AELLA Crankcase Breather for the Triumph Street Twin (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.

A breather hose is also included as standard, so it can be installed simply by replacing the OE part.

We recommend cleaning every time the engine oil is changed.

When oil mist from the crankcase passes through the internal pressure valve, the mist adheres very little.
If it adheres excessively, the movement of the valve will be hindered, and in the worst case, it may cause the valve to stick. Cleaning the inside of this product with a parts cleaner will restore it to its original state, so we recommend cleaning every 6,000km (3000 Mile) or every oil change .