Elka Suspension 2.5 DC Piggyback Rear Shocks for 0 to 1-Inch Lift (11-25 Sierra 2500 HD)Find parts that fit my vehicle

Increase the off-road capabilities while improving the comfort and handling of your truck
The 2.5 DC PIGGYBACK shocks provide the optimal combination of:

Firm and stable handling for driving on desert and fire roads (sports car feeling);
Plush compliance while off-road driving over washboard;
Strong ramping effect for extra bottom-out protection over large dips and washes;
Maximum articulation and traction for rock climbing.
BENEFITS

Wide range of highly effective compression adjustment
Precise fine-tuning of high-& low-speed compression, no need to compromise with your settings
High-performance off-road capabilities
Improved handling and comfort for casual driving
Better traction
Provides leveling capabilities for better weight distribution
Increased protection against bottoming-out
RIDE ENHANCEMENTS

Spring setup optimized for each setup
Better attenuation of vibration, leading to major noise reduction in the cabin (much less squeak and rattle)
Damping characteristics optimized for each truck and setup, providing a smoother ride
Increased comfort in both on road and off-road conditions, especially over washboard and square-edge impacts
More stable and more predictable handling
Reduced front-end diving when cornering or braking
Reduced rear-end bucking and lifting
Increased damping and spring rate for better handling when towing or loading truck
TECHNICAL FEATURES

Massive 2.5 in. (56mm) hard-anodized aluminum body for cooler operation
Big bore design with less restricted oil flow for increased responsiveness and less fading
Internal hydraulic valving optimized for each vehicle platform
Built from CNC-machined and forged aluminum parts, aluminum bodies and premium-quality internal components
External piggyback reservoir with low-friction floating piston (1:1 ratio vs. main piston) providing additional cooling
DOT high-flow reservoir hose
Heavy-duty 7/8 in. (22mm) induction-hardened shaft
Triple sealing system with dust wiper, high-pressure step-seal and premium quality o-ring
Direct, bolt-on replacement that uses stock shocks location
Proprietary ultra-low friction, light viscosity semi-synthetic oil blend, ultra-resistant to high operating temperature
Coilover models use Elka’s durable high-tensile alloy springs or Eibach springs (depending on model & configuration)
Fully rebuildable using affordable replacements parts and springs, multiple replacement valving shim stacks available
The 2.5 DC PIGGYBACK model allows precise fine-tuning of the high-& low-speed compression damping so you can adapt the suspension for your specific driving style and terrain conditions without compromise. It also features an external remote reservoir directly attached to the shock body with increased oil volume for cooler operating temperature, providing better performance and consistency.

This configuration is optimized for use with stock geometry or can be used with lift kits between 0 in. to 1 in. that use stock length shocks (with or without relocator brackets).

Ride height is not affected by the installation of these shocks.

Package includes two (2) side-specific rear shocks:



ADJUSTMENTS

High-Speed Compression
Low-Speed Compression

Fitment:

• 2011 GMC Sierra 2500
• 2012 GMC Sierra 2500
• 2013 GMC Sierra 2500
• 2014 GMC Sierra 2500
• 2015 GMC Sierra 2500
• 2016 GMC Sierra 2500
• 2017 GMC Sierra 2500
• 2018 GMC Sierra 2500
• 2019 GMC Sierra 2500
• 2020 GMC Sierra 2500
• 2021 GMC Sierra 2500
• 2022 GMC Sierra 2500
• 2023 GMC Sierra 2500
• 2024 GMC Sierra 2500
• 2025 GMC Sierra 2500

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