The SDI Terrain Master 2.1 rear shocks are CFMOTO shocks for the 2025+ UForce U10 Pro and U10 XL Pro, replacing the rear factory shocks with adjustable piggyback-reservoir shocks. They suit U10 owners who load the bed or tow and want a more controlled rear ride on rough ground.
SDI says the typical UTV leaves the factory with low-end emulsion shocks that are over-sprung, and built the Terrain Master 2.1 as a passive, adjustable replacement for standard-travel machines. This listing is the rear position only (SDI part STM-MA-2551007-R); the front shocks and the complete Terrain Master 2.1 set for the UForce U10 are listed separately.
If you are comparing aftermarket UTV shocks, the Terrain Master 2.1 is SDI suspension built as a UTV shocks upgrade for stock-travel machines like the CFMOTO UForce U10 Pro. Compared with basic replacement UTV shock absorbers, these side-by-side shocks add real compression and preload adjustment, the main difference between adjustable SxS shocks like these and stock-style replacements. As UTV rear shocks, they bolt into the factory mounts. If you want adjustable UTV shocks rather than a stock-style UTV rear shock, this is the SDI option for the U10.
Key Features
- Large bore compression adjuster for optimized frequency response and adjustment range
- Billet aluminum T6 high-flow pistons for low opening forces and sensitive frequency response
- Low-friction piggyback reservoir
- Race-style quick-adjust preload ring
- Internal components machined from high-strength aluminum and anodized to reduce oil reactivity, with no plastic inside the shock
- Induction-hardened shafts with hard chrome coating for resistance to pitting and wear
- Super high-tensile lightweight springs, barrel formed for bow resistance
- PTFE-lined 28 mm spherical bearings with sealed spacers
- 3-piece fully rebuildable seal head for quick maintenance
- Ships with SDI Zero Fade Fluid
Built To Solve: CFMOTO UForce U10 Pro Rear Sag And Harsh Ride
- Rear end that squats or bottoms with a loaded bed or trailer
- Harsh, bouncy rear ride over ruts and washboard
- No adjustable rear compression damping on the factory shocks
- Worn or leaking rear shocks that need replacing anyway
Best For: CFMOTO UForce U10 Pro And U10 XL Pro Owners
- 2025+ UForce U10 Pro, U10 Pro Highland, U10 XL Pro and U10 XL Pro Highland owners
- Farm, ranch and work riders who carry weight in the bed
- Owners who want rear compression they can set for load or comfort
- Riders finishing a front-shock upgrade with matching rear shocks
Specifications
- Product line: SDI Terrain Master 2.1 (TM2.1), designed for standard-travel UTVs
- Position: rear (installs in the factory rear shock mounts with stock hardware)
- Included: SDI Terrain Master 2.1 rear shock assembly, part STM-MA-2551007-R. SDI does not publish a per-box shock count for this rear-only part; contact us to confirm before ordering
- Reservoir: piggyback, mounted with reservoirs up and adjusters facing the rear of the vehicle and out
- Shock body: 46 mm (SDI lists replacement body 46 mm x 312 mm for the CF Moto rear, driver and passenger)
- Spring length: 14 in; maximum preload 1.5 in (40 mm)
- Rear preload per SDI manual: 0.375 in (2-seat), 0.75 in (4-seat)
- Ride height per SDI manual: 12.25-14.25 in, measured on 29 in tires
- Compression adjuster: 1-5 clicks heavy load, 6-10 sportier, 11-15 comfort (counted out from fully clockwise)
- Bearings: PTFE-lined 28 mm spherical with sealed spacers
- Shock fluid: SDI Zero Fade Fluid
- Installation manual: SDI CFMOTO U10 Terrain Master 2.1 manual (front and rear), available with this listing
- Manufacturer Part Number: STM-MA-2551007-R
Fitment
- CFMOTO UForce U10 Pro (2025-2026)
- CFMOTO UForce U10 Pro Highland (2025-2026)
- CFMOTO UForce U10 XL Pro (2025-2026)
- CFMOTO UForce U10 XL Pro Highland (2025-2026)
SDI lists the Terrain Master 2.1 as fitting the 2025+ CFMOTO UForce U10. These shocks are not for the UForce 1000, 800 or 600, which are different machines. Fitment is not guaranteed on models, trims or years not listed; confirm your exact model before ordering.
FAQ
Will these rear shocks help my UForce U10 Pro carry a load?
That is what the adjuster is for. SDI recommends 1-5 clicks of compression for heavy loads, and preload can be raised up to 1.5 in to restore ride height.
Do these fit the CFMOTO UForce 1000?
No. They are for the 2025+ UForce U10 Pro and U10 XL Pro family, including Highland trims. The UForce 1000 is a different machine.
Which U10 trims are confirmed?
UForce U10 Pro, U10 Pro Highland, U10 XL Pro and U10 XL Pro Highland, 2025 and 2026 model years.
How do I set rear preload on a UForce U10?
SDI's manual lists 0.375 in of rear preload for two-seat machines and 0.75 in for four-seat (XL), on a 14 in spring. Measure the unloaded spring and subtract it from 14 in.
Is installation bolt-on?
Yes. Remove the lower then upper shock bolts, fit the Terrain Master shock with reservoirs up and adjusters facing rearward and out, and reinstall factory hardware with blue Loctite at factory torque.
How is this different from the complete Terrain Master 2.1 U10 kit?
This listing is the rear position only. The complete SDI Terrain Master 2.1 set for the UForce U10 Pro covers front and rear in one order.
Why SDI
SDI (Suspension Direct) designs and develops the Terrain Master 2.1 in the US as a passive, adjustable shock for standard-travel utility side-by-sides, replacing factory emulsion shocks that SDI describes as over-sprung. Every Terrain Master 2.1 is fully rebuildable, so it can be serviced instead of thrown away. Dunes 2 Dezert SXS ships SDI shocks nationwide.
Complete Your CFMOTO UForce U10 Pro Suspension Upgrade
Confirm your U10 trim and year in the fitment list, then add the SDI Terrain Master 2.1 rear shocks. Add the matching SDI front shocks or the complete set for a balanced machine, and check A-arm bushings and ball joints while the suspension is apart.
