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Here it is: Alex Donnachie’s latest signature frame, the ALVX AF+. Alex wanted a bike that reacts the instant he does, and this frame delivers. It’s now available in two new colourways, Classic White and Black, joining Military Green in the lineup.
The standout is the rear end. At 12.5", the ALVX chainstay is about as short as it gets, and the invest-cast yoke is what makes it work. It opens up more tire clearance than regular tubing when your wheel is slammed. Because it’s cast and heat-treated, it also creates a stiffer, stronger rear triangle. No tire rub, no flex.
BSD ALVX-AF+ FRAME SPEC:
| Toptube Sizes | : | 20.3" / 20.6" / 20.8" / 21" |
| Rear End | : | 12.5" - 13" |
| Headtube Angle | : | 75.5° |
| Seattube Angle | : | 71° |
| Standover | : | 8.7" |
| BB Height | : | 11.7" |
| Colours | : | Classic White / Black |
Invest Cast Yoke
Invest Cast Dropouts
External Gussets
The details hold up too. The one-piece cast dropouts are 7mm thick and grind-friendly with no overhang, and they have integrated chain tensioners. There are external gussets at the head tube, and the frame is built from Sanko Japanese 4130 triple-butted tubing. It weighs 5lbs and is brakeless.
Available in four top tube lengths, from 20.3" to 21".
