Specialized Stumpjumper Enduro Downtube Protector Nut M4 OEM

Specialized Downtube Protector Mounting Nut

Factory OEM | Steel | M4 × 0.7 | S220500005

The Specialized Factory Replacement Downtube Protector Mounting Nut is a genuine OEM steel nut used to secure compatible Specialized custom downtube protectors to the frame.

This small but model-specific replacement part features an M4 × 0.7 thread and measures 4.5mm wide. It is sold individually and is used across numerous Specialized Stumpjumper, Stumpjumper EVO, Enduro, and related factory applications.

Ideal for replacing a lost, damaged, stripped, or corroded original downtube protector mounting nut.

Available from Stage 21 Bikes, your trusted source for hard-to-find Specialized OEM replacement parts.

Key Features

• Genuine Specialized factory OEM replacement part
• Mounting nut for compatible downtube frame protectors
• Steel construction
• M4 × 0.7 thread
• 4.5mm width
• Sold individually
• Direct replacement for the original factory mounting nut
• Used across multiple Stumpjumper, Stumpjumper EVO, and Enduro platforms

Specifications

Primary Applications

Factory applications include select:

• 2018–2024 Specialized Stumpjumper
• 2019–2024 Specialized Stumpjumper EVO
• 2020–2025 Specialized Enduro

Because this mounting nut is used with specific frame protector designs, verify MPN S220500005 before ordering.

OEM Compatibility

2025

• Enduro Pro
• Enduro Comp

2024

• Stumpjumper EVO Pro T-Type – SRAM X0 AXS / FOX Factory
• Stumpjumper EVO Expert – SRAM GX AXS / FOX Performance Elite
• S-Works Stumpjumper EVO T-Type – SRAM X0 AXS / FOX Factory
• S-Works Stumpjumper EVO Frameset
• S-Works Enduro Frameset
• Enduro Expert
• Enduro Comp

2023

• Stumpjumper EVO Pro
• Stumpjumper EVO LTD
• Stumpjumper EVO Frameset
• Stumpjumper EVO Expert
• Stumpjumper EVO Comp
• S-Works Stumpjumper EVO Frameset
• S-Works Stumpjumper EVO
• S-Works Enduro Frameset
• Enduro Expert
• Enduro Comp

2022

• Stumpjumper EVO Expert
• Stumpjumper EVO Pro
• Stumpjumper EVO Frameset
• Stumpjumper EVO Expert RS
• Stumpjumper EVO Comp
• S-Works Stumpjumper EVO Frameset
• S-Works Stumpjumper EVO
• S-Works Enduro LTD
• S-Works Enduro Frameset
• S-Works Enduro
• Enduro LTD
• Enduro Frameset
• Enduro Expert
• Enduro Comp

2021

• Stumpjumper EVO Pro
• Stumpjumper EVO LTD
• Stumpjumper EVO Expert
• Stumpjumper EVO Comp
• S-Works Stumpjumper EVO Frame
• S-Works Stumpjumper EVO
• S-Works Enduro
• Enduro Frameset
• Enduro Expert
• Enduro Comp
• S-Works Enduro Frame

2020

• Stumpjumper Troy Lee Designs EVO 29 Frameset – Limited Edition
• Stumpjumper Troy Lee Designs EVO 27.5 Frameset – Limited Edition
• Stumpjumper ST LTD Downieville Carbon 29
• Stumpjumper Pemberton LTD Edition 29 / 27.5
• Stumpjumper Expert Carbon 29 / 27.5
• Stumpjumper EVO Comp Carbon 29 / 27.5
• Stumpjumper EVO Carbon Frameset 29 / 27.5
• S-Works Stumpjumper SRAM AXS 29
• S-Works Stumpjumper 29 / 27.5
• S-Works Stumpjumper Frameset 29 / 27.5
• Men's Stumpjumper EVO Pro 29 / 27.5
• S-Works Enduro
• S-Works Enduro Frameset
• Enduro Expert
• Enduro Elite

2019

• Women's Stumpjumper ST Comp Carbon 29
• Women's Stumpjumper Comp Carbon 27.5
• Stumpjumper Custom 29 / 27.5
• S-Works Stumpjumper ST 29 / 27.5
• S-Works Stumpjumper 29 / 27.5
• S-Works Stumpjumper Frameset 29 / 27.5
• Men's Stumpjumper ST Expert 29 / 27.5
• Men's Stumpjumper ST Comp Carbon 29 / 27.5
• Men's Stumpjumper Pro 29
• Men's Stumpjumper Expert 29 / 27.5
• Men's Stumpjumper EVO Pro 29 / 27.5
• Men's Stumpjumper Comp Carbon 29 / 27.5

2018

• Women's Stumpjumper ST Comp Carbon 29
• Women's Stumpjumper Comp Carbon 27.5
• Men's Stumpjumper ST Expert 29 / 27.5
• Men's Stumpjumper ST Comp Carbon 29 / 27.5
• Men's Stumpjumper Expert 29 / 27.5
• Men's Stumpjumper Comp Carbon 29 / 27.5
• Men's S-Works Stumpjumper ST 29 / 27.5
• Men's S-Works Stumpjumper 29 / 27.5
• Men's S-Works Stumpjumper Frame 29 / 27.5

Compatibility Notes

• This listing is for one mounting nut only.
• Downtube protector and mounting bolts are not included.
• Designed for compatible Specialized custom downtube protectors using this specific mounting interface.
• Confirm the original hardware uses an M4 × 0.7 thread.
• Specialized frame-protection hardware varies by frame generation and model.
• Matching the bike name alone is not always sufficient; verify Specialized MPN S220500005 whenever possible.

Why Choose Genuine Specialized Replacement Hardware?

Frame-protection hardware is often specific to the protector and frame interface. Using the correct factory hardware helps ensure the downtube protector remains securely mounted without substituting an incorrectly sized generic fastener.

Genuine Specialized S220500005 provides the original M4 × 0.7, 4.5mm-wide steel mounting nut specified for compatible Specialized downtube protectors.

Stage 21 Bikes is proud to carry genuine factory replacement parts to help keep your Specialized properly maintained and riding at its best.