Made for aggressive trail and enduro riding, OneUp Aluminum Wheels balance strength and stiffness for a responsive feel. These are quality wheels at a fair price. Available in 29 and MX configurations, with dedicated front and rear rim designs and spoke counts. Features: OneUp Aluminum Rims The 28 hole, 29” rim is designed as a dedicated front rim. The 32hole rim, in 27.5 and 29”, is reinforced to be a dedicated rear rim Both rims have an asymmetric design, 27mm depth, 30mm internalwidth, angled bead walls, bead retention tracks and 3mm offsetspoke holes for more even spoke tension Hubs, Valves and Tape OneUp Wheels use their fully machined 7075 aluminum hubs with44T ratchet drive and J-Bend spokes Our Fillmore Valves provide three times the airflow of a Presta valve,which makes tire seating easy and eliminates clogging. High-quality 3M tape ensures an airtight seal for quick tire setupand smooth installation Specifications: 29” or MX Wheel sizes Weight: Front: 937g, Rear (including XD driver): 1059g (29”), 1014g (27.5”) OneUp Hubs - 44t ratchet drive (Black only) Hub Type: 6 Bolt Freehub Option: XD Double-butted J-Bend Sapim spokes Asymmetric rims, front/rear specific Warranty: All OneUp Components, including their wheels, are covered by a 2-year warranty.OneUP's 2-year wheel warranty covers the following: Hubs Visibly cracked rims Damaged spoke holes Rims that do not hold air Flat spots that make it impossible to tension the wheel appropriately In other words, if it’s too messed up to ride with confidence, we’ll replace it