The NX derailleur has a been designed for performance and durability

Biodegradable

The B17 is Brooks' flagship model

Removable minimal chamois pad improves pedaling comfort

**will NOT auto start from some dynamo powered USB chargers**

MAXXIS Dissector Tire - 29 x 2.6 - Dual EXO - Wide Trail - Black can be discounted The NX derailleur has aFrom the Dissector, Troy Brosnan wanted to create a "unicorn tire" a center tread design that carried speed easily but with edge blocks worthy of world class cornering speed. The Dissector center knobs are all heavily ramped to minimize drag, but retain sharp, flat edges along their backs to provide strong braking traction. Small sipes give the knobs additional flexion, increasing their surface area during braking and aiding the transition to the edge