It uses a similar hollow crown to support sturdy 34mm stanchions, but the pitch of the crown-the distance between the legs-is increased to accommodate plus-sized tires and 110mm Boost spacing at the dropouts. Manitou’s new Magnum fork is loosely based on the single crown Mattoc. The frame has space for two water bottles in the usual configuration of seat and down tube. Moving forward, the Stache keeps things low in the front with a 100mm head tube (size 17.5 frame) holding a Manitou Magnum Pro fork in place. All this leaves no room for a front derailleur, so the Stache is 1x only. This gives extra strength and more clearance around the hefty 29x3.0 Bontrager Chupacabra tires that come stock on the bike. The pressfit-style BB92 bottom bracket shell and the first 4 inches of the left stay are forged as one piece. Even there, Trek has a trick up its sleeve. But only on the drive side-the left stay attaches in the traditional position. Yes, you read that right: an elevated chainstay. To get a rear center as short as was wanted, and to stay with a normally sized bottom bracket shell, Trek anchored the drive side chainstay above the bottom bracket. They hold the rear wheel solidly in place with a 12mm thru-axle. It also features a remarkably tight wheelbase, which is adjustable thanks to sliding dropouts that Trek calls Stranglehold. New from the ground up, the Stache frame takes full advantage of Boost 148, the wider spacing of the rear dropouts and realigning of the chainline that Trek and SRAM brought into play last summer.
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