LUNJE Bike Stem Riser Extender 1-1/8" 28.6mm, Rise-180mm forged 6061-T6 aluminum lightweight easy install

The LUNJE Bike Stem Riser Extender is an aluminum handlebar riser that fits 1-1/8" (28.6mm) forks to raise and improve riding position with six length choices.

If you want a quick, reversible way to change your bike’s handlebar height without replacing the whole stem, this riser gives a precise fit for standard 1-1/8" forks. Built from forged 6061-T6 aluminum, it balances strength and low weight so you can dial in posture for commuting, trail riding, or casual weekend spins. Every length option is clearly marked, and the package includes basic tools and a step-by-step guide to simplify installation.

How will this riser change my riding position?

The riser lifts the handlebars into a more upright stance, which can reduce forward lean and let you ride more comfortably for longer periods. Lifting height choices let you fine-tune posture: small increases favor aerodynamics while larger raises ease neck and back strain.

• Available lengths: 90, 115, 135, 150, 180, 210 mm for tailored lift
• Upright posture reduces hunching and increases visibility
• Marked sizes remove guesswork when choosing lift

Will this fit my bike and how secure is the attachment?

The riser is made specifically for standard 1-1/8" (28.6mm) fork steerers, so it’s compatible with most mountain, road, BMX, and hybrid stems that accept that diameter. Fastening hardware is designed for stable clamping and the alloy construction withstands everyday knocks and trail vibration when installed correctly.

• Standard 1-1/8" (28.6mm) bore for wide compatibility
• Forged 6061-T6 aluminum body resists corrosion and impact
• Included hex keys and clear instructions for secure installation

How difficult is installation and what tools are needed?

Installation is straightforward and aimed at home mechanics: remove the existing top cap and stem cover, slide the riser on, set the desired height, then tighten the bolts to the recommended torque. LUNJE includes two hex keys and a simple guide so no specialty tools are required for most installs.

• Step-by-step instructions included for a quick setup
• Two hex keys supplied—no extra purchases usually needed
• Installation typically takes under 20 minutes for experienced riders

Which length should I choose for my riding style?

Selecting the right length depends on how much lift you want and the type of riding you do. Smaller lifts (90–115 mm) suit riders who need modest posture change for commuting; medium lifts (135–150 mm) balance control and comfort; larger lifts (180–210 mm) favor relaxed steering and greater upright posture for off-road or leisure.

• 90 mm: subtle raise for minimal posture change
• 115–135 mm: daily commute comfort, reduces neck strain
• 150–180 mm: improved control on technical trails
• 210 mm: maximum lift for relaxed, upright riding and visibility

Who is this for: The LUNJE stem riser is aimed at riders who want a fast, reversible upgrade to handlebar height—urban commuters seeking comfort, MTB and BMX riders looking for improved control, and recreational cyclists who prefer a less aggressive stance. If your bike uses a 1-1/8" steerer and you want a lightweight, durable, and easy-to-install solution to tune riding ergonomics, this riser gives a range of options without replacing the original stem.