FOX TOP CAP SOCKET 26MM
The Professional Standard for Fork Service.
The Fox Top Cap Socket is a specialized shop tool designed for the removal and installation of suspension top caps without the risk of damage. Traditional sockets often have a "lead-in" chamfer (a beveled edge) that reduces the surface area contact on the extremely low-profile aluminum top caps found on Fox forks. This 26mm socket is precision-machined with zero-chamfer, ensuring it grips the entire height of the hex nut to prevent rounding or marring the delicate finish.
Whether you are performing a routine "lowers" service, adjusting your air spring volume spacers, or conducting a full damper rebuild, this tool is essential. It is sized specifically for Fox 32 series forks and certain older 34 series models. Using this dedicated tool ensures your fork maintains its factory-fresh look and mechanical integrity, preventing the unsightly scratches caused by adjustable wrenches or standard sockets.
Key Performance Features
Zero-Chamfer Design: Specifically engineered to provide 100% engagement with the low-profile hex of Fox top caps, eliminating the risk of slipping or rounding off the edges.
Precision Machined Aluminum: Crafted from high-strength aluminum, which is durable enough for professional use but softer than steel, providing an extra layer of protection for your fork’s anodized finish.
Knurled Edge: Features a textured outer surface for easy hand-starting, allowing you to feel the threads engage to prevent cross-threading before applying a wrench.
Square Drive Compatibility: Features a standard 3/8" square drive, making it compatible with most common torque wrenches and socket handles.
Protects Resale Value: By preventing tool marks and scratches on the top caps, this tool helps maintain the "like-new" aesthetic of your suspension, which is critical for resale value.
Compact Low-Profile: Designed to be short and stable, reducing the leverage that can cause a tool to tip and slip during high-torque removal.
Technical Specifications
| Feature | Specification |
| Size | 26mm |
| Compatibility | Fox 32 Series (and specific 34 models) |
| Drive Size | 3/8" Square Drive |
| Material | 6061-T6 Aluminum (Anodized) |
| Edge Profile | Flat / Zero-Chamfer |
| Part Number | 398-00-702 |
✅ Why This IS For You
The DIY Enthusiast: If you take pride in servicing your own suspension, this tool is the difference between a professional result and a damaged top cap.
Volume Spacer Adjusters: If you frequently open your air spring to tune your fork's progression, this tool makes the process fast, safe, and repeatable.
The Perfectionist: Ideal for riders who cannot stand seeing tool marks or "burrs" on their high-end suspension components.
❌ Why This May NOT be for you
Oversized Stanchions: This is a 26mm socket. If you are servicing a Fox 34 (modern), 36, 38, or 40, you will require a larger size (typically 28mm, 30mm, or 32mm depending on the model).
Occasional Users: If you only service your fork once every few years, your local bike shop can perform this task; however, the cost of the tool is often less than a single labor charge for a top-cap replacement.
BFC Pro Tip
Even with a zero-chamfer socket, the best way to protect your fork is to ensure the top cap is completely free of dirt and grit before fitting the tool. For an absolute "concours" finish, place a single layer of thin plastic wrap (cling film) over the top cap before pressing the socket on—this acts as a buffer and ensures zero metal-to-metal friction marks. When reinstalling, always check the specific torque value for your fork model (usually around 24Nm), and remember that the air spring must be completely deflated before you attempt to loosen the top cap!






