The 3Racing SAK-M5P08 Graphite Rear Tail Stiffener is crafted to alter rear flex rates on the Sakura Advance M5, helping tuners achieve a more consistent balance between front and rear load transfer. Graphite construction provides a high stiffness to weight ratio, allowing fine tuning of corner entry and midcorner behaviour without adding significant mass. This part is useful when calibrating shock settings, anti-roll bars and toe to extract lap time gains at the limits.