven terrain, and everyday road imperfections.
The Kryptonite Shock Extension Kit is designed to correct that issue by spacing the upper shock mount to provide up to 1β of additional shock length. This allows your factory-length or OE-equivalent shocks to cycle through more usable travel, restoring droop that is lost when adding a leveling kit.
When paired with Kryptonite or other aftermarket upper control arms, this kit allows the suspension to fully utilize the improved geometry and travel range. The result is better ride quality, improved front-end compliance, and reduced stress on your shocks during normal driving and off-road use.
Built from billet 6061 aluminum and finished in a durable black anodizing, these extensions are designed for long-term strength and corrosion resistance. Each kit includes grade 10.9 gold zinc-plated hardware for secure installation and added durability in harsh conditions.
If youβre running a leveling kit and want your front suspension to perform the way it should, this is is a simple, effective solution.
Includes:
- 4 x 0.5" Shock spacers
- 4 x Grade 10.9 bolts
- 4 x Grade 10.9 Nuts
Instructions:
CLICK HERE FOR COMPLETE INSTALLATION INSTRUCTIONS
Warranty:
(Kryptonite No Fine Print Lifetime Warranty)
Kryptonite Steering & Suspension components are warrantied for life to their original purchaser. This warranty covers manufacturer defects, premature wear, or breakage.Β Race it, jump it, offβroad it, wreck it, lift itβwe donβt care. If you can break it, weβll replace it.
Your KryptoniteΒ products must be purchased through an Authorized Dealer, and Warranty Registration completed within 90 days of purchase. Complete warranty details can be found [here].