Kyosho IF433 Chassis Brace Set Inferno MP9

This is the chassis brace set for Kyosho's Inferno MP9, covering the front and rear braces plus the bushings they mount with.

Chassis braces tie the bulkheads to the chassis and control how much the car twists under load. That torsional stiffness is a genuine setup variable rather than only a durability question. A stiffer chassis transmits steering and throttle input more directly and holds its geometry where you set it, giving sharper and more predictable response on high-grip surfaces. A more flexible chassis absorbs more and can find traction on rough or low-bite tracks where a rigid car skates.

They also take real structural load, and a bent or cracked brace changes how the chassis flexes quietly, before it ever visibly fails.

Kyosho redesigned this for the MP9 generation, replacing the older MP777 torque rod arrangement with something tougher that still allows controlled flex. The set includes the front brace, the rear brace and four rear brace upper bushings. Fitment covers the Inferno MP9 and its TKI through TKI4 variants, plus the MP9e and MP9e TKI.