Upgrade handling for race day with the Yokomo ZR-043 lightweight foam inserts. These inserts are engineered to support tyre shape and enhance traction on carpet, fitting MSR-BD11, MSR-BD12 and MSR-BD12A chassis for a straightforward upgrade.
The combination of stiffness and low mass helps tyres hold their profile during high load, delivering steadier grip through fast corners and better exit traction. Ideal for drivers chasing a predictable chassis balance.
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