Fox Suspension DHX Factory 2Pos-Adjust Shock - 978-01-041

The Fox DHX Factory 2Pos-Adjust Shock delivers premium coil-sprung performance for trail riding. F...

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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 Suspension DHX Factory 2Pos-Adjust Shock is designed for mountain bikers seeking premium coil-sprung performance and a plush, magic-carpet ride feel on aggressive trails. This high-performance damper excels at smoothing out varied terrain through its advanced chassis and high-flow piston, though it is important to note that the coil spring is sold separately and must be purchased to complete the setup.

All features

Model Part Number978-01-041
BrandFox Suspension

Extended Product Information

FAQs

Is the coil spring included with this shock?

No, the coil spring must be purchased separately based on your weight and riding style.

Can I use this shock on any mountain bike?

It is compatible with frames designed for the specific eye-to-eye and stroke length of the model you purchased. Always verify your frame's shock requirements.

How do I adjust the low-speed compression?

Use the tool-free dial on the reservoir to select one of the 12 positions for your desired damping support.

What is the purpose of the 2-position lever?

The lever allows you to switch between 'Open' for descending and 'Firm' for climbing efficiency.

How often should I service this shock?

Service intervals depend on riding intensity, but a standard full-service is recommended annually or every 125 hours of use.

Troubleshooting

Shock feels too harsh at the end of the stroke

Ensure you are using the correct spring rate; if the spring is correct, the MCU bumper is working as intended to prevent harsh bottom-outs.

Excessive pedal bob while climbing

Engage the 2-position firm mode lever and ensure the low-speed compression adjuster is set to a higher damping value.

Noisy rebound performance

Check that the rebound adjuster is fully seated and the shock is free of trapped air bubbles; consult a suspension technician if noise persists.

Pros and Cons

Pros

  • Plush, consistent coil-spring feel
  • Easy-to-access tool-free adjustments
  • Reliable hydraulic top-out for smooth handling
  • Highly tunable with 12-position compression
  • Durable construction with noise-reduction technology

Cons

  • Coil spring not included
  • Heavier than air-sprung alternatives
  • Requires careful spring rate selection for optimal performance

Setup, Compatibility & Care

  1. Spring Selection: Ensure you purchase a compatible spring (sold separately) based on your weight and frame leverage ratio.
  2. Installation: Secure the shock using the correct mounting hardware for your specific frame model.
  3. Sag Setting: Use the preload collar to set sag. Do not exceed the maximum number of turns recommended in your frame's manual.
  4. Compression Tuning: Start in the middle position (6 clicks) and adjust based on trail feel.
  5. Maintenance: Keep the shock body clean of grit. Inspect the damper regularly for oil leaks and ensure the preload collar detents are clean and debris-free.

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