M2 Treated 1" I.D. Bearing rear end Overall length 7-1/2"

Overall length 7-1/2"

Hyper Racing # 084-077

Hyper Racing # 15-192

Note: Bolt kits that come with individual components are not included in this bolt kit

The tire will grow as it goes down the straight

M2 Treated 1" I.D. Bearing rear end Overall length 7-1/2"Hyper Racing # 25 5021 1" I. D. Bearing for front end of your Junior Sprint, Micro Sprint if running Keizer or other brand hubs. When it comes to bearings it all boils down to one thing: reducing friction and rolling resistance. Which translates to increased speed! Shop our full selection of M2 sealed rear bearings along with front tapered and sealed bearings to gain an advantage on the competition. The M2 process introduces a treatment to metal