The Bontrager Line Comp 30 TLR Boost 27.5 Disc MTB Wheel is a durable Tubeless Ready mountain wheel with Rapid Drive 54 hub and the added stiffness of Boost. With Line Comp 30, you'll feel the impact of wider rims on the quality of your ride. A Tubeless Ready (TLR) rim with a 29mm internal width better supports your tyres so you can run less tyre pressure and get more traction, better cornering stability and increased control. Plus, a 54-tooth Bontrager Rapid Drive hub provides quicker engagement for fast acceleration.Bontrager Line Comp 30 TLR Boost 27.5 Disc MTB Wheel FeaturesRapid Drive 54 hub instantly transfers effort into forward momentumTubeless Ready (TLR) rims allow for quick transition to a tubeless system upgradeBoost 110/148 wider hub flanges enhance the bracing angle for a stiffer wheelAn ultra-durable rim with 29 mm internal, 34 mm external width, 28 hole front/rear28 front/rear 14G spokes with brass nipples6 bolt disc, Shimano 10-/11-speed, SRAM XD driver available separatelyIncludes an installed TLR rim strip, TLR valve and valve core removal toolBontrager Line Comp 30 TLR Boost 27.5 Disc MTB Wheel SpecificationsSizeFront, Not applicableRear, Shimano/SRAM MTB/Road 8/9/10-speedFT/RRFrontRearDiameter27.5"27.5"TypeTubeless Ready (TLR)/ClincherTubeless Ready (TLR)/ClincherCassette compatibilityNot applicableShimano/SRAM MTB/Road 8/9/10-speedHub width110 mm148 mmAxle diameter15 mm12 mmHoles2828Butting1414Cross sectionRoundRoundBrake type6-bolt disc6-bolt discAttachmentThru axleThru axleNipple locking typeBrass lockingBrass lockingValvePrestaPrestaWeight934g1044g