The Expert XL model is where size and spec are both stepped up a few notches in the Race Lite line. At the heart of the Expert XL is the 6061 alloy frame which boasts an integrated head tube, 3D dropouts with integrated chain adjusters and the PTC (Power Transfer Center) which is a combination of an oversized down tube and BB86 bottom bracket shell. The drive train finds 170mm 2 piece alloy race cranks combined with a sealed bearing BB86 press fit bottom bracket for optimum power delivery. Controls are stepped up in size and strength with a 1 1/8" steer tube 100% chromoly fork, expert rise chromoly bars and Pivotal seat/post combo. All this rolling on 36 spoke alloy wheels with sealed bearings makes for pro level speed and handling.