Adjustable Minus Sixty Five Degree To Plus Forty Five Degree Aluminum Bike Stem Riser, 140mm Length, Fits 31.8mm Handlebars And 28.6mm Fork Tubes, Mountain Road City Bike Bar Extender For A Smooth, Comfy Ride

Single 140mm (5.5 in) Aluminum Bike Stem Riser, 31.8/28.6 fit
✔️ 140mm length, fits 31.8mm bars & 28.6mm tubes, -75° to +50°

The adjustable bike stem is a lightweight aluminum bar extender that lets you raise or lower your handlebars for a comfy, upright riding position. It's a common upgrade for mountain, road, and city bikes to improve posture and comfort.

✅ Length: 140mm (5.5 in)
✅ Compatibility: 31.8mm handlebars and 28.6mm fork tubes
✅ Angle adjust: -75° to +50°
✅ Material: 3D forged aluminum alloy with frosted surface
✅ Includes mounting hardware for quick setup

💡 What is an adjustable bike stem used for?

It’s a handy way to dial in handlebar height for a comfy ride.

• Ergonomic optimization of riding posture
• Works with 31.8mm handlebars and 28.6mm fork tubes
• Suitable for mountain, road, and city bikes
• Made from durable aluminum alloy with precise angle marks