Kyosho IF435 Servo Horn Set Inferno MP9

This is the servo horn set for Kyosho's Inferno platform.

The servo horn is the arm that bolts to the servo output spline and converts the servo's rotation into the push and pull that moves your steering linkage. It sits at the very start of the steering chain, which means any flex or slop here is multiplied by everything downstream. A worn spline or a horn that has started to flex under load produces steering that feels disconnected and does not return to exactly the same centre point twice, and on a high-torque 1/8 scale servo that failure can happen faster than people expect.

Horn length also matters as a setup item, since it sets how much linkage travel you get for a given amount of servo rotation, and therefore your total steering throw.

Despite the MP9 designation in the name, Kyosho's own fitment list is far broader. It covers the MP9 and MP9e range, MP10, MP10T, MP10e, MP10Te and MP11e, the Inferno ST-RR Evo. and Evo.2 truggies, Inferno GT3, and even the TF6 and TF7 touring cars.