Improve emission gas cleaning ability by adopting rear exhaust system and
placing front catalytic converter by engine as close as possible.
A 4-point exhaust muffler hanger has been adopted for optimisation of position,
which reduces vibration to the vehicle.
The spherical joint has been adopted for connection between the front exhaust pipe
and the exhaust manifold, and between the exhaust pipe and the centre exhaust pipe, which reduces vibration
to the vehicle.