Wheels Manufacturing Dropout-378 Derailleur Hanger #378 Open 29'' this boot handles the up

this boot handles the up and downhills with ease

Can also be used down to 10F with no compromise in speed

Deep Peri-Canal provides continuous relief channel from tip to tail

flexible and unbeatable

Weight 500g/ ½ pair (size 188)

Wheels Manufacturing Dropout-378 Derailleur Hanger #378 Open 29'' this boot handles the upWheels Manufacturing Derailleur Hanger 378. Wheels 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