All Japan Championship ST600 class original exhaust pipe developed by testing and actual driving. Most of the exhaust pipes on the market today are designed for the 675, and the diameter of the pipe is too narrow to give priority to the low speed torque, so the true performance cannot be extracted at high rpm. The diameter of the pipe has been enlarged to the utmost limit and each cylinder has been interfered with each other by our original know-how to secure both torque at low speed range and power increase at high rpm range. There is a boss to install AF sensor which is necessary when installing full or sub-computer.The joint with the silencer has been changed to a spring hook in consideration of circuit driving. The diameter of the silencer is the same as stock, so it is possible to install stock silencer and external slip-on silencer.
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