Kyosho 74031-02 Under Head (KE21SP) Maxx Parts the High-Torque 400 provides noticeably

the High-Torque 400 provides noticeably faster turning speed and works great with TSM™ equipped vehicles

Hardened steel for durability

This is the O Scale J

Mounting: Standard 3 Hole (same as AMB/MyLaps)

They can corrode when exposed to corrosive materials

Kyosho 74031-02 Under Head (KE21SP) Maxx Parts the High-Torque 400 provides noticeablyKyosho 74031 02 Under Head (KE21SP) The 74031 02 is a genuine Kyosho under head component designed for the KE21SP engine. This part sits within the engine's internal assembly and helps maintain proper compression and heat management. Genuine Kyosho engine parts are made to match factory tolerances precisely. Genuine Kyosho part 74031 02 Under head component Fits KE21SP engine Genuine replacement part