Fit & Geometry
The new Hightower is offered in the same five sizes as the old one, Small through XXL, and despite the modern trend toward longer reaches, that particular number hasn’t grown a ton — just 5 mm per size. The Large frame comes in at 472 mm (low position) with 20 mm jumps to the Medium and XL frames, and 25 mm steps from there to the S and XXL. But the new Megatower has a much slacker headtube angle at 63.5° (from 64.7°, both in the low position) and new size-specific chainstay lengths, in lieu of the flip-chip on the outgoing model. The prior bike could be run with 436 or 446 mm stays in all sizes; the new one ranges from 437 to 448 mm across the size range.
The seat tube angle has gotten substantially steeper — and larger sizes get slightly steeper effective angles than the smaller ones, with the Small frame starting at 77° and the XXL clocking in at 77.5° (effective, low position).