The LA422-16 rear stabilizer bar from Kyosho is a direct-fit accessory for SB, ZX7.5, and RB7.5 platforms where the part number matches. It serves as a rear sway bar to reduce chassis roll and fine-tune balance through corners with simple installation guidance for hobbyists.
Fitment uses the vehicle's stock rear stabilizer mounts and existing hardware. Installation is typically a direct swap of the rear bar while keeping the original end links; check that the bar moves freely through the suspension arc and that mounts are aligned before running.
In practical setup terms the LA422-16 changes rear roll stiffness: a stiffer rear bar cuts body roll and tends to promote understeer, while a softer bar raises rear compliance and can make the car feel more neutral or prone to oversteer depending on front settings. Make incremental adjustments and test laps to dial in the desired balance.
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