Wolf Tooth Compression Plug with Integrated Spacer Stem Cap

Wolf Tooth Compression Plug with Integrated Spacer Stem Cap Info

Wolf Tooth Compression Plug with Integrated Spacer Stem Cap is a precision-engineered solution for setting proper headset preload on bikes with carbon steerers. Whether you’re building a road, gravel, or mountain bike cockpit, this compression plug provides a secure internal anchor point while maintaining a clean, refined front-end setup.

Designed specifically for 1 1/8" steerer tubes, the compression plug expands inside the steerer to safely preload the headset without damaging carbon fiber. Unlike a star nut, which should never be used in a carbon steerer, this system distributes force evenly and protects the integrity of the fork.

The included integrated 5mm spacer stem cap addresses a common requirement from fork manufacturers: the steerer tube must extend slightly above the stem. By incorporating a spacer directly into the stem cap, this design ensures proper clamping height while keeping the cockpit streamlined. Available in multiple anodized color options, it also adds a subtle visual accent to your build.

Wolf Tooth Compression Plug with Integrated Spacer Stem Cap Specs at a Glance

• Compatibility: 1 1/8" steerer tubes.
• Steerer Type: Designed for carbon steerers; also compatible with metal steerers with 23.5–24.5mm inner diameter.
• Integrated Spacer: 5mm stem cap spacer included.
• Insertion Depth: 28mm.
• Material: 7075-T6 aluminum.
• Weight: 38g.
• Stem Cap Bolt Torque: 2–3 Nm with light grease on threads only.
• Expansion Bolt Torque: 5–7 Nm.

Design Benefits

1. Carbon-Safe Headset Preload: Even expansion design eliminates the need for a star nut in carbon steerers.
2. Integrated 5mm Spacer: Helps meet steerer extension requirements without additional stack complexity.
3. Precision Fit: Engineered expansion range ensures secure anchoring in compatible carbon and alloy steerers.
4. Lightweight and Durable: 7075-T6 aluminum construction balances strength and minimal weight.

Final Take

The Wolf Tooth Compression Plug with Integrated Spacer Stem Cap is a smart, detail-focused upgrade for any performance build using a carbon fork. It delivers secure headset preload, meets manufacturer steerer height requirements, and adds a clean finishing touch to your cockpit—all with the machining quality riders expect from Wolf Tooth.