The BC40 SRAM XX SL Eagle Transmission build is a cross-country race bike for riders chasing fast accelerations and start-line sharpness. The 120mm carbon frame runs a slack head tube angle and a long front-to-center, positioning the rider behind the front wheel for predictable handling on fast, technical tracks. SRAM's XX SL Eagle Transmission drives a 34T crankset in 165mm length with an integrated power meter, shifting over an XD driver so training data and gear changes run off one wireless group.
RockShox handles both suspension and adjustment. The SID Ultimate fork delivers 120mm of travel up front, paired with a SIDLuxe Ultimate shock, while Flight Attendant reads the trail and moves between open, pedal, and lock settings on its own. Zipp 1ZERO HITOP SW carbon wheels balance XC speed with trail durability over an XD driver, wrapped in 29x2.4 Vittoria Mezcal XC Race tires, with TyreWiz 2.0 reporting pressure on course.
The ALLIED DUET cockpit pairs an HB08 bar at 5mm rise and 780mm width with a 50mm ST05 stem for direct steering, anchored by a Wolf Tooth Premium IS 41/52 headset. A RockShox Reverb AXS dropper with 125mm of travel and the Pod Ultimate controller clears the Selle Italia SLR Advan saddle on descents. It is the same frame Kate Courtney races at the World Cup, built to hold a line through punchy climbs and rocky corners.