Switch Suspension 2150 W. Broadway Rd. #102 Mesa, Az 85202
Phone: 800-928-1984
Hours: 8am-5pm Monday thru Friday

Chevrolet Silverado 2500HD/3500HD 2001-2019 Fox Performance Rear Remote Reservoir 2.5 - 4" Lift


Product Overview


Fits: Chevrolet Silverado / GMC Sierra 2500HD, 3500HD 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019

US-based Designer and Manufacturer of Premium OE Replacement and Proprietary Performance Suspension, Steering, Lift Systems and Long Travel Kits for Trucks and UTVs.

Chevrolet Silverado / GMC Sierra 2500HD/3500HD 2001-2018 Fox Performance Rear Remote Reservoir

2001-Up Chevy/GMC 2500-3500HD Truck (Sold as single)

Select from:

FOX-PSRR-4R-GM8L - Rear shock 2.5-4" lift Fox Performance Series Reservoir Aluminum Body


The aluminum bodied 2.0 Performance Series Reservoir smooth body shock delivers FOX's industry leading and race dominating performance in an affordable, hassle-free bolt on package. Its heat reducing design includes a metal impacted clear anodized aluminum shock body that dissipates heat faster than a conventional steel body shock. Its external reservoir allows for increase oil and nitrogen capacity while delivering striking race look. The included black anodized reservoir mounting clamp and other components are CNC machined from 6061-T6 aluminum. The race developed high flow damping piston matched with application specific vavling provides the 2.0 Performance Series Reservoir shock a predicable ride quality capable of handling the roughest road conditions.


• Body - 2.0" Metal impacted 6061-T6 aluminum will resist rust over time
• Body Plating - Clear-anodized for a durable finish
• External Reservoir - 2.0" Smooth bore 6061-T6 Aluminum is hard anodized
• Components - Black-anodized, CNC-machined 6061-T6 billet aluminum
• Shaft - 5/8" hard chrome plated heat-treated alloy steel
• Piston - Race-developed high-flow piston design
• Valving - Application specific valving to maximize performance
• Seals -Redundant sealing pack system main seal, wiper seal, scraper seal
• Oil - JM92 Advanced Suspension Fluid for improved performance at variable temperatures
• Bushings - Quiet nitrile rubber allows for increased suspension articulation
• Mounting - Direct replacement for stock and aftermarket lifts kits


Brand (Manufacturer) Info

Cognito is an industry leader in developing, designing, and manufacturing top-quality steering and chassis components. The company is considered one of America's leading manufacturers of top-of-the-line aftermarket performance products for trucks.

Started in 2001 by Justin Lambert, Cognito has gained notoriety because of Lambert's designs and attention to detail. Its steering solutions give new life to trucks, and its high-end and massively popular shocks, lift kits, and accessories are testaments of the company’s commitment to integrity, quality, and performance.

Warranty Information

Cognito Motorsports, Inc. hereinafter “Cognito,” warrants to the original retail purchaser, that its suspension products are free from workmanship and material defects for as long as the purchaser owns the vehicle on which the product(s) were originally installed. This warranty will be void if any modifications are made to the components, including alterations to the surface finish, i.e.; painting, powder coating, plating, and/or welding, or if they are improperly installed. Cognito truck suspension products are not designed nor intended to be installed on “competition” vehicles used in race applications, stunt or exhibition purposes that are outside of the intended operating conditions specified by the manufacturer. Racing and competition are defined as any contests between two or more vehicles; or vehicles competing individually on off road circuits in timed events (whether or not such contests are for an award or prize). This warranty does not include coverage for police or taxi vehicles, race vehicles, or vehicles used for government or commercial purposes, and the warranty does not cover Cognito products sold outside of the USA. Cognito’s obligations under this warranty are specified and applied at its sole discretion, and warranty coverage is limited to repair or replacement of the defective product(s). Any and all costs of removal, installation or reinstallation; freight charges, incidental or consequential damages associated with the covered products are expressly excluded from this warranty. The following items are exempt from Cognito limited warranty coverage: bushings, bump stops, tie-rod ends (and Heim joints) and limiting straps. These parts are “consumables” and designed to wear as a normal part of their duty cycle, therefore they are not considered defective when worn. The aforementioned products are warrantied separately against defects in workmanship, for 60 days from the date of purchase. As a condition of warranty validation, respective Cognito suspension components must be installed as a complete system (not combined with non-Cognito hardware or ancillary parts). Any substitutions or omission of required components will void the warranty. Some minor cosmetic wear and imperfections may occur to parts during shipping, which is not covered under this warranty. This limited warranty does not apply to any components that have been subject to collision damage, negligence, alteration, abuse, or misuse, and coverage does not extend to products manufactured by third-party companies. We reserve the right to supersede, discontinue, or change the design, finish, part number and/or application of Cognito parts when deemed necessary, without notice.


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