Surly Ultra New Rear Hub - Threaded x 120mm Rim Brake Fixed/Free Black 32H CheckoutSpec= 30.9 x 350 Bl } 230% higher air flow Includes 2 44mm CushCore MFPN=2AANA1060BK2 Ski Length:MD B-CE0966

Surly Ultra New Rear Hub Threaded x 120mm Rim Brake Fixed Free Black 32H CheckoutSpec= 30.9 x 350 Bl } 230% higher air flow Includes 2 44mm CushCore MFPN=2AANA1060BK2 Ski Length:MD B CE0966 } 230% higher air flow than traditional presta valves thanks to the straight through bore deisgn Precision CNC machined from 7075 aircraft grade aluminium Stainless steel ball valve with seals and O rings 4 way tyre insert air flow base is compatible with most tubeless inserts 4mm machined hex key slot for easy installation removal Available in 25 Shimano's XTR XC hydraulic disc brake system increases brake rigidity for greater bike control and optimizes braking performance for different riding styles