From Traxxas:
The new molded foam inserts are firmer than the stock Drag Slash inserts and optimized for race-winning performance with the latest sticky-compound slicks. Available in +1 and +2 firmness, the stiffer inserts reduce compression under acceleration for instant response and faster launches. The increased firmness also reduces side-to-side sidewall flex and tread walk for enhanced stability and control from start to finish.
The firm foam inserts are molded for precise fit and consistent track feel.
#9469R – Molded firm insert for #9471R slicks, +1 firmness – $14.00
#9469X – Molded firm insert for #9471R slicks, +2 firmness – $14.00
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