UTV SHOCK REBUILD SERVICE
In-House Shock Rebuild, Re-Valve & Service for Fox, King, Elka & Walker Evans
MST Motorsports provides in-house UTV shock rebuild service in St George, Washington, and across Southern Utah — We rebuild Fox, King, Elka, and Walker Evans shocks — the major brands found on Polaris RZR, Can-Am Maverick, Kawasaki KRX, and other powersports platforms. The whole process happens here, on our own bench: teardown, inspection, reseal, re-valve, nitrogen recharge, dyno-checked assembly. Re-valving and the suspension setup that follows are done by the same techs, in the same building where the truck side of the shop works.
Shocks are the most critical component of your UTV's suspension system. They control how your machine responds to every bump, rock, dip, and landing. When shock oil breaks down, seals wear, or internal components degrade, your ride quality suffers, handling becomes unpredictable, and the risk of component damage increases. In Southern Utah's desert conditions — especially at Sand Hollow — shock degradation happens faster than most riders realize.
What a difference.
Brent
Google review — shock rebuild customer
Complete Shock Rebuild Process
Our in-house shock rebuild process includes:
- Disassembly & Inspection — Complete disassembly with inspection of shaft condition, body bore, and all internal components
- Seal & Bearing Replacement — Fresh seals, bushings, and bearings to restore leak-free operation
- Internal Component Evaluation — Assessment of piston, shim stacks, and valving components for wear or damage
- Oil Replacement — Fresh shock oil at the proper viscosity for your application and conditions
- Bladder/IFP Inspection — Inspection and replacement of internal floating pistons and bladders as needed
- Reassembly & Nitrogen Charge — Precision reassembly with proper nitrogen pressure for gas-charged shocks
- Testing — Stroke testing to verify consistent, leak-free operation
Shock Re-Valve & Custom Tuning
Re-valving changes the internal shim stacks that control how fluid flows through the shock — adjusting compression and rebound damping characteristics to match your specific riding conditions, vehicle weight, and performance goals.
Factory shock valving is designed for average conditions and average riders. If you ride primarily in Sand Hollow's deep sand and high-speed desert, you need different valving than someone who mostly rock crawls at low speeds. Re-valving during a rebuild is the most cost-effective way to transform your machine's ride quality and handling without purchasing entirely new shocks.
We set up valving based on your specific machine, riding terrain, and performance objectives.
Brands We Rebuild In-House
Fox Racing Shox
- • Fox 2.0 Performance Series
- • Fox 2.5 Factory Series
- • Fox 3.0 Factory Series
- • Fox Live Valve (service)
- • Fox Podium and internal bypass
King Shocks
- • King 2.0 Race Series
- • King 2.5 Race Series
- • King 3.0 Race Series
- • King OEM Performance
- • King coilover and bypass
Elka Suspension
- • Elka Stage 3
- • Elka Stage 4
- • Elka Stage 5
- • Elka Legacy Series
Walker Evans Racing
- • Walker Evans Velocity Series
- • Walker Evans Racing Series
- • Walker Evans needle valve shocks
Desert Conditions & Shock Maintenance
Southern Utah desert conditions are among the harshest environments for shock absorbers. Fine sand infiltrates shaft seals, accelerating wear and introducing contamination to the shock oil. High ambient temperatures reduce oil viscosity, and extreme temperature cycling stresses seals. Washboard desert roads create sustained high-frequency shaft movement that generates heat and accelerates oil breakdown.
Regular shock service — including oil changes and seal inspection — is the most cost-effective way to maintain ride quality and extend the life of expensive shock absorbers. We recommend 40–60 hour service intervals for machines used at Sand Hollow and in desert conditions near St George and Washington, Utah.
Signs Your Shocks Need Service
Shock degradation is gradual, and most riders adapt to the changing feel without realizing how much performance they've lost. Watch for a ride that feels floaty or wallowy, excessive nose dive under braking, body roll in corners, bottoming out on bumps that used to feel controlled, visible oil weeping on the shock body, harsh ride over whoops, or a noticeable reduction in rebound control.
On UTVs and side-by-sides, degraded shocks are especially noticeable at speed — the rear end kicks out, the front pushes through turns, and the suspension feels harsh without actually controlling the vehicle. If ride quality has changed or the shocks have more than 40–60 hours of hard off-road use, it's time for an inspection. A shock that used to feel plush now feeling harsh is a rebuild signal.
Ride Quality & Vehicle Control
Shocks do not just affect comfort — they control how the vehicle handles, how the tires stay planted, and how well the suspension absorbs terrain. A truck with worn shocks tows poorly, brakes longer, and wears tires faster. A UTV with tired shocks loses control in whoops, bottoms out in the dunes, and puts more stress on every other suspension component.
Keeping shocks in working condition protects vehicle safety, performance, and component life. Regular service costs less than replacing shocks, and less than repairing the damage worn shocks cause elsewhere in the suspension.
Alongside Fox, King, Elka and Walker Evans, we also rebuild and re-valve Icon Vehicle Dynamics and Falcon Shocks shocks for UTVs, trucks and Jeeps on the same bench. We install and service suspension components from Shock Therapy, Zollinger Racing and Geiser Performance on the same machines.
Most side-by-sides arrive here on a trailer behind a truck.
Same shop, same building: brakes, tires, alignments and diesel work on the truck you towed it with.
Auto repair and maintenanceFrequently Asked Questions
Do you rebuild shocks in-house or send them out?
We rebuild Fox, King, Elka and Walker Evans shocks in-house at our Washington UT facility, which keeps quality control in our hands and the turnaround quick.
Should I rebuild my UTV shocks or buy new ones?
For shocks from Fox, King, Elka, or Walker Evans, rebuilding is almost always the better value. A full rebuild restores OEM performance for a fraction of replacement cost, and we rebuild Fox, King, Elka and Walker Evans shocks in-house.
How often should I rebuild my UTV shocks?
For UTVs used in Southern Utah desert conditions, we recommend shock service every 40–60 hours of operation. Deep sand, fine dust, and washboard desert trails accelerate seal wear and contaminate shock oil faster than in cleaner conditions. Machines ridden hard at Sand Hollow may benefit from even more frequent service.
What shock brands does MST Motorsports rebuild?
We perform in-house shock rebuilds for Fox, King, Elka, and Walker Evans — the major brands used on powersports platforms. Our service covers both reservoir and non-reservoir shocks, including bypass shocks and coilover configurations.
What does a shock rebuild include?
A full rebuild includes complete disassembly, shaft and body inspection, seal and bearing replacement, fresh shock oil, bladder inspection/replacement, internal component evaluation, and reassembly to manufacturer specifications. We also perform nitrogen charging on gas-pressurized shocks.
Can you re-valve my shocks for Sand Hollow riding?
Yes. Re-valving changes the internal shim stacks to modify compression and rebound damping characteristics. For Sand Hollow riders, we typically set up valving for high-speed desert stability while maintaining good low-speed compliance for rocky trail sections.
What shock upgrades do you recommend for Sand Hollow?
For Sand Hollow desert riding, we recommend Fox 2.5 or King 2.5 remote reservoir shocks with valving tuned for high-speed sand whoops and dune launches. We can re-valve your existing shocks or help spec a new setup.
How much does a UTV shock rebuild cost?
Shock rebuild pricing depends on the shock type (standard vs. reservoir), brand, and whether re-valving is included. Basic rebuilds are typically less expensive than purchasing new shocks and restore performance to like-new or better. Call 435-256-8899 for current pricing on your specific shocks.
Ready to Get Started?
Call (435) 256-8899 or . Serving Washington, St George, Hurricane, and all of Southern Utah.