This aluminium motor spacer and matched gear set is supplied as 1 pr for Kyosho Mini-Z AWD platforms. It establishes controlled axial motor position to optimise pinion to spur engagement on MR-03 AWD drivetrains, aiming to deliver repeatable mesh and reduced irregular tooth loading during competitive or practice use.
The package couples an aluminium spacer with three motor pinion selections and the corresponding main gear pairings referenced in the product title, enabling ratio changes by pinion swap without modification of the gearbox case. The aluminium spacer offers dimensional stability under load to preserve axial alignment compared with typical plastic mounting solutions.
Installation procedure: remove standard motor mount elements, install the spacer between motor and chassis to set the intended pinion engagement depth, then fit the selected motor gear ensuring correct mesh with the matching main gear. Verify backlash, endplay and smooth rotation before powering the motor. Use recommended thread locking compounds where applicable and avoid excessive force when seating gears to prevent premature wear.
Tuning and application: altering pinion and spur pairings adjusts acceleration and top speed for micro circuit conditions, while the spacer maintains mesh consistency across iterative tuning. This component is intended strictly for RC Mini-Z AWD race or practice vehicles.