Transition Spur XT Di2

A downcountry 29er built for riders who want electronic shifting precision without the SRAM AXS price tag, the Transition Spur XT Di2 from Transition Bikes wraps Shimano's wireless XT Di2 group around the same 120mm rear, 130mm front Spur platform that has made the bike a downcountry favorite. The Fox Float 34 SL Factory fork up front and Fox Float SL Factory shock (190x45mm) handle the suspension, and the four-piston XT brakes give the stopping power that XC-leaning builds usually skimp on.

Shimano's XT FC-8200 cranks run 32t on 165mm arms, the XT CS-M8200 cassette stretches 10-51t, and the wheels are DT Swiss XR 1700 Spline laced for fast rolling. Cockpit duties go to a RaceFace AEffect R 40mm stem and size-specific RaceFace Era Carbon bars (760x20mm on SM, 780x40mm on MD, 800x40mm on L/XL) with a OneUp dropper that scales 150mm SM, 180mm MD, 210mm L/XL. Geometry numbers land at 65.5-degree head angle, 75.9-degree seat angle, 626mm stack, 439mm chainstays, and 1231mm wheelbase, and at a verified 26.37 lbs for the closely related XTR Di2 build, the Spur XT Di2 sits as Transition's top Shimano-equipped Spur option above the Eagle 70 and Eagle 90 builds.