Shock Guide

Desert Racing & Ultra 4

Choosing the right shock for desert racing or Ultra 4 comes down to vehicle weight, speed, suspension travel, packaging room, budget, and how hard the vehicle will be driven. A lightweight trail buggy and a full-size desert truck should not be treated the same, even if both are using coilovers. At Wide Open Design, we look at shocks as part of the entire suspension system, not just a part number. This guide breaks down the most common shock setups, explaining where they excel, where they start to run out of performance, and when it makes sense to step up.

Level 1: 2.0 Remote Reservoir Coilover Shocks

A 2.0 remote reservoir coilover is a strong baseline shock for a trail rig, light buggy, or entry-level desert and Ultra4-style build. The coilover supports the vehicle’s weight, sets ride height, and controls suspension movement, while the remote reservoir adds oil volume and better heat control than an emulsion shock. This makes it a good single-shock setup for lighter vehicles that see trail use, rough terrain, and some faster riding. It also gives the build a solid starting point if the customer plans to step into a coilover and bypass package later.

Level 2: 2.5 Remote Reservoir Coilover Shocks

A 2.5 remote reservoir coilover is a performance-minded single-shock setup for desert, Ultra4-style use, and fast trail riding. The larger 2.5 shock body gives more oil volume, better heat capacity, and more damping control than a basic 2.0 shock package. This shock works well on its own for trail rigs, light racing, and faster recreational use, while also being a strong foundation for a future coilover and bypass package. For drivers who want a serious all-around shock without stepping into a dual-shock setup yet, the 2.5 remote reservoir coilover is one of the best starting points.

Level 3: 2.0 Emulsion Coilover + 2.5 Bypass

A 2.0 emulsion coilover paired with a 2.5 bypass shock is a WOD-curated setup for light buggies, Jeeps, and fast trail rigs that need more control than a basic coilover-only package. In this setup, the 2.0 emulsion coilover handles spring support and ride height, while the 2.5 bypass shock adds extra damping control through whoops, chop, hard hits, and rough trail sections. This pairing works well when the chassis already has room for a second shock and the driver wants more tuning control without jumping into a larger or more expensive coilover package. For desert and Ultra4-style use, this is a strong step-up setup for lighter vehicles being pushed harder than a basic trail rig.

Level 4: 2.5 Emulsion Coilover + 2.5 Bypass

A 2.5 emulsion coilover paired with a 2.5 bypass shock is a strong dual-shock setup for desert, Ultra4-style use, and fast trail rigs that need more control through rough terrain. In this setup, the coilover handles spring support and ride height while the bypass shock adds extra damping control through whoops, chop, hard hits, and rough trail sections. This can be a great choice when the vehicle already has room for a second shock and is being pushed beyond a basic coilover-only package. For drivers who want more tuning control without moving into a full 3.0 shock package, a 2.5 coilover with a 2.5 bypass is a solid performance step.

Level 5: 2.5 DRT Internal Bypass Coilover

A 2.5 DRT internal bypass coilover is a strong Ultra4 shock option when the vehicle needs bypass-style control without packaging a separate external bypass shock beside the coilover. The DRT keeps the spring support, ride height, and position-sensitive damping control inside one cleaner shock package. This makes it a great choice for tight chassis packaging, cleaner installs, and less external shock noise compared to a traditional bypass setup. The DRT is a strong step up when you want more control through rocks, chop, ledges, and faster rough sections without moving into a full dual-shock package.

Level 6: 3.0 Remote Reservoir Coilover

A 3.0 remote reservoir coilover is a serious performance shock for desert, Ultra4, high-horsepower buggies, full-size builds, and dedicated off-road vehicles that need more damping capacity than a 2.5 shock package. The larger 3.0 shock body adds oil volume, heat control, and impact resistance for faster terrain, heavier vehicles, and repeated hard hits. As a single shock setup, it can provide strong performance without the added packaging and tuning complexity of a coilover plus bypass package. For desert racing and Ultra4-style use, this is the step up when the vehicle is being pushed hard but the build is not moving into a full race-ready dual-shock setup yet.

Level 7: 2.5 Remote Reservoir Coilover + 2.5 Bypass

A 2.5 remote reservoir coilover paired with a 2.5 bypass shock is a race-ready shock package for desert racing, Ultra4, fast trail rigs, and dedicated off-road builds that need serious control. In this setup, the coilover supports vehicle weight, sets ride height, and provides the main damping, while the bypass shock adds zone-specific tuning for whoops, chop, hard hits, G-outs, and rough terrain. This combination gives the driver more control, better heat management, and more tuning range than a single shock setup. For many Jeeps, buggies, and lightweight to midweight race builds, this is one of the best all-around performance packages before moving into larger 3.0 shock systems.

Level 8: 2.5 Remote Reservoir Coilover + 3.0 Bypass

A 2.5 remote reservoir coilover paired with a 3.0 bypass shock is THE high-end desert and Ultra4 shock package for vehicles that need more bypass control, heat capacity, and damping support than a standard 2.5/2.5 setup. In this combination, the 2.5 coilover handles spring support, ride height, and base damping, while the larger 3.0 bypass adds serious zone-specific control for whoops, chop, G-outs, hard hits, and rough race terrain. This setup works well for dedicated desert and Ultra4 builds with the room to package it and when the vehicle is being pushed harder, carrying more speed, or needing more bottom-out control.