Aero Road Bike Cockpit

Model a one-piece aero road bike cockpit (integrated handlebar + stem), matte black, symmetric about the XZ plane (Y = left, X = forward, Z = up). BODY: flat wing-profile tops, 80 mm deep (X) x 20 mm tall (Z) with rounded edges; tops run straight and horizontal in top view. The stem connects the bar to the steerer clamp at the rear: a steerer clamp for a 28.6 mm (1-1/8 in) steerer tube sits behind the bar; the bar centerline is 100 mm in front of the steerer axis. Compact drop: reach 80 mm (bar centerline to front of hoods), drop 125 mm (tops to bar-end centerline), flare 4 degrees outward per side (front view). Overall width 420 mm center-to-center at the bar ends; cylindrical bar ends 30 mm diameter with flat circular end caps. FEATURE 1 - COMPUTER MOUNT: a shallow rectangular recess on top of the stem, centered on the symmetry plane, sized for a Sigma ROX 11.1 EVO GPS computer (46.8 x 66.1 x 20.8 mm) on a click-twist mount insert; recess tilted about 15 degrees toward the rider, with clearance for the full device and its removal rotation. FEATURE 2 - HEADLIGHT: a continuous recessed light strip along the forward edge of both tops: 10 mm tall, 160 mm long per side, filled with a flush translucent diffuser (light exits forward). FEATURE 3 - TURN INDICATORS: at each bar end, the end cap carries a circular amber ring light, 5 mm wide, facing rearward; the right one is a mirrored copy of the left one. FEATURE 4 - CABLE ROUTING: internal 6 mm channels from openings on the underside of the tops to exits at the underside of the stem. NOTE: Create a conceptual model only. All dimensions except the verified SIGMA device dimensions are provisional design assumptions, not measurements from the reference image. Represent the original SIGMA mount as a placeholder until its actual interface and installation clearances have been measured.

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