Trek's own Alpha Aluminum technology incorporates 6000-series aluminum for a lightweight frame, while a Bontrager Approved carbon fork enables ultra-sensitive maneuverability. Bontrager Approved alloy rims help to maintain a consistently even ride, and are reinforced with alloy hubs to ensure continued performance on uneven terrain. Drivetrain components include a 9-speed STI shifter and derailleur set from Shimano's Tiagra series, with compact and triple-chain FSA Vero crank set options available to riders that require a more portable or heavy-duty bike. The Lexa SL's Bontrager Affinity 1 WSD saddle is reinforced with steel rails for enhanced durability, alongside a set of adjustable Race series VR-S handlebars. Brake response is available in the form of a dual-pivot system for ultra-sensitive stopping whenever necessary, and includes a set of Shimano Sora STI adjustable-reach levers for reflex-activated triggering in case of emergency.