Rear Insert for 1:10 Buggy - Kyosho 612204B Closed Cell  [KY-612204B]

Tuning insert for 1:10 buggy rear tyres

The Kyosho 612204B rear insert is a closed cell foam internal designed to fit inside 1:10 buggy rear tyres and control the tyre profile under load. It gives drivers a predictable internal form that affects handling behaviour during cornering and acceleration.

Intended for 1:10 buggy tyres that accept closed cell inserts; confirm tyre internal diameter and wheel offset before installing. The component is an internal tyre support and should be used in concert with tyre pressure, shock settings, and compound selection to tune handling characteristics.

Installation guidance: ensure the insert seats evenly around the rim, trim sparingly where needed, and avoid adhesives or solvents which may damage the foam. Check bead seating and perform a bench systems check prior to track sessions. Frequent tyre changes require careful handling to minimise damage.

Tuning notes: the firmness of a closed cell insert changes how the contact patch behaves. Firmer inserts help maintain a flatter contact patch and promote sharper turn-in, whereas softer inserts allow more local deformation and can improve bite on loose surfaces. Integrate insert choices with anti-roll adjustments and shock tuning for best results.

As a direct internal replacement for compatible 1:10 buggy rear tyres, this insert helps racers and tuners refine rear traction and consistency without altering wheel or tyre geometry.