Pro Sizes Feature (Pro and larger):

• Pro XL-S weight of just 2.65 lbs making it the lightest on the market.
• 53mm down-tube that tapers to 73mm at the bottom bracket creating a wider shell and a more rigid ride.
• BB86 Bottom bracket (requires a press-fit BB86 bottom bracket)
• Pro Frames: 10/15/20mm dropouts with built in chain tensioner allows you to use the hub of your choice (10mm and 15mm adapters included, 20mm adapters sold separately).
• Tapered Head Tube is the new standard for high-end race frames.  The head tube uses a 1-1/8" bearing on the top and 1.5" bearing on the bottom to allow the use of stronger and more rigid 1.5" tapered forks.
• Internal Cable routing allows the cable to run entirely through the frame to eliminate splitting your cable housing and to improve the aesthetics of the frame....because looks are important at this level.
• Standard V-brake mounts