Wolf Tooth Alloy Bar End Plugs Black, Set of 2 — Machined Aluminum, Low-Profile

Wolf Tooth Alloy Bar End Plugs are precision-machined aluminum end caps that secure into most mountain and road handlebars for a finished look and reliable fit.

These bar end plugs combine an anodized 6061-T6 aluminum outer cap, a black anodized 7075 aluminum bolt, and a glass-filled nylon expanding wedge to deliver a low-weight, durable solution for closing off open-handlebar tubes. Designed and made in the USA, the plugs are sized to clamp inside common handlebar inner diameters and are available in matching anodized colors to coordinate with other Wolf Tooth hardware.

How do these plugs attach to different handlebars?

The plugs use an expanding wedge mechanism: turn the bolt and the nylon wedge expands to grip the inside wall of the handlebar tube. This method works across a range of inner diameters, so you get a tight, rattle-free fit without adhesives or permanent modification.

• Compatibility: fits handlebars with 18 mm to 21.5 mm inner diameter
• Installation: tighten with a 3 mm hex tool (not included)
• Clamping: wedge expands to conform to the tube interior for secure retention

Will these add much weight or bulk to my bike?

No — the set is deliberately lightweight and compact so it won’t affect balance or steering feel. At just 17 grams for the pair, they preserve the intended weight distribution while providing a clean aesthetic finish to your bars.

• Total weight: 17 g per set of two
• Profile: low-profile cap keeps bars sleek and unobtrusive
• Materials chosen for strength-to-weight efficiency

What materials are used and how durable are they?

The caps are machined from 6061-T6 aluminum for corrosion resistance and crisp anodized color, while the bolt is higher-strength 7075 aluminum. A glass-filled nylon wedge provides reliable expansion without damaging the handlebar inner wall.

• Cap: 6061-T6 aluminum, anodized for long-lasting finish
• Bolt: black anodized 7075 aluminum for strength where torque is applied
• Wedge: glass-filled nylon resists creep and grips securely

How should I install them to avoid common mistakes?

Start by inserting the wedge and cap assembly into the handlebar, then use a 3 mm hex key to turn the bolt until the wedge expands snugly. Stop tightening once the plug is secure — overtightening can damage the wedge or strip the bolt threads.

• Tool required: 3 mm hex key (not included)
• Tighten until snug; do not overtighten to prevent component damage
• Check fit periodically and re-tighten gently if needed

Who is this for? Cyclists who want a lightweight, durable, and attractive way to finish their handlebars will appreciate these Wolf Tooth Alloy Bar End Plugs. They suit road and mountain riders who care about detail — whether matching headset and stem hardware, replacing worn plugs, or simply removing open-tube hazards. If you need an easy-to-install, minimal-weight solution made in the USA that fits most common handlebar inner diameters, these plugs deliver a tidy, reliable finish.