Fox DSC Compression Adjuster Review

How Fox DSC Dual Speed Compression Adjusters Work

Fox offers Compression Adjusters on 2.0, 2.5 and 3.0 coilover, smoothie and internal bypass shocks. 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 Adjusters combined with AccuTune Valving are a great improvement to off-road shocks you’ll be in the middle of the adjustment range, allowing you to quickly make adjustments to fine tune your ride comfort and performance. When it comes to shock tuning they will save you countless hours and greatly improve your results.

Fox DSC Shock Upgrade

How Do 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.

Fox DSC Adjuster Flow Paths

How Much Adjustment Do 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 ranges is huge and can add between 50% and 100% more low speed load depending on vehicle/tune. The high speed adjuster can add between 25% and 50% more high speed force depending on vehicle/tune.

Fox DSC Compression Adjuster Range

Fox DSC Really Is Dual Speed Compression Adjustment

The Fox Low Speed Compression Adjustment give you the ability to find the optimal trade off 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.

Fox DSC Dual Speed Compression Adjuster Low Speed Adjustment Range

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.

Fox DSC High Speed Adjustment Range


AccuTune Off-Road Engineers Valving For Fox DSC Adjusters

Fox DSC Adjusters offer excellent tuneability, but they are a fine adjustment and still require proper valving on the main piston.  By using our massive trove of data and our AccuTune engineering equations we can design our valving to put you in the middle of the useable adjustment range. Dial in the perfect ride with AccuTune Valving and DSC equipped Fox shocks.


Related Fox Shocks With DSC Adjuster:


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