Wheels Manufacturing Derailleur Hanger 354 MFPN=RR21DM42TFLT12BLK Designed for aerodynamic efficiency and

Designed for aerodynamic efficiency and accessibility it includes two high-grip cages and offers extensive customization for mounting accessories

One-piece machined steel X-Dome design for weight savings

Keys for Reverb seatposts

SpeedsSpeeds 11sp SizeSize 1/2x11/128 LinksLinks 136L Master linkMaster link Material Material ColorColor Silver WeightWeight 266g WidthWidth UseUse QuantityQuantity

Front/Rear FT Cassette Body/Freehub Hole Count 36H Spacing/Axle QR Material Aly Color Sil Weight Brake Type RIM Spacing 100 PCD-L 40 PCD-R 40 LTF-L LTF-R CTF-L CTF-R

Wheels Manufacturing Derailleur Hanger 354 MFPN=RR21DM42TFLT12BLK Designed for aerodynamic efficiency andWheels Manufacturing hangers are stiffer than almost any OEM hanger which improves durability and shifting performance. OEM hangers are only produced by a handful of manufacturers mostly in Taiwan and China. As a result you will see many bikes with exactly the same hanger. Bicycle manufacturers may make mid year changes. Please use the hanger photos to select the proper hanger for your application. CNC machined 6061 aluminum Made in the USA