comes with a 33 tooth spiral cut ring gear and 12 tooth spiral cut pinion gear

and the R620 is compatible with a wide range of Tractor Truck Option Parts as well

silver is soft

as well as biasing the weight forward

Pit Bull Tires - 2.2 Beadlock Raceline #931 Injector, Gun Metal Wheels and Black Rings, Includes Hardware Replacement Parts RC Helicopter Tail Rotor Parts comes with a 33 toothPIT BULL RC is proud to introduce their Officially Licensed Scale RACELINE #931 INJECTOR Beadlock Wheels. RACELINE WHEELS is one of the top Wheel companies in the 1: 1 world and good friends of Pit Bull Tires. They only work with top quality companies with integrity. Pit Bull RC Officially Licensed Raceline wheels are made from top quality stoic material: Designed to fit vast majority of 2. 2 Tires in the Scale RC market Deadlock Technology no gluing,