Kyosho IF123 Upper Suspension Arm Set Inferno

This is the upper suspension arm set for Kyosho's Inferno platform, covering both the front and rear positions.

The upper arms, often called camber links, control how much negative camber each wheel picks up as the suspension compresses and the chassis rolls. That is one of the most influential geometry settings on the car, because camber determines how flat the tire sits on the ground at full cornering load and therefore how much grip it can actually generate. Their length also sets the roll centre at each end, which changes how much the chassis leans and how quickly weight transfers.

They take direct impacts too, and a bent upper arm changes camber on one corner only, which makes the car handle differently left versus right in a way that is easy to misread as a shock or diff problem.

The set includes the arms for both ends of the car along with the threaded turnbuckle rods, so you can adjust camber without disassembly once fitted. Dealers list fitment across the Inferno MP-7.5 and MP777, Inferno GT and GT2, Inferno NEO and the MP7.5 Sport.