The Speedco M2 Alloy Pro XL 24 is a cruiser race frame built around a press-fit BB86 bottom bracket. The cups press straight into the shell, and the 86mm width makes room for a super wide chainstay and a massive down tube junction, which is where the frame gets its rigidity and its response.

Up front is a tapered head tube running a 1-1/8" top bearing and a 1.5" bottom bearing, so you can fit a fork that is lighter and stronger than a straight steerer allows. The 10/15mm dropouts have a chain tensioner integrated through the front, plus two flex free 4mm adapters each side, so there is no need to over tighten the wheel. Pro XL 24" runs a 21.75" top tube, 15.4" chainstay, 73° head angle, 69.5° seat angle and 12" bottom bracket height.