Specialized 1x Front Derailleur Mount Cover Press-Fit Seat Tube Insert

Specialized Factory Replacement Front Derailleur Mount Cover 1x Drivetrain Press-Fit Cosmetic Seat Tube Insert

This Specialized factory replacement press-fit cover is designed to cleanly conceal unused front derailleur mounting points on frames configured for 1x drivetrains. By covering the exposed threaded braze-on inserts in the seat tube, it restores a clean, streamlined, factory-correct appearance—without tools, bolts, or adhesives.

Ideal for riders running modern 1x road or gravel setups, this OEM insert improves aesthetics and maintains the bike’s original design intent.

Features & Benefits

• Genuine Specialized OEM cosmetic replacement

• Designed specifically for 1x drivetrain configurations

• Covers unused front derailleur braze-on mount holes

• Tool-free press-fit installation

• Clean, low-profile, factory-correct appearance

• Helps maintain smooth aerodynamics and frame finish

• Lightweight and discreet design

Function

• Press-fit cosmetic seat tube insert

• Conceals exposed threaded front derailleur mounting holes

• Intended only for frames not using a front derailleur

OEM Compatibility

(Grouped & De-Duplicated)

Tarmac SL8

• Tarmac SL8 Comp, Expert, Pro, Frameset — 2024–2026

• S-Works Tarmac SL8 (all completes & framesets) — 2024–2026

• Limited Editions & Team Framesets — 2024–2026

Tarmac SL7

• Tarmac SL7 Comp, Expert, Pro, Sport, Frameset — 2021–2026

• S-Works Tarmac SL7 (all completes & framesets) — 2021–2023

• Special Editions (Sagan, Speed of Light, LTD) — 2021–2023

Aethos / Aethos 2

• Aethos Comp, Expert, Pro, Sport, Frameset — 2021–2025

• S-Works Aethos (all completes & framesets) — 2021–2026

• Aethos 2 (all completes & framesets) — 2026

Allez Sprint

• Allez Sprint Frameset & Complete Bikes — 2021–2026

Installation Notes

• Press-fit design — no tools required

• Cosmetic part only (no structural function)

• Verify frame compatibility before installation

• Not compatible with bikes using a front derailleur

What’s Included

• (1) Specialized OEM Front Derailleur Mount Cover
  (As supplied by Specialized)

Why Use OEM?

Using genuine Specialized cosmetic hardware ensures:

• Proper fit and finish

• Factory-correct appearance

• No rattles, gaps, or improvised solutions

• Maintained resale value and professional presentation

A simple, factory-correct solution for riders running 1x drivetrains who want a clean, aerodynamic, and OEM-level finish on their Specialized performance road frames.