These are two aluminium oval washers made for RC Kyosho motorcycle gearbox assemblies, sold as a 2 piece set. The oval shape functions as a locating shim where keyed or offset holes prevent a standard round washer from seating correctly.
Intended for hobby applications, the alloy washers give a firmer seating and steadier thickness compared with thin stamped washers, useful when adjusting gear mesh, limiting side play, or aligning small spur and pinion layouts in motorcycle gearboxes.
To install, clean the contacting surfaces, position the oval washer so the offset matches the hole orientation, and reassemble the gearbox components making sure the washer sits flat. Recheck mesh and axial play and tweak as needed.
This is an RC spare intended for Kyosho motorcycle gearbox configurations referenced in the title; do not apply to full scale vehicles.
Copyright © 2008-2026 rcjaz.co.nz All rights reserved