ALL BALLS Chain Roller Lower 79-5016 Rim Diameter_12 Inch All Balls seals are designed

All Balls seals are designed with a carbon/fluorocarbon sealing lip to reduce "dry start" friction

Outside Width: 9

The flat inside gives a great feel of the frame

116 DOT 4 and is thus street legal in the USA and Canada

ALL BALLS Chain Roller Lower 79-5016 Rim Diameter_12 Inch All Balls seals are designedAll Balls offers a complete line of OE replacement and universal chain rollers along with a complete application guide. The universal 34mm and 38mm Polyurethane chain rollers have a 98A Durometer hardness for long life and feature sealed precision bearings with two additional outer seals to prevent water and dirt from contaminating the bearings. They are the longest lasting chain roller in the industry. The OE replacement chain rollers that mount