The Profile Design Boa Stem is a threadless stem that allows you to use 25.4mm or 1" handlebars with a 1-1/8" steerer tube. Constructed from 6061-6 Aluminum with a two-bolt face plate. Available in black or silver and a variety of lengths and angles.
Bar Diameter: 25.4mm
Steerer Diameter: 1-1/8" (28.6mm)
Stem Angle: 20°, 40°
Stack Height: 45mm