Dear Friends and Customers,
Emmetec presents RIV4, the new family of bottom valves, exploiting the deflection of the shim-stack towards the centre.
The RIV4 bottom valves fits on 25, 27, 30, 32, 35 and 36mm cylinders, and are composed by the following components.
Emmetec RIV4 bottom valves allow a wide range of settings.
Moreover, since during the extension stroke the entire shim-stack flexes upwards freeing the body seat, they are self-cleaning, so prevents the risk of any dirt blocking the valve, generating annoying oil-gaps during the rebound stroke.