Koswork 5x7x0.1mm & 5x7x0.3mm 5mm Shaft RC Shim Set - KOS40507

The Koswork KOS40507 shim set provides 5mm shaft shims in two thicknesses — 0.1mm and 0.3mm — for precise drivetrain and bearing adjustment on RC cars. Supplied as four pieces of each size, this shim set gives you the flexibility to dial in exact tolerances across differentials, gearboxes, and shaft assemblies. Shims at this scale are essential for eliminating unwanted play or preload in drivetrain components, and having both a fine (0.1mm) and a coarser (0.3mm) option in one pack makes it straightforward to achieve the correct stack height without ordering multiple separate sets.

Key Features

• Two thicknesses included: 0.1mm for fine adjustment and 0.3mm for larger corrections
• Fits 5mm diameter shafts, suitable for differentials, gearboxes, and motor shafts
• Four pieces of each thickness supplied, giving enough to work across multiple locations in one build or service
• Small, consistent dimensions (5x7mm) ensure even load distribution around the shaft
• Useful for both routine maintenance and precision setup work on competition and club-level RC cars

What's Included

• 4x 5x7x0.1mm shims
• 4x 5x7x0.3mm shims

What You Need

• Compatible RC car or drivetrain component requiring 5mm shaft shims
• Appropriate tools for drivetrain disassembly and reassembly (e.g. hex drivers, circlip pliers)