AELLA Crankcase Breather for BMW (15mm Internal Pressure Control Valve)

During traveling, the inside of the crankcase is pressurized by the high-speed reciprocating motion of the piston. This pressure builds and becomes a large resistance to the piston's movement, causing various harmful effects.

The AELLA Crankcase Breather / internal pressure control valve keeps the crankcase's internal pressure optimized. This optimization has many positive effects on your motorcycle, such as: A reduction of vibration of the engine, A reduction of engine braking which is criticized as being too strong on the L-twin engines, and the entry of the corner becomes easier, with greater control.

You can also experience the improvement of torque as it is smoothed and improved, as if you had a custom build/tune of the engine.

Compatible BMW models:

• For Breather Hose Inner Diameter 15mm