Tamiya Inner Sponge Front 1/12 On-Road Tyre Insert - 40141  [40141]

Tyre Insert to Stabilise Road Contact

The Tamiya 40141 Inner Sponge Front sits inside 1/12 on-road tyres to support the tyre walls and keep the tread in better contact with the surface. That support reduces excessive roll and helps maintain traction through bends.

Smoother Cornering and Predictable Grip

Used during practice or competition, the inner sponge helps tyres react more consistently to steering inputs, making it easier to dial in handling and pace on varied surfaces.

Which Wheels Work Best

This insert is compatible with many standard 1/12 on-road wheel designs and is handy for pilots who tune set-ups between track conditions. Ensure the insert sits evenly inside the tyre to get repeatable results.