Aluminum Alloy Bicycle Stem Riser Adapter — 1 1/8" φ22.2mm 25.4mm 160mm Quill Stem Extender

Upgrade your riding position instantly with this durable Aluminum Alloy Bicycle Stem Riser Adapter. Designed for riders who need extra handlebar height or a quick conversion between quill and modern stems, this stem extender offers a lightweight, corrosion-resistant solution that’s easy to install and works with a wide range of bikes.

• Converts and raises your handlebar height without cutting the steerer
• Ideal quill-to-threadless or quill stem extender solution
• Lightweight, corrosion-resistant aluminum alloy — built for daily use

Key Features

• High-strength aluminum alloy construction — strong, lightweight, and rust-resistant
• Precise fit for 1-1/8" steerer (≈28.6 mm) with clamp adapters for φ22.2 mm (7/8") and 25.4 mm (1") handlebars
• 160 mm length for a substantial, comfortable rise (approx. 6.3")
• Smooth anodized finish resists wear and looks clean on any bike
• Simple expansion wedge design for secure, wobble-free mounting
• Versatile for city bikes, mountain bikes, hybrids, and commuters

Benefits

• Improve comfort: reduce back and neck strain by raising handlebars to a natural position
• Versatile compatibility: adapt different stem/handlebar sizes without replacing original parts
• Quick installation: upgrade in minutes with basic tools — no cutting or bike shop visit required
• Lightweight upgrade: adds height without unnecessary bulk or weight penalty

Specifications

• Material: Aluminum alloy
• Steerer fit: 1-1/8" (≈28.6 mm)
• Handlebar clamp sizes: φ22.2 mm (7/8") and 25.4 mm (1")
• Length (rise): 160 mm (≈6.3")
• Finish: Anodized

Compatibility & Fit Guide

• Measure your steerer tube diameter — this adapter fits standard 1-1/8" steerers (≈28.6 mm).
• Confirm your handlebar/stem clamp diameter is 22.2 mm or 25.4 mm before ordering.
• If unsure, bring measurements or a photo to your local bike shop for a quick check.

Easy Installation

1. Insert adapter into quill or steerer and align.
2. Tighten the expansion bolt/wedge to secure the adapter.
3. Mount your stem/handlebars and adjust angle/height.
4. Double-check tightness before riding.

Ready to ride more comfortably? Add this Aluminum Alloy Stem Riser Adapter to your cart now and enjoy an instant ergonomic upgrade.