- The Ultra-light carbon XC wheel - Hookless rim wtih an internal width of 26mm, mates perfectly with fast rolling cross-country tires ranging from 2.1" to 2.4". - Quest Disc MTB hubs (120 grams for the front and 245 grams for the rear) with their super quick five-degree engagement, tool free service and centerlock spline for disc brake rotors. - Pillar Wing 20 J-Bend spokes and alloy nipples are laced double-cross with 24 spoke front and 28 spoke rear. - The ultra-light, yet durable, 370-gram rim measures 26mm internal, featuring a 2.8mm offset rim bed for better tension balance and a more responsive wheel build. - These specs total up to a 1380-gram wheelset that has a modern day wider rim design and can handle the rigors of cross country mountain bike riding.