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Build ten inches of controlled travel into a custom suspension
FOX 981-20-120 is a universal Performance Elite 2.0 coilover for custom suspension fabrication, with 10 inches of travel, a remote reservoir, and a 7/8-inch shaft. It is selected by dimensions, spring requirements, mounting geometry, and available clearance rather than by year-make-model fitment.
Key Features
- Ten inches of shock travel for custom long-travel suspension layouts
- Remote reservoir increases oil and nitrogen capacity
- 7/8-inch hard-chrome 4130 chromoly shaft
- Clear zinc-plated body with black anodized CNC-machined aluminum components
- Eight-port sintered iron-copper graphite high-flow piston
- PTFE-lined heat-treated spherical bearings at both mounts
- Uses 2.5-inch inside-diameter coil springs sold separately
Fitment
| Application Type | Verified Requirements |
|---|---|
| Universal custom fabrication | 26.2 in extended length; 16.18 in compressed length; 10 in travel; 1.25 in mounting width; 1/2 in mounting bolts; 2.5 in ID springs. Confirm motion ratio, spring rates, bump and droop limits, reservoir location, hose routing, and full-cycle clearance. |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | 981-20-120 |
| Series | Performance Elite 2.0 |
| Travel | 10 in |
| Extended Length | 26.2 in |
| Compressed Length | 16.18 in |
| Shaft | 7/8 in hard-chrome 4130 chromoly |
| Body Finish | Clear zinc plated |
| Mounting Width | 1.25 in |
| Mounting Bolt | 1/2 in |
| Spring Size | 2.5 in inside diameter; sold separately |
| Reservoir Hose | -8 stainless braided |
| Seal Kit | 803-04-034 |
| Quantity | One shock |
What's Included
- One Performance Elite 2.0 remote-reservoir coilover shock
- Lower spring retainer and upper preload adjuster
- Spring slider, divider, and dual-rate crossover rings
- Coil springs, mounting tabs, bolts, limit straps, and bump stops are not included
About FOX
FOX builds serviceable performance dampers for vehicle-specific and custom-fabrication applications. Its universal coilovers provide documented travel and mounting dimensions so a qualified suspension builder can engineer motion ratio, spring rate, bump travel, and reservoir placement around the complete vehicle.
Related Parts
- No internal spring or mounting component is linked because spring rates, free lengths, hardware, tabs, limit straps, and bump stops must be engineered for the completed suspension.
FAQ
What is the 981-20-120?It is one universal 2.0-inch Performance Elite remote-reservoir coilover with 10 inches of travel for a custom-fabricated suspension.
Does it have year-make-model fitment?No. Compatibility is determined by the complete suspension design, mounting dimensions, spring selection, and full-cycle clearance.
Are coil springs included?No. It uses 2.5-inch inside-diameter springs that must be selected separately for the vehicle weight, motion ratio, and intended use.
What are the extended and compressed lengths?The verified extended length is 26.2 inches and the compressed length is 16.18 inches.
What mounting hardware is required?The shock uses 1.25-inch-wide spherical-bearing mounts for 1/2-inch bolts; tabs, bolts, spacers, and chassis reinforcement are application specific.
Is the reservoir hose included?Yes. The shock assembly uses a -8 stainless braided hose between the body and remote reservoir.
Is it rebuildable?Yes. It is a serviceable performance damper, and the verified seal-kit reference is 803-04-034.
Who should install it?A qualified suspension fabricator should establish mount strength, motion ratio, spring rates, bump and droop limits, hose routing, and full-cycle clearance.
Installation Instructions
- Model the suspension through full bump, droop, steering, and articulation before welding mounts or ordering springs.
- Confirm the 26.2-inch extended length, 16.18-inch compressed length, 10-inch travel, mounting width, bolt size, and reservoir-hose envelope.
- Engineer reinforced upper and lower mounts so the shock cannot become the travel stop; use correctly sized bump stops and limit straps.
- Select compatible 2.5-inch ID springs, free lengths, and rates from measured corner weight and motion ratio, then install the supplied retainers and crossover hardware.
- Mount the reservoir where it is protected and cooled, with no hose twist, kinks, abrasion, or contact through full suspension movement.
- Torque the mounting hardware to the engineered specification, cycle the suspension without springs to verify clearance, then inspect and service the complete system at appropriate intervals.
California Proposition 65 Warning: This product can expose you to chemicals including antimony oxide and other chemicals known to the State of California to cause cancer or reproductive harm. For more information, visit www.P65Warnings.ca.gov.
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