Huge Improvement in Heat Dissipation and Off-Road Performance with Compression Adjustability

When a standard internal reservoir rear shock just isn't enough to handle the extreme applications you have in mind for your 2004-2026 F150, you can turn to our friends over at ICON and their 2.5 VS Series Piggyback Reservoir rear shock to get the kind of rear suspension performance you need. This pair of powerful rear shocks offer up unprecedented levels of heat dissipation and heat resistance thanks to their massive oil capacities and aluminum designs, making them perfectly suited to constant and extreme articulation off-road. The Piggyback reservoirs even feature ICON's Compression Damping Control Valve (CDCV) system that allows you to dial in the shocks' compression perfectly to your liking. ICON even when back to the drawing board for the 2015-2026 F150s, and carefully redesigned and tuned the valving of their VS Piggybacks for the much lighter weight of the 2004-2026 F150s over the 12th generation F150 models. Each one of these shocks bolts right on in place of your 2004-2026 F150's factory rear shocks, giving your truck a massive performance improvement in practically no time at all.

Large-Diameter Shock Body with Piggyback Reservoir

Each one of ICON's 2.5 VS Series Rear Shocks was designed from the ground up to give your 2004-2026 F150 improved response and greatly reduce fade over stock and more standard IFP replacement shocks. Each 2.5 VS Series shock has a massive 2.5" diameter body that's made out of high-quality aluminum which greatly improves heat dissipation over standard steel shocks. The large diameter of the shocks allows for a large oil capacity that's made even greater by the VS Series Piggyback reservoirs which further improve heat dissipation and resistance. The CDCV system on each reservoir consists of a dial that controls the amount of oil that flows between the reservoir and the shock body, giving you control over the compression of the entire shock. These shocks are perfect for applications and situations with extreme and consistent articulation of your truck's rear suspension and won't let you down in the most extreme applications. The shocks bolt-on right in place of stock and come with hardware and instructions.

Fitment:

2004, 2005, 2006, 2007, 2008 F150 4WD Only
2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 F150 4WD & RWD

Will not fit F150s with CCD: these shocks will not fit or function on F150s with Ford's optional Continuous Control Damping (CCD) system. Please verify whether or not your F150 is equipped with CCD before ordering.

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2015 F150

Application>2015 F150 Install time>Less than 2 hrs Difficulty>EASY My review includes information about ICON 2.5 front and rear shock units. I was completely dissatisfied with the OEM suspension bouncing all over the road, so I installed the Fox 2.0s in the rear, thinking I'd get off easy. The Foxes were much better than stock, but(for me) only accented how BAD the front struts were. I installed a set of ICON 2.5 (basic units without reservoirs)up front and LOVED them. Next, I pulled the Foxes and installed THESE ICON 2.5 CDCV units. I like a firm ride, so I'm running them at #5, but on #S they are smooth as silk. I'm told the NON-CDCV units are equivalent to a #4, so if you like a soft ride definitely go for the CDCV. My only regret is NOT getting the CDCVs up front. They say the reservoirs are strictly for off road use, but FYI the CDCV(only available on the reservoir units) enable you to select between SOFTER or HARDER than the setting of the non-adjustable units. Conclusion: It's my feeling that the F150 requires a 2.5 unit for proper control. My 150 now handles like a German sports sedan. The ride is firm, but not noisy or punishing. No more bouncing or understeer. The truck carves turns and holds a steady line throughout. Off road, it soaks up anything you can throw at it. This is the way this $50K vehicle should have come from the factory. Worth every penny for me. If you like a firm ride, you can make due with the non-CDCV units. If you like a cushy caddy ride, you'll want the CDCVs which allow you to soften the ride. Further, the rear 2.5 units ONLY come with reservoirs, so the addition of the CDCV is only another $300, A NO-BRAINER. The fronts are available in BASIC(no res.), RES or RES+CDCV. Going from BASIC to CDCV is way more $. Also be advised as per ICON Tech, while it's mechanically possible , but it's not monetarily feasible to upgrade the BASIC units to RES or RES+CDCV. It's cheaper to buy a new set. Sorry for the Long Winded Review, TomJV

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Reviewed by: Tom from NY on 4/15/2017

2015 F150 XLT

Oh my That was what was going through my head the whole ride home from the shop. I had Fox 2.0's before, put an add-a-leaf in and they aren't made for the rise in height so I decided to go all out and get these. Worth every penny. On pavement with the valve switched to S it feels like your floating, superior to the ride of the dodge ram with their fancy air suspension, and all the capability of a F-150. Switched them up to a 5 for some fast runs on logging trails and it was great, butt of the truck stays where it belongs and soaks up anything thrown at it. Now I need new brakes to compensate for how much faster I can push my truck. Still have some playing around to do with settings but I am in love with these and highly reccomend them.

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Reviewed by: g333 from MA on 5/21/2016

2010 F-150

Made a huge difference in my ride, nice and smooth and the handling so much better. Also stage 3 has the best deal on these with their price match/make an offer on them.

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Reviewed by: (Verified Buyer) Ryan Averbeck from Bloomington,MN on 7/5/2019

2016 F150 supercrew

My 2016 F150 supercrew was so stiff in the rear that the back would shudder/oscillate 3-5 cycles after hitting a large bump. This made the rear hop sideways if in a turn. Installed these while installing a 3" lift (had to modify the lower mounts to not over extend the shocks). They look great and the ride is much better. Not quite trophy truck smooth but much better than stock. The back end hopping around is gone and only very large bumps feel harsh. The rear is now slightly softer (running full soft) than the front on stock struts so may do those next.

2004-2026 F150 4WD/2009-2023 2WD ICON 2.5 VS Piggyback CDCV Rear Shocks Review Image!

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Reviewed by: Mike Marshall from Peoria Illinois on 12/27/2025

Would these create any minor lift since they are stiffer shocks than stock ones?

Asked by: John - 8/26/2022

Not really. You might see a hint of lift after you first install them until they're fully broken in and the leaf pack settles back down, but they do not offer any sort of permanent lift.

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Answer provided by: Jason@Stage3 (8/29/2022)

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What's the biggest block I can use with these shocks

Asked by: Richard - 5/22/2019

This shock can handle up to a 2" net rear lift, so you'd technically be good to use up to a 3.5" rear block, though a 3" rear block is what we'd recommend due to rake issues.

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Answer provided by: Jason@Stage3 (5/23/2019)

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What do all the different settings on the CDCV do? What is S and H?

Asked by: Will - 11/30/2018

The CDCV settings control a valve inside the shock that controls the flow of oil between the shock body and reservoir, which allows you to choose your level of compression. "S" is the softest setting. "H" is the hardest or firmest setting.

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Answer provided by: Jason@Stage3 (12/3/2018)

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I have an autospring add-a-leaf installed, these should be able to handle that without an issue correct? I probably have gained 1 1/2 inches in rear height with it.

Asked by: G333 - 5/11/2016

Yep. These shocks can handle roughly 2" of rear lift, so you're good to go with an Add-a-Leaf Kit alone. If you do decide to go with a larger rear block in the future, then you will need different shocks.

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Answer provided by: Jason@Stage3 (5/12/2016)

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2004-2026 Ford F150 4WD ICON 2.5 VS Piggyback CDCV Rear Shocks | 97720CP

Huge Improvement in Heat Dissipation and Off-Road Performance with Compression Adjustability

Large-Diameter Shock Body with Piggyback Reservoir

Would these create any minor lift since they are stiffer shocks than stock ones?

What's the biggest block I can use with these shocks

What do all the different settings on the CDCV do? What is S and H?

I have an autospring add-a-leaf installed, these should be able to handle that without an issue correct? I probably have gained 1 1/2 inches in rear height with it.

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