Full Speed Ahead Headset Spacers

These spacers are designed for standard 1-1/8 inch (28.6 mm) steerer tubes, which is the most common size found on modern road, mountain, and hybrid bicycles. If your bike uses a tapered or straight 1-1/8 inch steerer, these will fit perfectly.

Polycarbonate is significantly lighter than aluminum and won't corrode or seize onto your steerer tube over time. Additionally, the non-metallic material prevents scratching or marring the finish of your fork's steerer tube during installation or adjustment.

Each spacer in the pack is 5 mm tall. With 10 pieces included, you have a total of 50 mm of stack height adjustment available, allowing you to fine-tune your handlebar position in precise 5 mm increments.

Yes, these polycarbonate spacers are robust enough for standard mountain biking applications. They are designed to withstand the compression forces of the headset assembly without cracking or deforming.

No special tools are required. You will simply need the appropriate hex keys to loosen your stem bolts and remove the top cap, allowing you to slide the spacers on or off the steerer tube as needed.