The Bontrager Line Pro 40 TLR Boost 27.5in MTB Wheel is built to be wonderfully wide. Instantly upgrade your traction and cornering performance with the Line Pro 40. The wide, durable and lightweight carbon rim perfectly supports plus tyres. The wheels are built around Rapid Drive 108 hubs for near-instant engagement to keep you powering through even the most challenging terrain.Bontrager Line Pro 40 TLR Boost 27.5in MTB Wheel FeaturesOCLV Pro Carbon offers an optimised blend of weight, strength and durabilityRapid Drive 108 hub instantly transfers effort into forward momentumTubeless Ready (TLR) rims allow for quick transition to a tubeless system upgradeBoost 110/148 and Stacked Lacing dramatically increase wheel stiffnessUltra-durable OCLV Carbon rim with 41 mm internal, 46 mm external width, 28 hole fr/r28 front/rear DT Swiss Aerolite 14/17G bladed spokes with Alpina alloy locking nipples6 bolt disc, Shimano 10-/11-speed, SRAM XD driver available separatelyIncludes 21 mm TLR tape, a TLR valve and valve core removal toolBontrager Line Pro 40 TLR Boost 27.5in 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 mmHoles2828Butting14/17/1414/17/14Cross-sectionBladedBladedBrake type6-bolt disc6-bolt discAttachmentThru-axleThru-axleNipple locking typeAlloy lockingAlloy lockingValvePrestaPrestaWeight764g894g