The 3Racing SAK-U311/PK rear suspension mount is a precision upgrade intended for competitive setups. Manufactured from 7075 aluminium, this component increases rear-end rigidity on the Sakura Ultimate and helps maintain repeatable geometry under load. The fixed 3.5-degree angle is selected to offer a controllable balance between lateral grip and rotational response.
7075 aluminium is used for its superior yield strength and stiffness relative to common alloys, making it appropriate for parts where dimensional stability affects handling. The mount holds suspension link positions firmly to reduce deflection during cornering forces.
Integrating this mount into a race setup will typically require minor adjustments to damper valving and rear spring rates to harmonise with the stiffer rear platform. Expect improved consistency on repeated laps and crisper feedback when refining corner entry and exit behaviour.