6304ZZ (6304Z) Bearings for Scooters, ATVs, Go-Karts, & Dirt Bikes (Set of 2)

This is a set of two 6304ZZ double shielded bearings for use in many applications, including wheels of gas scooters, ATVs, dirt bikes, go karts, & custom applications. Also commonly referred to as 6304Z series.

Shielded (ZZ or Z suffix) scooter bearings of this size are commonly used in wheels, transmissions, gearboxes, and various other GY6/QMB139 engine components.

These single-row, deep groove ball bearings are designated as medium-weight and feature a 20 mm diameter bore hole.

Be sure to check your existing bearings for the series number, which is often etched onto the outside wall of the bearing.

⚠ WARNING California Residents: Proposition 65 Warning

Diameter (Outer): 52 mm
Diameter (Inner): 20 mm
Width: 15 mm