BMW M235i(F22/F23)

Cat-Back System

Remote Valvatronic System

It Follows Original Actuator Drive

Following original actuator drive in catback.

STONE valvetronic system.

Easily to install, use OBD2 socket, it can be operated after connect the drive motor.

Using strong transmission components between the motor and the axis of the valve, to avoid the possibility of fracture.

Constituting with simple parts, durable, low crashed problems.

Doesn't use the engine or brake vacuum, won’t affect the engine power or reduce the braking performance.

Have on / off / setting / auto functions.

Emission Notice

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