HPI Racing replacement pitch bell Nitro RS4 for HPI Nitro 2-speed transmissions. This part can also be referred to as the 2-speed clutch drum. Constructed of aluminum. Pre-installed bearing. This product includes one pitch bell.
This part is specific to a 2-speed transmission.
Outer diameter: 27.5mm (1.09) Inner bearing diameter: 5mm (0.20)
Requires: Assembly into 2-speed transmission