Extreme durability and performance for those that push boundaries. Diamond series bearings feature high precision chrome steel inner/outer rings with a weatherproof Diamond Matrix coating applied, diamond polished raceways and rolling elements, zirconium oxide (ZrO2) rolling elements, high strength thermoplastic cage, and Quantum's proprietary Graphflo engineered lubrication process.

Each Diamond Series Bearing Kit Includes:

8 x diamond series bearings

16 x frictionless shields (8 installed, 8 spares)

8 x speed washers

3 x stickers