This is the optional 51 Tooth Light Weight Steel Spur Gear for the
HPI Hellfire Monster Truck, 86511
FEATURES: Less rotational mass than the stock spur gear for better power to
weight ratio and quicker acceleration
INCLUDES: 51 Tooth Light Weight Steel Spur Gear for the HPI Hellfire
SPECS:
Diameter: 2" (52mm)
Thickness: 0.16" (4mm)