The 3Racing SAK-D5651 aluminium front upper arms are made to stiffen the front end of Sakura D5 and D5S cars. Swapping to alloy arms reduces unwanted movement and helps the chassis hold its setup over multiple runs.
Aluminium offers improved wear resistance over factory plastic arms, keeping pivot geometry true under load. That durability translates to fewer part changes and steadier on-track behaviour.
These arms allow subtle setup changes to suit loose or grippy surfaces. Adjusting arm positions and suspension settings with aluminium pieces gives more repeatable results when testing setups.
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