The FOX 2.5 Performance Series HTO is a bolt-on shock designed with position-sensitive technology, vehicle-specific valving, and larger pistons to improve on- and off-road performance.
Its Type II anodized aluminum body efficiently dissipates heat and resists corrosion. The 2.5-inch shock body features an internal floating piston (IFP) that separates shock oil from high-pressure nitrogen to optimize damping.
Hydraulic Top Out (HTO) technology provides usable position-sensitive rebound damping on and off pavement. HTO reduces harsh top-outs and increases comfort by forcing shock oil through a secondary shim stack to slow shock shaft speed.
*Bolt-on design fits many applications; particularly beneficial when using heavier, aggressive tires or when the vehicle is lifted beyond OEM height. Verify vehicle-specific fitment before installation.
| Brand | Ridefox |
| Series | Performance Series HTO 2.5 |
| Shock Type | Smooth Body |
| Installation side | Rear |
| Lift Height, inch | 4-6" |
| Type Adjusters | Non Adjustable |
| Reservoir | No |
| Tank Type | Internal Floating Piston (IFP) |
| Body Diameter (in) | 2.5 |
| Material | Aluminum |
| Quantity | Single |
| Box Height | 4.3 in |
| Box Width | 4.4 in |
| Box Length | 25.5 in |
| Box Weight | 7.1 lbs |
| Submodel | 4WD, RWD |
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Fitment
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2011||Chevrolet||Silverado 2500, 2012||Chevrolet||Silverado 2500, 2013||Chevrolet||Silverado 2500, 2014||Chevrolet||Silverado 2500, 2015||Chevrolet||Silverado 2500, 2016||Chevrolet||Silverado 2500, 2017||Chevrolet||Silverado 2500, 2018||Chevrolet||Silverado 2500, 2019||Chevrolet||Silverado 2500, 2011||Chevrolet||Silverado 3500, 2012||Chevrolet||Silverado 3500, 2013||Chevrolet||Silverado 3500, 2014||Chevrolet||Silverado 3500, 2015||Chevrolet||Silverado 3500, 2016||Chevrolet||Silverado 3500, 2017||Chevrolet||Silverado 3500, 2018||Chevrolet||Silverado 3500, 2019||Chevrolet||Silverado 3500, 2020||Chevrolet||Silverado 3500, 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, 2011||GMC||Sierra 3500, 2012||GMC||Sierra 3500, 2013||GMC||Sierra 3500, 2014||GMC||Sierra 3500, 2015||GMC||Sierra 3500, 2016||GMC||Sierra 3500, 2017||GMC||Sierra 3500, 2018||GMC||Sierra 3500, 2019||GMC||Sierra 3500, 2021||Chevrolet||Silverado 2500, 2021||Chevrolet||Silverado 3500, 2021||GMC||Sierra 2500, 2021||GMC||Sierra 3500, 2020||Chevrolet||Silverado 2500, 2020||GMC||Sierra 2500, 2020||GMC||Sierra 3500, 2022||Chevrolet||Silverado 2500, 2022||Chevrolet||Silverado 3500, 2022||GMC||Sierra 2500, 2022||GMC||Sierra 3500, 2023||Chevrolet||Silverado 2500, 2023||Chevrolet||Silverado 3500, 2023||GMC||Sierra 2500, 2023||GMC||Sierra 3500, 2024||Chevrolet||Silverado 2500, 2024||GMC||Sierra 2500, 2024||Chevrolet||Silverado 3500, 2024||GMC||Sierra 3500, 2025||GMC||Sierra 2500, 2025||Chevrolet||Silverado 3500, 2025||GMC||Sierra 3500, 2025||Chevrolet||Silverado 2500
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