Pro Stem Koryak 40mm/31.8mm

The PRO Koryak Stem 40mm 31.8mm is a short, trail-focused MTB stem built for precision handling and durability. It’s part of PRO’s Koryak range, aimed at XC, trail, and all-mountain riding.

Key Features & Benefits

40mm Length: Improves steering responsiveness and control on technical terrain
0° Angle: Keeps your cockpit neutral and predictable on climbs and descents
31.8mm Clamp: Compatible with most modern MTB handlebars
Strong Alloy Build: 6061 aluminium construction balances strength and weight
Trail-Ready Design: Built for rough riding, not just lightweight XC use

Specifications

Length: 40mm
Clamp Diameter: 31.8mm
Steerer: 1 1/8” (28.6mm)
Angle: 0°
Material: 6061 aluminium
Weight: ±150–170g (depending on version)
Use: XC / Trail / All-Mountain

Who Is This Best Suited For?

Riders wanting quicker steering and more control
Modern MTB setups with wide handlebars (760–800mm)
Trail riders who prefer a more aggressive cockpit
Bikes that feel too long or sluggish with a longer stem