_810.png "ICON 2.5v IR Shocks 11-19 GM 2500/3500 Custom Designed 4-5\" Lift Kits")
Injected Motorsports and Icon Vehicle Dynamics got together and created the 2.5v IR shock for the 11-19 GM 2500/3500 trucks with a 4-5" lift kit. Below we'll explain how these should be installed and some of the measurements involved as well. We even had the mounts made to fit the BDS style 4.5" lift kits that change the shock mount types.
ICON is a superior suspension company that specializes in off-road applications and provides top-notch products. The 2.5v is an internal reservoir configured specifically for each application in both length and damping tune. Made with 6061 aircraft grade aluminum CNC machined components, precision machined 1026 DOM steel shock body, and premium grade 5WT shock oil for consistent suspension damping along a wide temperature range. These shocks are also 100% revalveable and rebuildable!
The 7/8” diameter induction hardened, chrome plated shock shaft provides a beefier rod to withstand on and off-road conditions over its competition. Shocks are under 250 psi!
Tools Needed:
- JACK, JACK STANDS
- TORQUE WRENCH
- 9/16” SOCKET / WRENCH 3/4” SOCKET / WRENCH 13/16” SOCKET / WRENCH 7/8” SOCKET
- WRENCH 19MM SOCKET / WRENCH 21MM SOCKET / WRENCH
We installed these front shocks on a 2017 GM Duramax 2500HD with a Cognito 4" lift. Truck is sitting close to 4.5" here in the pictures on the front. Below we show how to place the bushings and also how to install less or extra travel.
How to install the hardware on shock (bar in middle shows where the truck frame bracket is)
Factory Mount Indention (Topside)
ICON Shock Mount Bracket (Hole in the middle needs to be closer to the outside)
ICON Mount installed (tighten the 2 bolts first before putting the shock in) **Torque to 110 ft-lbs
Placing the Icon shock into place after tightening the mounting bracket hardware (torque to 50 ft-lbs) DO NOT OVERTIGHTEN
**Torque to factory spec For Bottom Shock Mount Bolt
Depending on your vehicle's ride height application it's easier to place the shock rod through the top and place a nut on there to hold, then either raise or lower the control arm (lower) to slide the bottom bolt through.
If you need MORE travel and the lift height is closer to 5" then place the mounting bracket on the bottom of the frame mount. Less travel or closer to 4" then place it on the top.
Finished Product of the Shock Mounted on Top Side
**The BDS Style changes the lower Mounts to an Eyelet style and the top is the same stem as the bar pin mount system. Links below for both styles!
https://www.injectedmotorsports.com/product/icon-25v-series-shock-4-5-front-lift-height-custom-11-19-gm-2500-3500-hd
https://www.injectedmotorsports.com/product/icon-25v-series-shock-4-5-front-lift-height-custom-bds-lifts-11-19-gm-2500-3500-hd