Undercover 8 mm Spacer – 6061 aluminum wheel bearing spacer (single)

Undercover 8 mm Spacer – accuracy & durability

This 8 mm bearing spacer is CNC-machined from 6061 aluminum to keep your 608 bearings perfectly aligned. It sits between the two bearings inside the wheel so you can fully tighten the axle without restricting spin.

Key features

• Universal 8 mm fit: works with most frames and Ø8 mm axles (urban, aggressive, fitness).
• Spacer width 8 mm for precise axial support and smooth rolling.
• 6061 aluminum construction: lightweight, strong, durable.
• Sold per piece: order exactly what you need.

Technical specs

• Inner diameter: 8 mm
• Width: 8 mm
• Bearing type: 608 (standard)
• Material: 6061 aluminum
• Pack: 1 pc

Installation tips

1. Press one 608 bearing into the wheel.
2. Drop in the 8 mm spacer centered in the core.
3. Press the second bearing and tighten the Ø8 mm axle until snug – the wheel should spin freely with no play.

Why a spacer?

A bearing spacer keeps the correct distance between bearings, allowing a fully tightened axle and maintaining a free, fast spin. It reduces premature wear and improves speed and stability.