The BSD ALVX AF+ Frame is set up with aggressive tech geometry. The new version now includes an investment cast chainstay yoke which gives plenty of tire clearance and keeps the rear end nice and stiff.
- Alex Donnachie signature
- Invest Cast Yoke: At 12.5" the ALVX chainstay length is as short as it can be. By using invest casting we were able to create a new chainstay yoke which creates more clearance for the tire for when your wheel is slammed. Also because this part is cast and heat treated it strengthens the rear end of the frame by creating a more rigid junction.
- Invest Cast Dropouts: The dropout is cast as one piece, much stronger than a plate welded to a tube. 7mm thick to provide good support for your axle, and the small shape has been designed for grinding meaning there's no overhang to catch on ledges or rails, also the dropout is heat treated before welding making it extra tough. And finally there are integrated chain tensioner bolts inside.
- External Gussets: On a frame the highest concentration of stress is at the junctions between the headtube/toptube and headtube/downtube. To handle the pressures of modern riding, the required strength is achieved using a combination of butted tubing and external gussets.
- Sanko Japanese seamless 4130 chromoly tubing
Top Tube Lengths: 20.3", 20.6", 20.8", or 21"
Head Tube Angle: 75.5°
Head Tube Length: 117mm
Seat Tube Angle: 71°
Chainstay Length: 12.5-13"
BB Height: 11.7"
Brake Mounts: None (Brakeless)