Description
The FOX® 983-02-158 is a 2.0 ATS (Adjustable Through Shaft) steering stabilizer with axle-mount top clamp, engineered for 2013-2026 Ram 2500 and 3500 4WD trucks.
IMPORTANT: This is the axle-mount version of FOX®’s ATS stabilizer for the current-generation Ram 2500 (2014-2026) and 3500 (2013-2026) platform. It is not the same part as FOX® 983-02-147, which uses a tie-rod clamp mount and is built for the earlier 2008-2013 Ram 2500/3500 chassis. The two are not interchangeable — confirm your truck’s generation and stock tie-rod/axle configuration before ordering.
Conventional steering stabilizers develop a push-or-pull force as the shaft displaces oil unevenly when turning in one direction, which is why many trucks run dual opposing stabilizers to cancel it out. The FOX® ATS architecture eliminates that shaft fluid displacement through the stabilizer’s full travel in both directions, delivering consistent damping from a single, bolt-on unit instead of a dual-stabilizer setup.
An external piggyback reservoir adds fluid capacity and uses an Internal Floating Piston (IFP) to separate the shock oil from the nitrogen gas charge, eliminating cavitation under hard use. An external adjuster provides 24 clicks of damping adjustment so the feel can be tailored to driving style and setup.
The stabilizer body is 2.0″ metal-impacted 6061-T6 aluminum with a clear-anodized finish for corrosion resistance, and the black-anodized, CNC-machined 6061-T6 billet aluminum components are matched to a 5/8″ hard chrome-plated, heat-treated alloy steel shaft and a redundant sealing pack. Application-specific mounting hardware is included, and the unit is backed by FOX®’s suspension product warranty.
- Fits 2014-2026 Ram 2500 and 2013-2026 Ram 3500 4WD trucks; axle-mount top clamp configuration
- ATS (Adjustable Through Shaft) architecture eliminates unidirectional shaft fluid displacement
- External piggyback reservoir with Internal Floating Piston (IFP) separates oil from nitrogen charge
- External adjuster with 24 clicks of damping adjustment
- 2.0″ metal-impacted 6061-T6 aluminum body, clear-anodized finish
- 5/8″ hard chrome-plated, heat-treated alloy steel shaft
- Redundant sealing pack system: main seal, wiper seal, scraper seal
- Backed by FOX®’s suspension product warranty
- Sold individually
| Part Number | 983-02-158 |
| Series | Factory Race |
| Travel | 8.2″ |
| Body | 2.0″ metal-impacted 6061-T6 aluminum, clear-anodized |
| Reservoir | External reservoir separates shock oil from high-pressure nitrogen |
| Components | Black-anodized, CNC-machined 6061-T6 billet aluminum |
| Shaft | 5/8″ hard chrome-plated, heat-treated alloy steel |
| Piston | Race-developed high-flow piston |
| Seals | Redundant sealing pack: main, wiper, scraper |
| Extended Length | 23.27″ |
| Compressed Length | 15.07″ |
| Top Mount | Axle Mount |
| Bottom Mount | Eyelet |
| What’s Included | (1) Steering stabilizer, application-specific mounting hardware |
| Warranty | FOX® suspension product warranty |
This stabilizer covers 2014-2026 Ram 2500 and 2013-2026 Ram 3500 4WD trucks with an axle-mount top clamp. FOX® also builds part number 983-02-147 with a tie-rod clamp mount for the earlier 2008-2013 Ram 2500/3500 generation — confirm your truck’s model year and mounting configuration before ordering, as the two are not interchangeable.