Stan's notubes ZTR Alpha 340 rims let you have next generation tubeless technology in a sub-400 gram rim for both road and cyclocross. The low weight and semi-aero profile of the Alpha 340 makes for a fast accelerating, stiff and strong wheel built to meet the needs of riders who put a premium on low weight and high performance. This version 2 is updated with a 33% thicker spoke bed to better maintain high spoke tension.
Notubes Bead Socket Technology means a more secure seal between tire and rim and a proper tire profile for lower pressures, faster cornering and less rolling resistance. BST rims also accelerate faster, thanks to shorter, lighter sidewalls. When combined with specific road Tubeless tires, the Alpha offers a ride normally only found with tubular tires and rims, but maintains the simplicity and low maintenance of a clincher. The Alpha rims can also be used with a standard clincher tire and tube.
Rim tape, valve stem and sealant are needed for tubeless applications - not included. Suggested tape 21mm