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Bicycles > Gravel > Complete

Description

Specialized's Aethos program produced the lightest production road frame the brand has ever built, and that engineering approach — layup optimization, material selection, and refusing to add mass for its own sake — carries over to the S-Works Crux. The 2026 S-Works Crux uses the same FACT 12r carbon frame with a claimed 725-gram weight , and pairs it with SRAM's new 13-speed Red XPLR AXS group to drop another 102 grams from the previous S-Works build . The result is a gravel race platform where the frame weighs less than a full water bottle and the complete build sits well under the class average.

The frame uses Rider First Engineered construction with a threaded bottom bracket, 12x142mm rear thru-axle, flat-mount disc tabs, and a UDH dropout . The UDH dropout is the enabler for SRAM's Red XPLR direct-mount derailleur, and it also gives future-proofing for any T-Type or XPLR component that follows the same interface standard. Tire clearance reaches 47c on 700c wheels or 2.1" on 650b , giving room to run chunky rubber when the course demands it without carrying the frame weight penalty typically associated with that kind of clearance.

Geometry positions the Crux firmly in race territory rather than adventure-gravel comfort. Sizing runs from 49 to 61 across six frame sizes, with a stack-to-reach ratio that favors an aggressive position without dropping riders into pure road race fit. The threaded BB shell keeps future service straightforward, and the non-integrated cockpit means bar and stem swaps require no proprietary interfaces or hidden cables.... Read More

Features

  • S-Works FACT 12r carbon frame, Rider First Engineered, 725g claimed (size 56)
  • S-Works FACT carbon fork, 12x100mm thru-axle, flat-mount disc
  • Threaded BSA bottom bracket shell
  • 12x142mm rear thru-axle with UDH dropout
  • Tire clearance: 47c on 700c or 2.1" on 650b
  • SRAM Red XPLR AXS 1x13-speed wireless electronic drivetrain
  • SRAM Red XPLR 10-46T cassette
  • SRAM Red AXS crankset with integrated power meter, 40T chainring
  • SRAM Red AXS hydraulic disc brakes, 160mm rotors front and rear
  • Roval Terra CLX II wheels, 25mm internal, 32mm depth, tubeless-ready
  • Roval LF13 front hub with ceramic SINC bearings, LF14R2 rear with SRAM XDR
  • Pathfinder Pro tires, tubeless-ready
  • Roval Terra carbon handlebar, 12° flare, 103mm drop, 70mm reach
  • S-Works SL alloy stem with titanium bolts
  • Roval Alpinist carbon seatpost, 27.2mm
  • S-Works Power saddle with Mirror 3D-printed padding
  • Six sizes: 49, 52, 54, 56, 58, 61
Geometry
Size Stack Reach
49 530mm 375mm
52 547mm 382mm
54 560mm 388mm
56 578mm 397mm
58 598mm 405mm
61 621mm 415mm