This Kyosho factory replacement center differential spur gear is designed for the MP9 and MP10 platforms and features a 48-tooth count. It is a 1.0 modulus gear, making it compatible with matching 1.0 mod pinion gears. The gear is made from metal and includes lightening holes in the face to reduce rotating mass. Features: 48-tooth count 1.0 modulus pitch Metal construction Fits MP9 and MP10 center differential 7/7/26 cs