This is an optional ProTek R/C Hardened 15 tooth clutch bell for Mugen MBX5 and OFNA style clutch systems. These clutch bells are hardened and precision cut, providing you with
worry free performance that is on par with any manufacturer. The clutch
bell is installed over the clutch shoes and will engage when the engine
rpm's increase, allowing the engines power to transfer to the center
spur gear and the rest of the drive train. A clutch bell with fewer
teeth than what you are using will provide increased bottom end
acceleration with reduced top end speed, which is good for smaller
technical tracks. A clutch bell with more teeth will increase top end
speed, at the expense of reduced bottom end acceleration, which is
better suited to larger flowing tracks. Includes two rubber sealed 5x10x4mm clutch bearings.
Inner Diameter: 26.5mm
Bell Depth: 12.5mm
Bearing Size: 5x10x4mm
ProTek R/C is an A Main Hobbies brand.