If you own a mountain bike equipped with a DVO suspension, you may have come across the part number 920100-01. This small but critical component plays a key role in the performance and longevity of your rear shock or fork. In this guide, we’ll explain exactly what part 920100-01 is, which DVO models it fits, how to install it properly, and where to source a genuine replacement. Whether you’re planning a rebuild or just need to identify a worn part, this article will give you the practical details you need.
What Is DVO Suspension Part 920100-01?
Part number 920100-01 refers to the seal head assembly used in select DVO rear shocks and forks. The seal head, also known as the damper shaft seal, is the component that seals the damper shaft where it exits the shock or fork body. It prevents oil from leaking out and keeps dirt and debris from entering the damping system. Without a properly functioning seal head, your suspension will lose performance, develop leaks, and eventually fail.
The 920100-01 assembly typically includes:
- The seal head body (often aluminum or plastic)
- A main wiper seal
- A backup ring or O-ring
- An internal guide bushing
This part is designed to withstand high pressures and repetitive motion, making it a wear item that needs periodic replacement during suspension overhauls.
Key Specifications
- Part Number: 920100-01
- Component Type: Seal head / damper shaft seal assembly
- Brand: DVO Suspension
- Material: Engineered polymer and nitrile rubber seals
- Application: Fits select DVO rear shocks and forks (see compatibility below)
- Service Interval: Typically every 50–100 hours of riding or annually
Compatibility: Which DVO Models Use Part 920100-01?
Part 920100-01 is commonly used in the following DVO suspension products:
Rear Shocks
- DVO Topaz Air (all generation models)
- DVO Topaz Coil (some early generations)
- DVO Jade X (certain production runs)
- DVO Jade Coil (check year and revision)
Forks
- DVO Onyx SC (single-crown, some model years)
- DVO Onyx D1 (dual-crown, limited compatibility)
- DVO Emerald (older models)
Important: Not every DVO shock or fork uses the same seal head. Always verify the part number against your specific suspension model and year. DVO has changed revisions over time, and using the wrong seal head can cause poor performance or damage. The best way to confirm compatibility is to remove your existing seal head and compare its dimensions and design to the 920100-01 images or consult your suspension’s service manual.
How to Identify If You Need This Part
Signs that your seal head needs replacement include:
- Visible oil leakage around the damper shaft
- Dust or grime on the shaft (indicating the wiper seal is failing)
- Reduced damping performance or harshness
- Stiction or sticking sensation during compression
If you notice any of these, it’s time to inspect the seal head and order a replacement.
Installation Guide for DVO Suspension Part 920100-01
Replacing the seal head is an intermediate-level service task. If you’re not comfortable working with suspension internals, it’s best to have a professional bike shop do it. However, if you have the tools and experience, here’s a step-by-step outline.
Tools You’ll Need
- Suspension pump or shock pump
- Shock/fork oil of the correct weight (check DVO specs)
- Seal head driver or a socket/pvc pipe of the right diameter
- Pick tool for removing old seals
- Clean rags and rubbing alcohol
- Torque wrench (if applicable)
- Service manual for your specific suspension model
Step-by-Step Process
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Depressurize and Drain: Remove all air from the shock or fork using the pump. Drain the existing oil by removing the air valve and, if possible, the damper shaft. Follow the manufacturer’s bleed procedure.
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Remove the Old Seal Head: Disassemble the shock or fork to access the damper shaft. Slide off the old seal head using a pick or by gently prying from the shaft. Be careful not to scratch the shaft surface.
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Inspect the Shaft and Housing: Clean the shaft with a lint-free cloth and check for scratches or wear. Also clean the seal head bore inside the fork leg or shock body. If there is any damage to the shaft, the new seal head may not seal properly.
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Install the New Seal Head: Apply a thin layer of suspension oil to the new seal’s lip and the shaft. Slide the seal head over the shaft, oriented correctly (usually with the wiper lip facing outward). Use a seal head driver to press it fully into place until it seats against the internal snap ring or shoulder. Do not use excessive force.
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Reassemble and Refill: Follow the service manual to reassemble the rest of the suspension components. Fill with the recommended volume and type of oil. Purge any air from the damper circuit by cycling the shaft slowly.
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Pressure Test: Recharge the air chamber (if applicable) to the recommended pressure. Compress the suspension several times to seat the seal. Check for leaks around the shaft after 5–10 cycles.
Pro Tips
- Always replace the seal head together with the other seals (like the dirt wiper) and O-rings in the damper circuit for best performance.
- Use genuine DVO parts. Aftermarket seal heads may not have the correct cross-section or material, leading to early failure.
- Clean your suspension shaft after every ride to extend seal life.
Where to Buy DVO Suspension Part 920100-01
Genuine DVO suspension parts are available through authorized dealers, DVO’s official website, and select online specialty retailers like Jenson USA, Competitive Cyclist, or Worldwide Cyclery. You can also check local bike shops that carry DVO products. When ordering, confirm the part number exactly: 920100-01.
Price Range
Expect to pay around $10–$20 for this seal head assembly. The low cost makes it a worthwhile investment to maintain your suspension’s performance.
Part Number Variations
DVO occasionally updates part numbers. If 920100-01 is out of stock, you may find a superseded version like 920100-02 or 920100-03. Check the compatibility notes or contact DVO support directly.
Frequently Asked Questions
Can I use part 920100-01 on a DVO Diamond fork?
No, the DVO Diamond usually uses a different seal head. Always verify fitment for your specific model.
How often should I replace the seal head?
Every 50–100 hours of riding or once a year, whichever comes first. If you ride in wet or dusty conditions, replace it more frequently.
What happens if I don’t replace a worn seal head?
Oil leakage will worsen, leading to loss of damping performance, potential contamination of the damper internals, and eventual suspension failure.
Final Recommendation
For any DVO suspension owner with a Topaz Air, Topaz Coil, Jade X, Onyx SC, or Emerald that needs seal head replacement, the DVO Suspension part 920100-01 is the correct OEM component. It is inexpensive, easy to install if you have basic mechanical skills, and essential for restoring your suspension’s function and leak-free operation. Before ordering, always double-check compatibility with your specific model year by comparing the old part or consulting DVO’s documentation. Maintaining your suspension with genuine parts like the 920100-01 seal head will keep your ride smooth and reliable season after season.