The XRAY 306531 Brass Chassis Stiffener is a precision brass insert that replaces the original graphite plate to raise chassis stiffness and longevity. At 5.0 grams total, it concentrates about 4 grams at the centre of the chassis to limit unwanted movement and help the car track truer through bumps and transitions.
Brass increases rigidity where it matters most, delivering a firmer centre section and more repeatable handling. That added mass helps maintain balance under braking and during rapid direction changes, which many racers find improves lap consistency.
Engineered for a clean fit on compatible models, the XRAY 306531 fits into the existing stiffener location and uses standard mounting points. Installation is brief and can be completed with common hobby tools, making it a quick pit-lane upgrade.
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