The MZ601 Main Unit Set is a genuine Kyosho replacement assembly for the Mini-Z MR-03EVO chassis

which uses the motor’s sensors at startup to provide cog-free starts

Insulated needlepoint axles

RPM part number 80742

Compliments the traditional MIP Hex Drive Wrench's

Powerhobby Hardened Steel 31T Mod1 5mm Pinion Gear Mod 1 Speed Run / Drag Racing E10 Parts The MZ601 Main Unit SetPowerhobby Hardened Steel 31T Mod1 5mm Pinion Gear with 2 Grub Screws Description Fine tune your RC vehicles gearing with a Powerhobby Hardened Steel Mod 1 Pinion Gear. Designed for motors with a 5mm shaft, these gears provide the strength and durability needed for high power RC cars, trucks, speed run vehicles, and drag racing applications. Each pinion features two set screw holes for a more secure attachment to the motor shaft. Two M4 grub screws