DT Swiss RWS Specialized Road Rear Thru-Axle 12x142 166mm

DT Swiss RWS Rear Thru-Axle for Specialized Road & Gravel Bikes

Factory Replacement | 12x142mm | 166mm | M12 × 1.0 | S170200002

The DT Swiss RWS Rear Thru-Axle is a factory replacement rear axle used across a wide range of Specialized disc-brake road and gravel bikes with 12x142mm rear hub spacing.

Featuring the DT Swiss Ratchet Wheelmount System (RWS), the axle uses an adjustable-position lever that allows the wheel to be securely clamped while positioning the lever for proper frame clearance and a clean finished appearance.

With a 166mm overall length and M12 × 1.0 thread pitch, this axle is used on compatible Specialized Tarmac, Roubaix, Diverge, Crux, Venge, and related road platforms.

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

Key Features

• DT Swiss RWS factory replacement rear thru-axle
• Used on compatible Specialized road and gravel bikes
• 12x142mm rear hub spacing
• 166mm overall axle length
• M12 × 1.0 thread pitch
• DT Swiss Ratchet Wheelmount System
• Adjustable-position lever
• Tool-free wheel removal and installation
• Designed for disc-brake frames
• Suitable as a replacement for lost, damaged, or worn original axles
• Specialized MPN S170200002

Specifications

DT Swiss RWS System

The Ratchet Wheelmount System replaces a conventional fixed thru-axle handle with an adjustable lever mechanism.

This allows the axle to be tightened securely and then the lever position adjusted independently for:

• Frame clearance
• Clean lever orientation
• Easier access
• Tool-free wheel removal

OEM Compatibility

2027

• S-Works Roubaix SL8 Frameset – FACT 12r Carbon
• S-Works Roubaix SL8 – Warranty Frame
• Roubaix SL8 Sport – Shimano 105
• Roubaix SL8 Pro – SRAM Force AXS
• Roubaix SL8 Expert – SRAM Force AXS
• Roubaix SL8 Comp – Shimano 105 Di2
• Roubaix SL8 Comp – SRAM Rival AXS
• Roubaix SL8 10R – Warranty Frame
• Roubaix SL8 – Shimano Tiagra

2026

• S-Works Roubaix SL8 – Warranty Frame
• S-Works Crux Frameset – FACT 12r Carbon
• S-Works Crux – SRAM RED XPLR
• Roubaix SL8 Sport – Shimano 105
• Roubaix SL8 Pro – SRAM Force AXS
• Roubaix SL8 Expert – Shimano Ultegra Di2
• Roubaix SL8 Comp – Shimano 105 Di2
• Roubaix SL8 Comp – SRAM Rival AXS
• Roubaix SL8 10R – Warranty Frame
• Roubaix SL8 – Shimano Tiagra
• Diverge 3 Alloy – Shimano CUES
• Crux Pro – SRAM Force XPLR AXS
• Crux Frameset – FACT 10r Carbon
• Crux Expert – SRAM Rival XPLR AXS
• Crux Comp – Shimano GRX

2025

• S-Works Roubaix SL8 – SRAM RED AXS
• S-Works Roubaix SL8 Frameset – FACT 12r Carbon
• S-Works Roubaix SL8 – Warranty Frame
• S-Works Roubaix SL8 – Shimano Dura-Ace Di2
• S-Works Crux LTD – SRAM RED XPLR
• S-Works Crux Frameset – FACT 12r Carbon
• S-Works Crux – Warranty Frame
• S-Works Crux – SRAM RED XPLR
• Roubaix SL8 Sport – Shimano 105
• Roubaix SL8 Sport – SRAM Apex
• Roubaix SL8 Pro – Shimano Ultegra Di2
• Roubaix SL8 Expert – SRAM Rival eTap AXS
• Roubaix SL8 Comp – Shimano 105 Di2
• Roubaix SL8 10R – Warranty Frame
• Roubaix SL8 – Shimano Tiagra
• Diverge Sport Carbon – Shimano GRX
• Diverge STR Comp – Shimano GRX
• Diverge Expert Carbon – SRAM Rival eTap AXS / GX Eagle AXS
• Diverge E5 Elite – Shimano GRX
• Diverge E5 – Shimano Claris
• Diverge Comp E5 – SRAM Apex
• Diverge Comp Carbon – SRAM Apex eTap AXS
• Diverge 9R – Warranty Frame
• Crux Pro – SRAM Force XPLR eTap AXS
• Crux Frameset – FACT 10r Carbon
• Crux Expert – SRAM Rival XPLR eTap AXS
• Crux Comp – Shimano GRX

2024

• S-Works Roubaix SL8 LTD – SRAM RED AXS
• S-Works Roubaix SL8 Frameset – FACT 12r Carbon
• S-Works Roubaix SL8 – SRAM RED AXS
• S-Works Roubaix – Warranty Frame
• S-Works Diverge STR Frameset – FACT 11r Carbon
• S-Works Diverge STR – Warranty Frame
• S-Works Diverge STR – SRAM RED eTap AXS / XX1 Eagle AXS
• S-Works Diverge STR
• S-Works Crux Frameset
• S-Works Crux – Warranty Frame
• S-Works Crux – SRAM RED XPLR eTap AXS
• Roubaix SL8 Sport – Shimano 105
• Roubaix SL8 Sport – SRAM Apex XPLR AXS
• Roubaix SL8 Pro
• Roubaix SL8 Pro – Warranty Frame
• Roubaix SL8 Expert – SRAM Rival eTap AXS
• Roubaix SL8 Comp – Shimano 105
• Roubaix SL8 – Shimano Tiagra
• Diverge Sport Carbon – Shimano GRX
• Diverge Sport Carbon
• Diverge STR Pro – SRAM Force eTap AXS / X01 Eagle AXS
• Diverge STR Expert – SRAM Rival eTap AXS / GX Eagle AXS
• Diverge STR Comp – Shimano GRX
• Diverge STR Comp
• Diverge Pro Carbon – Warranty Frame
• Diverge Frameset – FACT 9r Carbon
• Diverge Expert Carbon – SRAM Rival eTap AXS / GX Eagle AXS
• Diverge Elite E5
• Diverge E5
• Diverge Comp E5 – SRAM Apex
• Diverge Comp Carbon – SRAM Apex eTap AXS
• Crux Pro – SRAM Force XPLR eTap AXS
• Crux Frameset
• Crux Expert – SRAM Rival XPLR eTap AXS
• Crux Comp – Shimano GRX

2023

• Tarmac SL6 Sport – Shimano 105
• Tarmac SL6 Sport
• Tarmac SL6 – Shimano Tiagra
• S-Works Roubaix – Shimano Dura-Ace Di2
• S-Works Roubaix – Warranty Frame
• S-Works Diverge STR Frameset – FACT 11r Carbon
• S-Works Diverge STR – Warranty Frame
• S-Works Diverge STR – SRAM RED eTap AXS / XX1 Eagle AXS
• S-Works Diverge – Warranty Frame
• S-Works Crux Frameset – FACT 12r Carbon
• S-Works Crux – SRAM RED XPLR eTap AXS
• Roubaix Sport
• Roubaix Expert
• Roubaix Expert – Warranty Frame
• Roubaix Comp – SRAM Rival eTap AXS
• Diverge Sport Carbon – SRAM Apex
• Diverge STR Pro – SRAM Force eTap AXS / X01 Eagle AXS
• Diverge STR Expert – SRAM Rival eTap AXS / GX Eagle AXS
• Diverge Pro Carbon – Warranty Frame
• Diverge Frameset – FACT 9r Carbon
• Diverge Expert E5 EVO
• Diverge Expert Carbon – SRAM Rival eTap AXS / GX Eagle AXS
• Diverge Elite E5 – Shimano GRX
• Diverge E5 EVO Frameset
• Diverge E5 – Shimano Claris
• Diverge Comp E5 – SRAM Apex
• Diverge Comp Carbon – Shimano GRX
• Crux Pro – SRAM Force XPLR eTap AXS
• Crux Frameset
• Crux Expert – SRAM Rival XPLR eTap AXS
• Crux Comp – SRAM Rival

2022

• Tarmac SL7 Pro – SRAM Force eTap AXS
• Tarmac SL7 Frameset
• Tarmac SL7 Expert – Shimano Ultegra Di2
• Tarmac SL7 Comp – SRAM Rival eTap AXS
• Tarmac SL7 10R – Warranty Frame
• Tarmac SL6 Sport – Shimano 105
• Tarmac SL6 – Shimano Tiagra
• S-Works Tarmac SL7 Frameset – Sagan
• S-Works Tarmac SL7 Ready to Paint Frameset
• S-Works Tarmac SL7 Frameset – Speed of Light Collection
• S-Works Tarmac SL7 Frameset – Sagan Collection: Disruption
• S-Works Tarmac SL7 Frameset – FACT 12r Carbon
• S-Works Tarmac SL7 – Speed of Light Collection
• S-Works Tarmac SL7 – Shimano Dura-Ace Di2
• S-Works Tarmac SL7 – SRAM RED eTap AXS
• S-Works Roubaix – Shimano Dura-Ace Di2
• S-Works Roubaix Team Frameset
• S-Works Roubaix – Warranty Frame
• S-Works Diverge Frameset – FACT 11r Carbon
• S-Works Diverge – Warranty Frame
• S-Works Diverge – SRAM RED eTap AXS / XX1 Eagle AXS
• S-Works Crux Frameset – FACT 12r Carbon
• S-Works Crux
• Roubaix Sport – Shimano 105
• Roubaix Pro – SRAM Force eTap AXS
• Roubaix Expert – Warranty Frame
• Roubaix Expert – Shimano Ultegra Di2
• Roubaix Comp – SRAM Rival eTap AXS
• Roubaix – Shimano Tiagra
• Diverge Sport Carbon – SRAM Apex
• Diverge Pro Carbon – Warranty Frame
• Diverge Pro Carbon – SRAM Force eTap AXS / X01 Eagle AXS
• Diverge Expert E5 EVO – SRAM Rival / GX Eagle
• Diverge Expert Carbon – SRAM Rival eTap AXS
• Diverge Elite E5 – Shimano GRX
• Diverge E5 EVO Frameset
• Diverge E5 – Shimano Claris
• Diverge Comp E5 – SRAM Apex
• Diverge Comp Carbon – SRAM Rival
• Diverge 9r Frameset
• Crux Pro – SRAM Force XPLR eTap AXS
• Crux Frameset
• Crux Expert – SRAM Rival XPLR eTap AXS
• Crux Comp – SRAM Rival

2021

• Tarmac SL7 Pro – Ultegra Di2
• Tarmac SL7 Pro – SRAM Force eTap AXS 1x
• Tarmac SL7 Frameset
• Tarmac SL7 Expert – Ultegra Di2
• Tarmac SL7 Expert
• Tarmac SL6 Sport
• Tarmac SL6 Comp
• Tarmac SL6 – Shimano Tiagra
• S-Works Venge Frameset – Sagan Collection: Deconstructivism
• S-Works Venge Frameset
• S-Works Tarmac SL7 Frameset – Sagan Collection
• S-Works Tarmac SL7 Frameset – Celebration
• S-Works Tarmac SL7 Frameset
• S-Works Tarmac SL7 – SRAM RED eTap AXS
• S-Works Tarmac SL7 – Dura-Ace Di2
• S-Works Tarmac SL6 Frameset – Sagan Collection Deconstructivism
• S-Works Roubaix – Team
• S-Works Roubaix – SRAM RED eTap AXS
• S-Works Roubaix Frameset
• S-Works Roubaix – Sagan Collection
• S-Works Diverge Frameset
• S-Works Diverge
• S-Works Crux Frameset
• Roubaix Sport
• Roubaix Pro
• Roubaix Expert
• Roubaix Comp
• Roubaix
• Diverge Sport Carbon
• Diverge Pro Carbon – Campagnolo LTD
• Diverge Pro Carbon
• Diverge Expert E5 EVO
• Diverge Expert Carbon
• Diverge Elite E5
• Diverge Comp E5 EVO
• Diverge Comp E5
• Diverge Comp Carbon
• Diverge Base E5
• Diverge Base Carbon
• Crux Pro
• Crux Comp
• Crux

2020

• Venge Pro – SRAM eTap
• Venge Pro
• Tarmac SL6 Disc Sport
• Tarmac SL6 Disc Expert
• Tarmac SL6 Disc Comp – Ultegra Di2
• Tarmac SL6 Disc Comp
• Tarmac SL6 Disc
• Tarmac Pro Disc – SRAM eTap
• S-Works Venge Frameset – Sagan Collection Mirror LTD
• S-Works Venge Frameset – Sagan 7x Limited Edition
• S-Works Venge Frameset
• S-Works Venge Disc – SRAM RED eTap AXS
• S-Works Venge Di2 – Sagan Collection LTD
• S-Works Venge
• S-Works Tarmac SL6 Disc Frameset – Deceuninck–Quick-Step LTD
• S-Works Tarmac SL6 Disc Frameset
• S-Works Tarmac SL6 Disc – Dura-Ace Di2
• S-Works Tarmac SL6 – SRAM RED eTap AXS
• S-Works Tarmac Disc – Sagan Collection Overexposed LTD
• S-Works Tarmac Disc Frameset – Sagan Collection Mirror LTD
• S-Works Roubaix Frameset – Sagan Collection
• S-Works Roubaix Frameset
• S-Works Roubaix – Team
• S-Works Roubaix – Shimano Dura-Ace Di2
• S-Works Roubaix – Sagan Collection
• S-Works Roubaix – SRAM RED eTap AXS
• S-Works Diverge Frameset
• S-Works Diverge – SRAM eTap AXS
• S-Works Crux Frameset
• S-Works Crux
• Roubaix Sport
• Roubaix Pro – SRAM Force eTap AXS
• Roubaix Expert
• Roubaix Comp – Sagan Collection
• Roubaix Comp – Shimano Ultegra Di2
• Roubaix Comp
• Roubaix
• Diverge X1
• Diverge Sport
• Diverge Pro
• Diverge Expert
• Diverge Elite E5
• Diverge E5
• Diverge Comp E5
• Diverge Comp
• Crux Expert
• Crux Elite

2019

The supplied OEM list includes the following complete 2019 entries:

• Women's Tarmac Disc Sport
• Women's Tarmac Disc Expert – Mixtape LTD
• Women's Tarmac Disc Expert
• Women's Tarmac Disc Comp
• Women's S-Works Tarmac Disc
• Venge Pro
• S-Works Venge – Sagan Collection
• S-Works Venge Frameset – Sagan Collection
• S-Works Venge Frameset
• S-Works Venge Disc – SRAM eTap
• S-Works Venge
• S-Works Tarmac SL6 Disc Frameset WC
• S-Works Tarmac SL6 Disc Frameset – Sagan Collection LTD
• S-Works Tarmac SL6 Disc Frameset – Mixtape LTD
• S-Works Tarmac SL6 Disc Frameset
• S-Works Tarmac SL6 Disc – SRAM eTap
• S-Works Ruby
• S-Works Roubaix Frameset
• S-Works Roubaix
• S-Works Diverge Frameset
• S-Works Crux Frameset
• S-Works Crux
• Roubaix Comp – Ultegra Di2
• Roubaix S-Works – Warranty Frame
• Men's Tarmac Disc Sport
• Men's Tarmac Disc Pro
• Men's Tarmac Disc Expert

Compatibility Notes

• Rear axle application only.
• Requires 12x142mm rear hub spacing.
• Overall axle length must match 166mm.
• Thread specification must match M12 × 1.0.
• Specialized has used multiple 12x142 road thru-axles with different lengths, thread pitches, and head/lever designs.
• Do not select a replacement based on hub spacing alone.
• Verify Specialized MPN S170200002 and the original axle dimensions before ordering.
• Torque the axle according to the applicable DT Swiss and Specialized specifications.

Important Fitment Distinction

This S170200002 axle should not be confused with other Specialized 12x142 rear axles, including versions with different overall lengths or fixed-position heads.

For correct fitment, confirm all three primary measurements:

12x142mm hub spacing + 166mm axle length + M12 × 1.0 thread pitch.

Factory Replacement for Specialized Road & Gravel Bikes

The DT Swiss RWS design combines secure wheel retention with convenient tool-free operation. Its adjustable lever can be repositioned after tightening, allowing proper clearance without compromising axle clamping.

S170200002 is used across an unusually broad range of Specialized road and gravel platforms, including generations of Tarmac, Roubaix, Diverge, Crux, and Venge.

Stage 21 Bikes carries genuine and factory-spec replacement hardware for hard-to-find Specialized road, gravel, mountain, and Turbo applications.