Fox DHX Factory 2Pos-Adjust Shock - 978-01-045

The Fox DHX Factory 2Pos-Adjust Shock delivers coil performance for the trail and beyond. This sho...

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Leisure Lakes BikesFox DHX Factory 2Pos-Adjust Shock 2022 Trunnion Orange/Black
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Product Information

Full details

The Fox DHX Factory 2Pos-Adjust Shock is designed for mountain bike enthusiasts seeking the consistent, supple feel of a coil-sprung suspension system for aggressive trail and enduro riding. This shock provides excellent small-bump sensitivity and mid-stroke support through its high-flow main piston, though riders should note that coil shocks generally require careful spring rate selection to achieve optimal performance compared to air shocks.

All features

Model Part Number978-01-045
BrandFox Suspension

Extended Product Information

FAQs

Does this shock come with a coil spring included?

Coil springs are typically sold separately to ensure riders can select the correct rate for their weight.

Can I use this shock on a Trunnion mount frame?

The product line includes specific Trunnion-mount variants, so verify your frame requirements before purchase.

How often should I service the DHX Factory?

Fox recommends a full service at least once a year or every 125 riding hours, whichever comes first.

What is the benefit of the hydraulic top-out feature?

It provides a controlled deceleration at the end of the rebound stroke, preventing the shock from clunking when the wheel leaves the ground.

Is the 2-position lever a full lockout?

No, it is a firm mode circuit that adds significant compression damping for climbing efficiency, but it allows for some movement.

Troubleshooting

Excessive noise during shock compression

Check for correct spring installation; ensure the spring is seated securely in the preload collar and the spring retainer.

Shock feels harsh on small bumps

Verify that your compression settings are not set too high and confirm that your spring rate is not too stiff for your rider weight.

Bottoming out too easily

Ensure your spring rate is correct; if it is, consider increasing low-speed compression or checking the condition of the MCU bumper.

Pros and Cons

Pros

  • Supple coil-spring traction and small-bump compliance
  • Easy tool-free compression adjustments
  • Reduced damper noise for a quieter ride
  • Durable design with integrated scuff guard
  • Highly adjustable with clear detents on the preload collar

Cons

  • Increased weight compared to air-sprung alternatives
  • Requires manual selection of the correct spring rate for the rider
  • Less progression adjustment options compared to air-can spacers

Setup, Compatibility & Care

Proper setup starts with choosing the correct spring rate for your body weight and frame leverage ratio. Once the spring is installed, use the detented preload collar to set your sag accurately.

Compatibility Note: Ensure you are using the correct mount configuration for your frame, as Fox offers standard and Trunnion variations for this model. The shock body features a full-diameter spring retainer, which is compatible with standard coil springs of the appropriate inner diameter.

Care Instructions:

  • Regularly clean the shock shaft with a soft cloth to prevent seal abrasion.
  • Periodically inspect the scuff guard and replace if heavily worn.
  • Perform a full damper service according to the official Fox service intervals to maintain peak performance and oil integrity.

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