FOX 3.0 Factory Race Series Internal Bypass Coil Over Shock w/DSC (Each)

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FOX 3.0 Factory Race Series Internal Bypass w/ DSC Coil Over Shock (Each)




Position-sensitive internal-bypass control in a coil-over body.

This is the same shock Tony runs on the Terremoto Jeep JK with the GenRight Elite suspension kit.

Also good for all racing classes that mandate a single shock per wheel.

Provides bypass damping and suspends the vehicle in a compact lightweight package.


Body Smooth bore and honed seamless steel
Body Plating Zinc plated for a long-lasting finish
Components Black anodized, CNC machined 6061-T6 billet aluminum
Piston 7075 hard-anodized high-flow aluminum piston
Valving Tunable, velocity sensitive deburred valve shims
Hose Reusable ORB O-ring port hose fittings for superior seal with remote reservoirs
Seals High-temp Viton® redundant sealing pack system with main seal, wiper seal and scraper seal
Oil JM92 Advanced Suspension Fluid for improved performance at variable temperatures
Shafts 7/8" 17-4 H900 hard chrome plated stainless steel, hard chrome plated
Bearing Spherical, PFTE-lined, heat-treated alloy steel
  • RRB (Rotating Reservoir Bridge)
  • Spring preload ring
  • Dual stage crossover ring
  • Compression valving
  • Rebound valving
  • DSC Adjuster
  • 1-1/4" mounting width spacers included
  • Shocks in stock with hoses and fittings for the GenRight Elite and Tracer suspension systems.
  • Each coil over shock from GenRight is pre-valve’d and sprung specifically for a Jeep (not a race truck or buggy like other suppliers).

SPRING Size: 3.73" I.D. True Dual Rate, (spring colors available: Silver, Orange or Black)

SHAFT Size: 7/8"

TRAVEL: 12.0", 14.0", 16.0"


How Fox DSC Dual Speed Compression Adjusters Work: 


Fox calls their adjuster a Dual Speed Compression (DSC) adjuster because it has separate knobs for low speed and high-speed adjustments. Fox DSC Compression adjuster(s) can change the valving and are a great improvement to your off-road shocks because you’ll be able to quickly make adjustment and fine tune your ride comfort and performance. When it comes to shock tuning they will save you countless hours and greatly improve your results.


How the Fox Compression Adjusters Work?


Fox compression adjusters have three flow paths: low speed free bleed, a high-speed disk stack, and a rebound check valve. The Fox Low Speed Compression circuit works by using a needle and seat to change oil flow through the free bleed path. The Fox High Speed Compression Adjuster circuit uses deflective disks to control flow. The high-speed circuit is externally adjustable and works by increasing preload on deflective disks. The rebound check valve allows oil to easily return to the shock when the shaft extends.


How Much Adjustment Do the Fox DSC Compression Adjusters Have?


Fox Compression adjusters have a substantial range of adjustment that can transform your vehicle from a Cadillac to a race car.  The Fox low speed adjustment range is huge and can add between 120% (solid axle) more low speed load depending on vehicle/tune. The high-speed adjuster can add between 30% and 60% more high speed force depending on vehicle/tune.


Fox DSC Really Is Dual Speed Compression Adjustment:


The Fox Low Speed Compression adjustment give you the ability to find the optimal tradeoff between ride, handling and bottoming control. The Fox Low Speed Compression Adjuster has a large usable range and give each click an appropriate amount of adjustment. The Fox DSC Adjuster has 9 low speed clicks. While adjustments do spill over into high speed, the percentage change is heavily weighted towards low speed.


The separate Fox High Speed Compression adjuster gives you a dedicated adjustment for tuning on whoops and high-speed hits. The adjuster has 11 clicks and offers a great range of adjustability which has almost no impact on low speed compression.


Other Benefits of Compression Adjusters:


There are many other lesser known benefits of compression adjusters that improve the performance of your shocks such as increased damping, better cooling and more consistency.


Compression adjusters are basically a second damping piston which works off the displacement of the piston rod and meters oil flow into the reservoir.  By adding a second damping piston the damping area and damping force are automatically increased. This is important for 2.0 shocks on solid axles can run out of damping force. Because the compression adjuster piston is located next to the reservoir it does a better job putting heat into the oil where it is more easily cooled. Finally, the compression adjuster piston significantly reduces the ability for the shock to cavitate and loose damping. Small amounts of oil can easily flow into the reservoir, but compression adjusters generally don’t flow large amounts of oil well, meaning they’re forced through the main piston, making it do its job.  These benefits by themselves are often worth adding a compression adjuster to your shocks.




The Fox DSC Adjusters really work and are an excellent choice if you’re changing weight, changing terrain, or want the best possible ride.


1 Review

  • 5
    Top of the Line!

    Posted by Tony P. on Jan 20th 2021

    I was looking for the best money could buy and i can tell you these are top-of-the-line! I have wheeled and raced on these shocks for 3 years and can tell you the performance is awesome! Proven by finishing ahead of 70 other purpose built 4400 Unlimited Class cars at KOH 2020.