Run a braze-on front derailleur on a frame that never had a braze-on tab. This SRAM RED clamp adapter wraps a standard 31.8 mm round seat tube and gives any compatible SRAM braze-on front derailleur a secure, precise mounting point, with the added bonus of a tab for SRAM's ChainSpotter chain-control device.

Highlights

  • Converts a 31.8 mm round seat tube to a braze-on front derailleur mount
  • Integrated tab to fit a SRAM ChainSpotter chain-control device (ChainSpotter sold separately)
  • RED-level clamp, simple to install or remove
  • Wide SRAM road compatibility across AXS, eTap, 22 and earlier groupsets

What it does

Many frames are designed only for clamp-on front derailleurs, while SRAM's lightest road front derailleurs use a braze-on mount. This adapter bridges that gap: it clamps around the seat tube and presents the standard braze-on interface, so you can fit a braze-on front mech without modifying the frame.

ChainSpotter ready

The clamp carries a dedicated tab for SRAM's ChainSpotter, a small, lightweight, easily adjusted chain-control stop that helps keep the chain from dropping off the inner chainring. The ChainSpotter device itself is purchased separately.

Compatibility & fit

Suits frames with a 31.8 mm round seat tube. Designed to mount braze-on front derailleurs from SRAM AXS, RED eTap, RED 22, RED, Force 22, Force, Rival 22, Rival and Apex. If your seat tube measures 34.9 mm, choose the 34.9 mm version of this clamp instead.

SRAM components are covered by SRAM's limited warranty against defects in materials and workmanship for the period required by Australian Consumer Law and SRAM's published terms. This warranty does not cover damage from crashes, improper installation, neglect, or normal wear.

For any warranty claim or support, please return the item to Tune Cycles and our team will manage the assessment and process on your behalf.

  • SRAM RED braze-on front derailleur clamp adapter
  • Fits 31.8 mm round seat tubes
  • Includes a tab for mounting a SRAM ChainSpotter chain-control device (ChainSpotter sold separately)
  • Lets you fit a braze-on front derailleur on a frame without a braze-on tab
  • Simple to install or remove
  • Compatible with SRAM AXS, RED eTap, RED 22, RED, Force 22, Force, Rival 22, Rival and Apex braze-on front derailleurs
TypeBraze-on front derailleur clamp adapter
Seat tube diameter31.8 mm
ChainSpotter mountYes (ChainSpotter device sold separately)
Brand levelSRAM RED
SRAM modelAC-FDCL-A1
Front derailleur compatibilitySRAM AXS, RED eTap, RED 22, RED, Force 22, Force, Rival 22, Rival, Apex braze-on
SKU PSI-SR007615037000
Model # 007.615.037.000
Barcode # SR007615037000
Brand SRAM