Yokomo YOKZCT16M Inner Sponge 16mm Foam Insert for 1/10 Off-road Tires  [YOKZCT16M]

Inner sponge for 1/10 off-road tyres

The Yokomo YOKZCT16M is a 16mm inner sponge designed for 1/10 scale off-road tyres, sold as a medium-density insert for tyre support and handling adjustment. It is a long-standing, commonly used foam insert intended for off-road buggies and similar RC applications where tyre deformation and traction tuning matter.

Use this inner sponge to adjust tyre shape and sidewall support: fitting a medium-density 16mm insert can change how the tyre transfers power and responds to suspension inputs. The material aims to balance durability and conformity so it sits inside the tyre without adding external components.

Installation is straightforward: seat the foam evenly inside the tyre, ensure the sponge is centred and free of twists before mounting the wheel, and re-check fit after the first run. Inspect the insert periodically for compression or damage and replace if it no longer supports the tyre profile consistently.