What Is UTV Shock Tuning and Revalving?

You've probably heard experienced UTV riders talk about getting their shocks "tuned" or "revalved" — but what does that actually mean, and do you need it? Here's a plain-English explanation of what shock tuning is, how it works, and when it's worth doing.

How UTV Shocks Work — The Basics

A shock absorber controls the speed at which your suspension moves. When you hit a bump, your suspension compresses — this is the compression stroke. When the bump passes, your suspension extends back to its normal position — this is the rebound stroke. The shock's job is to control how fast both of those movements happen.

Inside every shock is a piston with small holes and check valves called shims. As the shock compresses or rebounds, oil is forced through these holes and past these shims. The resistance created by the oil moving through those passages is what we call damping. More resistance = stiffer damping. Less resistance = softer damping.

What Is Revalving?

Revalving is the process of opening a shock, removing the piston assembly, and changing the shim stack — the arrangement of thin metal washers that controls how the oil flows through the piston. By changing the size, thickness, and arrangement of these shims, a suspension technician can dramatically change how the shock behaves across its entire range of motion.

This is different from simply adjusting the external knobs on an adjustable shock. External adjusters change damping globally or within a limited range. Revalving changes the fundamental character of how the shock responds at low shaft speeds versus high shaft speeds — small bumps versus big hits.

What Is Custom Shock Tuning?

Custom shock tuning combines revalving with spring rate selection and shock setup to create a complete suspension package optimized for a specific rider. A proper custom tune takes into account:

• Vehicle make and model — shock travel, geometry, and leverage ratio all affect the correct damping specification
• Rider and vehicle weight — a 150-pound solo rider needs completely different valving than a 250-pound rider with a full crew cab and gear
• Terrain — desert high-speed riding requires different damping than technical rock crawling or sand dunes
• Riding style — an aggressive high-speed rider needs more high-speed compression damping than a casual trail rider
• Spring rates — spring rate and damping must be matched to work together correctly

Signs You Need a Shock Tune

Your shocks may benefit from a custom tune if:

• You've significantly changed your vehicle's weight (added a roof, cage, stereo, spare tires)
• You're significantly heavier or lighter than the average rider the factory tuned for
• You primarily ride terrain very different from the factory's intended use case
• Your shocks feel harsh on small bumps but blow through on big hits
• Your shocks feel soft and wallowy even with correct nitrogen pressure
• You're upgrading to a new shock platform and want it set up correctly from day one

What to Expect from a Professional Shock Tune

At Schmidty Racing Suspensions, our shock tuning process starts with a conversation — we want to understand your machine, your weight, your terrain, and what you're unhappy with about your current setup. From there we'll make recommendations on spring rates and valving changes and give you an honest assessment of what to expect.

A properly tuned suspension transforms how a UTV feels. Riders who've experienced a custom tune consistently say the same thing: they wish they'd done it sooner.

Schedule Your Custom Shock Tune

Schmidty Racing Suspensions offers professional shock rebuild, revalving, and custom tuning services for UTVs, ATVs, trucks, and off-road vehicles at our Mesa, AZ shop. We service Can-Am, Polaris, Honda, Kawasaki, Yamaha, and Ford Raptor platforms.

Contact us at (602) 920-1337 or view our shock service options to get started. You can also send us a message with details about your machine and we'll get back to you with recommendations.