Built using a high compression carbon construction, the Race X Lite features a combined rise, upsweep, and backsweep that's been optimized for carbon construction. Designed and tested to meet Bontrager's stringent standards for fatigue and impact strength.Bontrager riser profile with upsweep puts your hands right where they want to be31.8mm clamp area creates a stiff bar and secure interface with the stemFabricated from OCLV carbon15mm rise9 degree bend, 4 degree upsweep