This is an optional 15T Hardened steel clutch bell for 1/8th scale buggies, and trucks from Fioroni. These clutch bells are precision cut and tempered to give you the best worry free performance. The larger the clutch bell, the more top end speed the vehicle will have, but will provide less bottom end acceleration. This would be good for larger tracks with longer straights and higher top speeds.
NOTE: This clutch bell uses 5x10mm bearings.