Adjustable Bike Stem For 31.8Mm Handlebar And 28.6Mm Steerer Extender Riser, 0 To 60 Degree Tilt, Available In 90Mm 110Mm And 130Mm Lengths, Mountain Road BMX Compatible, Easy Height Adjustment

Adjustable Stem for 31.8/28.6mm Steerer, 0-60 Degree Tilt
✔️ Fits 31.8mm handlebars and 28.6mm steerer; 90/110/120mm

This adjustable bike stem extender lets you raise and angle handlebars on bikes with 31.8mm bars and 28.6mm steerer tubes. It's a handy upgrade for mountain, road, and BMX bikes to improve posture, visibility, and control.

✅ 4-bolt clamp securely locks handlebars in place
✅ 0-60° adjustable angle for fine-tuned riding position
✅ Fits 31.8mm handlebars and 28.6mm steerer tube
✅ center-to-center lengths: 90mm, 110mm, 120mm
✅ Made from high-strength 3D forged alloy for durability
✅ Easy height adjustment without removing the stem

💡 What is a sealed ball bearing used for in a bike stem and how does it affect performance?

It helps reduce friction and wear while keeping the stem moving smoothly.

- Reduces friction and wear for smoother tilt and clamp action
- Improves longevity under daily riding and rough conditions
- Helps maintain alignment and reduce play over time
- Supports reliable performance across road, mountain, and BMX use