Tamiya 40142 Rear Inner Sponge 1/12 On-Road Replacement [40142]

Price:

£1.72

Brand:

Tamiya

Model:

40142

GTIN:

4950344401420

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R/C General - Wheels / Tyres - 1/12 On-road

Precision Tyre Support from Tamiya 40142 Rear Inner Sponge

The Tamiya 40142 Rear Inner Sponge offers precise internal support for 1/12 on-road tyres, helping to maintain shape under load and deliver consistent handling. The foam insert improves contact stability so braking, cornering and exit behaviour feel more controlled.

Product Highlights

Consistent Support: Accurately sized foam that limits sidewall collapse and improves contact patch stability.
Lasting Performance: Durable foam that withstands regular competitive use without rapid degradation.
1/12 Fitment: Specifically made for 1/12 on-road wheels for easy installation and reliable results.

Will this fit older 1/12 wheel designs?

It fits most standard 1/12 on-road wheels, but check wheel internal diameter against the insert to confirm compatibility with vintage rims.

Do I need to glue the insert inside the tyre?

Many users rely on a snug fit, though a small amount of tyre-safe adhesive can be used for long sessions to prevent movement.

Is trimming necessary for performance tuning?

Some racers trim inserts to fine tune sidewall stiffness; trim carefully and test changes on track to find the right balance.