The Whisky Parts Co. No. 9 80w Carbon Tubeless Fat Rim offers 27. 5-inch fat bike riders a lightweight, easy to use tubeless platform for their next custom wheelset. The rim's wide internal width helps maximize the improved rollover and longer contact patch that 27. 5in fat tires offer, while the double-wall carbon fiber construction ensures precise handling, low rolling weight, and considerable strength. As with other Whisky Parts Co. rims, the No. 9 80w's TBLS bead offers secure tire performance at low pressures and greater impact resistance out on the trail.