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Walker Evans 2.5 Coilover Shock Technology - Coilovers 101

Posted in How To: Suspension Brakes on January 1, 2010
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There's no question that coilover shocks are at the top of the suspension food chain in both competitive and recreational four-wheeling. Although coilovers are pricier than standard shocks, they offer a number of performance features that keep them a cut above their little brothers, the non-coilover shock.

If you are new to the off-road scene, you may be asking yourself, "What's a coilover and what does it do?" In a nutshell, a coilover is a shock absorber with single or multiple coil springs wrapped around it that work together to suspend the vehicle and damp the ride. There are some variations in design, but a good coilover is properly engineered and built from quality materials. The best aspect of coilovers is that they are rebuildable, tunable to match the performance levels and weight of a vehicle, and able to be matched to the terrain and driving style they will be used for.

Walker Evans Racing recently released new 2.5-inch coilovers, and as with all things off-road, we couldn't wait to take a gander at them. Walker has been manufacturing race-proven coilovers for years now, and the 2.5-inch one is the company's next evolution in shock technology. The coilovers are manufactured in the U.S. and are available in 6- to 14-inch travel lengths, and every coilover is available with standard or custom valving. Walker's 2.5-inch coilovers with remote reservoirs will be available at a later date.

1. A coilover isn't the most complex component on a rig. It basically consists of an aluminum body, a top cap and rod end (body loops) with spherical bearings, a lower cap (shaft passes through), a shaft, a piston, shims, a spring adjuster/upper seat, a dual rate slider, and a stop ring (not shown). However, the keys to a good off-road coilover are quality and choosing the proper valving and spring rate for the desired performance.
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Walker Evans Racing
Riverside, CA 92516

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