PRO Koryak Di2 (+/-6) Stem

The Koryak Di2 Stem is of a piece with PRO’s Koryak Di2 handlebar: a light, practical stem that can work with Di2 integration. It’s the kind of stem you’ll find on lots of bikes in many disciplines—it’s light, versatile, strong, and a great value. You’ll see it gracing light cross-country rigs to tough all mountain steeds and everything in between. The black anodized stem is one you’ll be able to use forever, happily. It’s 3D forged from 7075 aluminum and CNC-machined to trim off the excess material. There are two rises available: 0-degrees, or +/- 6-degrees. The zero degree stem comes in 40, 50, 60mm lengths. the 6-degree stem comes in lengths from 70-100mm in 10mm increments. The steerer clamp, which operates with two bolts, is designed for 1 1/8” forks. The handlebar clamp, which sports four bolts and a removable face plate is for 31.8mm handlebars. Where this stem differs from others is the option for Di2 integration. If you hide your Shimano Di2 battery in the steerer tube, with the help of a PRO BTR Expander, part number PRHS0111, and also run a Di2-compatible handlebar, also from PRO, you can hide the Di2 cables from the elements and from getting snagged. The battery holder is a combined holder and expander bolt that has a somewhat traditional top cap that screws in to adjust preload. The PRO Koryak Di2 Stem is an able handlebar holder and a cool way to integrate electronic shifting on your bike.