H691a: OEM alloy rear derailleur mech hanger, dropout replacement, replacement hanger, threaded axle rear derailleur hanger, same as Pilo D962

H691a Rear Derailleur Hanger with Mounting Nut for Cervelo Disc brake Road frames with thru axle (Not for R.A.T. axles). The only Cervelo disc frame from 2015 on that this part is NOT compatible with is the P5X. Can be used with one of Cervelo's threaded thru-axles such as: QRA-LVR-R (DT-style lever) or QRA-AERO-R (bolt-on Aero design). For use with Standard mount Rear Derailleurs only from Shimano, SRAM and Campagnolo. Assembly from inside. Assembly over the axle.

If you are looking for an actual R.A.T. version of this part, you need H691R - Cervelo part DRH-RAT.

Threaded axle rear derailleur hanger compatible with models of following brands (not exhaustive):

• Cervelo
• Cervelo Disc Road
• Cervelo Aspero
• Cervelo Aspero 5
• Cervelo C3 Disc Road
• Cervelo C5 Disc Road
• Cervelo Caledonia-5
• Cervelo P series Disc Road
• Cervelo PX series Disc Road
• Cervelo R series Disc Road
• Cervelo R3 Disc Road
• Cervelo R5 Disc Road
• Cervelo S series Disc Road
• Cervelo S5

Mounting on frame:     inner
Material:     Cold forged aluminium alloy 6061
Axle diameter:   12x135mm, 12x142mm Thru Axle, thread pitch 1.75mm
Comes with CVR18 Locknut
Stud thread:   M16x1.5mm
Color: Black
Derailleur mount type:     Standard mount

Equivalent To:
Cervelo CVR18-3
Mounting Nut CVR18
Cervelo SCU DRH-WMN112
Cervelo Part # DRH-WMN112
Pilo D962
Wheels mfg Dropout-330