For the Moto Guzzi MGS-01 Corsa (1225cc): Two bearings are required for the front wheel and two for the rear wheel. Koyo: 6005DDU, 6005-2RS-...
Koyo 6006DDU. Double sided rubber sealed. Outer diameter 55mm. Inner diameter 30mm. Width 13mm. Made in Japan.
This wheel bearing kit uses premium quality Japanese Koyo bearings.