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Description of item
The inside of the crankcase is pressurized by the high-speed reciprocating motion of the piston when riding.
This excessive pressure has a large resistance of the piston movement, and it can cause various harmful effects.
The internal pressure control valve keeps the crankcase internal pressure proper by merely installing, and it has great merit such as reduction of vibration of the engine, and it is the reduction of engine braking which is too strong, and entry of the corner is easy.
In addition, it can feel the smooth feeling at the time of low rotation or experience the improvement of torque as if tuning the engine.
