RockShox Assembly Tools
RockShox

RockShox Assembly Tools

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OEM RockShox 35mm dust and oil seal installation tool (SRAM TL-FST-S35-A1). Machined installer ensures even, damage-free seal seating for reliable fork service.

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Product Details

Overview & Technology

RockShox 35mm Seal Installation Tool (SRAM TL-FST-S35-A1 / MPN 11.4015.206.000) is a purpose-built tool for seating 35mm outer-diameter dust and oil seals on suspension forks. Designed to replicate factory installation, it reduces the risk of pinched or misaligned seals that lead to leaks and accelerated wear. Precision construction—this installer is machined to a consistent diameter with a chamfered lead edge so seals slide on smoothly and sit squarely in the fork leg. Lightweight and compact (shipping dims 5.3" x 2" x 2", weight 0.25 lb), it’s a durable workshop staple for both home mechanics and pro techs.

Key Features & Benefits

Purpose-built sealing performance. The 35mm profile matches common RockShox seal OD to ensure an even press-in force across the entire lip, preventing folds, tears and uneven seating. • OEM compatibility: RockShox / SRAM model TL-FST-S35-A1 — designed for RockShox dust and oil seals. • Accurate fit: Consistent diameter and chamfered edge for low-friction installation. • Durable machining: Hard-wearing metal construction stands up to repeated shop use.

Fit & Compatibility

This tool is sized specifically for seals with a 35mm outer diameter. It’s ideal for RockShox forks and other brands that use 35mm dust or oil seals. Before ordering, confirm the outer diameter of your fork seals—most service manuals list seal OD, or you can measure the seal with calipers. Use considerations: Works with sealed dust and oil seals; not intended as a hammer or pry tool. For best results, pair the installer with a flat, even block or a press fixture and use gentle, even taps with a soft mallet or a bench vise to control pressure during installation.

Who It's For

This tool is aimed at mountain-bike mechanics who perform routine fork service: bike shop techs, race teams, and confident home mechanics. If you service RockShox forks regularly or maintain a fleet of bikes, this installer speeds up rebuilds while protecting expensive seals and stanchions. It’s also a smart addition to a suspension service kit for anyone who wants repeatable, professional results without risking seal damage from improvised tools.

Key Features

  • ✓ Exact 35mm diameter for factory-correct seal seating
  • ✓ SRAM / RockShox OEM model TL-FST-S35-A1 compatibility
  • ✓ Chamfered lead edge prevents pinching and tearing
  • ✓ CNC-style machined construction for consistent performance
  • ✓ Compact, lightweight tool fits any workshop or tool roll
  • ✓ Speeds up service and reduces seal replacement costs

Specifications

Misc Seal installation tool 35mm

Product Identifiers

Vendor Item # 11.4015.206.000
UPC 710845312380

Frequently Asked Questions

What does this tool fit?

This installer is sized for seals with a 35mm outer diameter—commonly used on many RockShox fork models. Always verify the seal OD in your fork service manual or by measuring the seal before use.

Can I use this tool on non-RockShox forks?

Yes—if the fork uses 35mm outer-diameter dust or oil seals the tool will work. Compatibility is based on seal diameter rather than brand, but check clearances and seal design before installing.

How do I use the seal installation tool correctly?

Place the seal squarely on the tool, align it with the fork leg seat, then apply even pressure using a soft-faced mallet, arbor press, or gentle vise pressure. The chamfered edge helps the seal slide into place; avoid heavy blows to prevent damage.

What material is the tool made from?

The installer is made from a hard-wearing machined metal alloy with a precision finish to resist wear and produce repeatable installations. Its durable construction is suited to frequent shop use.

Can it install both dust and oil seals?

Yes. The tool is designed for both dust and oil seals that share a 35mm outer diameter. Using the correct size avoids deforming either seal during assembly.

Is this tool part of an official RockShox service kit?

This is an OEM RockShox / SRAM tool (model TL-FST-S35-A1 / MPN 11.4015.206.000) intended for professional and home servicing of compatible forks.

Buying Guide

When choosing a seal installation tool, match the tool diameter to the outer diameter of the seal—an exact fit ensures even seating without rolling or deforming the seal. Favor purpose-built installers over improvised methods (screwdrivers, pipes) to avoid damage to seals and stanchions. Consider durability and workshop frequency: a machined metal installer is a better long-term investment than soft or plastic drivers if you service forks regularly. If you work on multiple fork sizes, look for a set of drivers covering common seal ODs or pair this 35mm tool with other sizes.

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