15x21x4 Ceramic Metal

15x21x4 Ceramic Metal

Product Information

SKU: 6702ZZC
Price: $5.00
Quantity: 87 in stock

Product Overview

The 15x21x4 Ceramic Metal bearing (6702ZZC) is a high quality steel/chrome bearing with metal shields and silicone nitride ceramic balls (Si3N4).

A hybrid ceramic bearing can spin at higher rpms with less drag and the life of the bearing is far greater than a steel bearing but in our industry we suggest that you maintain them with oil or grease every half-gallon to a gallon for the longest life possible. Another benefit to ceramics is the weight difference in the balls allowing for less rotating mass. These bearings have been tested and proven by the top racers in the world.

Bearing Dimensions

Product Family

15x21x4 Revolution
SKU: 6702-RSZ | Price: $1.00
15x21x4 Rubber
SKU: 6702-2RS | Price: $1.00
15x21x4 Metal
SKU: 6702ZZ | Price: $1.00
15x21x4 Ceramic Revolution
SKU: 6702-RSZC | Price: $5.00
15x21x4 Ceramic Metal
SKU: 6702ZZC | Price: $5.00
15x21x4 Revolution | Aura
SKU: 6702-RSZO | Price: $2.00