Replaceable Derailleur Hanger / Dropout 399Wheels Manufacturing Replaceable Derailleur Hanger Dropout 399 The Wheels Manufacturing Replaceable Derailleur Hanger Dropout 399 is designed to enhance your bike's shifting performance. Made from solid 6061 aluminium, this dropout is CNC machined to precise standards, ensuring a perfect fit and improved rigidity. Key Features Ideal for upgrading or replacing rear derailleur dropouts, offering increased stiffness and rigidity. Constructed from CNC

CE EN 1078:2012

12 x 148mm Boost rear axle spacing options

making them a great choice for tackling challenging trails

with a total capacity of 20 teeth

these brakes are perfect for upgrading your old or worn-out v-brakes

Rim wear indicator allows safe detection of worn rim

Reads wear from 0

soft touch

The SRAM Rival eTap AXS Rear 12-Speed Derailleur is a reliable choice for cyclists seeking performance and adaptability

Centre Rise: 10mm

Shimano Non-Series Di2: Reliable Electric Shifting

Available in the X01 ® master colorway and Oxy Red X01 ® signature colorway