Element Shim Set for AEG Gearbox

Upgrade your Tokyo Marui gearbox with this precision Shim Set Upgrade Kit. Designed to replace Marui’s original shims, this set allows for accurate gear spacing to improve efficiency, reduce internal wear, and create smoother, quieter operation.

Ideal for gearbox maintenance, rebuilds, or performance upgrades, this kit provides multiple thickness options so you can properly dial in your setup.

Shim Set Includes:

• 0.2mm × 6 pcs
• 0.3mm × 6 pcs
• 0.5mm × 6 pcs

Fine-tune your gearbox with confidence and keep your airsoft build running at peak performance.