Kyosho IF282 113.5mm Center Drive Shaft MP9 Readyset

This is the 113.5mm centre drive shaft for the Kyosho Inferno MP9 Readyset, in the rear centre position.

The centre shaft carries every bit of torque headed for the rear axle, and it does so through joints that articulate constantly as the chassis flexes and the suspension moves. That makes it one of the highest-stress parts in the drivetrain and a genuine wear item.

Wear shows up at the ends first. The bone tips round off and the cups they seat in open up, and the resulting play produces a knock under acceleration and a clunk on throttle transitions. Left alone, a worn shaft eventually jumps out of its cup, and on a centre shaft that means an immediate and total loss of drive.

Length is the critical spec here, since the front and rear centre positions take different shafts. At 113.5mm this is the longer rear shaft; the front uses a separate part number. Kyosho lists it for the MP9 Readyset, with dealers also citing MP9 TKI4 fitment.