LUNJE 1-1/8 in (28.6mm) Stem Riser Extender, Rise 150mm, 6061-T6 Aluminum Lightweight Easy Install

LUNJE’s 1-1/8" (28.6mm) stem riser extender raises your handlebars to a more upright, comfortable position with a lightweight 6061-T6 aluminum build.

If your rides leave you reaching or hunching, this stem riser gives a simple mechanical fix: swap the top cap for a taller riser to change cockpit height without replacing the stem. Built to fit standard 1-1/8" forks and available in six clearly marked lengths, the LUNJE riser is designed for fast installation, corrosion resistance, and reliable performance on daily commutes or rough trails.

How does this riser fit my bike?

The riser is machined for the standard 1-1/8" (28.6mm) steerer tube, so it will sit directly above most threadless headset stacks. Each riser is labeled with its length so you can match the extension to your needs without measuring guesswork. If your fork uses a different diameter or an integrated special system, measure first.

• Standard fit: 1-1/8" (28.6mm) inner bore for common threadless forks.
• Six lengths: 90, 115, 135, 150, 180, 210mm for precise height control.
• Works with MTB, road bikes, commuter bikes, and many BMX setups.

Will it stand up to everyday use and weather?

Manufactured from forged 6061-T6 aluminum, the riser balances low weight and solid durability. The corrosion-resistant finish repels moisture and grime from daily riding, while the robust construction resists impacts encountered on trails or city streets. It’s designed to protect handlebar tape and stay secure under repeated loading.

• Material: 6061-T6 forged aluminum for strength and lightness.
• Finish: corrosion-resistant surface to handle wet conditions.
• Weight range: approximately 113–287g depending on chosen length.

How easy is installation for a DIY rider?

Installation is straightforward and requires only the included hex keys and the step-by-step guide; no specialized workshop tools are necessary. The process involves removing the top cover, sliding the riser in place, setting the desired height, and tightening the bolts to specification. Newer riders can complete the swap in minutes.

• Includes: two hex keys and a clear instruction leaflet.
• Steps: remove cap, position riser, align handlebars, torque bolts, check alignment.
• Typical install time: under 20 minutes for most cyclists.

Which riser length should I choose?

Select a length based on how much upright posture or leverage you want. Shorter lengths (90–115mm) give a subtle lift for commuting comfort, medium sizes (135–150mm) suit mixed-terrain and longer rides, and longer options (180–210mm) provide maximum upright posture and improved trail control. Each option is clearly marked to simplify selection.

• 90mm: mild lift, retains sporty reach.
• 115–135mm: everyday comfort and reduced neck strain.
• 150–210mm: greater control for off-road or relaxed upright posture.

Who is this for: Cyclists looking to quickly and affordably change their handlebar height without replacing the stem or forks. The LUNJE stem riser suits commuters wanting less neck strain, mountain bikers seeking improved steering leverage on technical trails, and hobbyists who prefer an easier upright riding position. If your bike accepts a 1-1/8" steerer and you want a lightweight, install-friendly solution, this riser is a practical upgrade.