Was great that they had this kit and the EZ-Just Mixture Screw both made my shopping one stop for everything to do with the CV carb. Instructions were great, received quickly and the communications by e-mail was excellent.

Of the three parts included:
Rubber O-ring - Slightly thinner than Keihin original
Spring - Exact replacement in appearance and load
Washer - Keihin is brass, this one is not.

Response from CVP: Thank you for your review. To clarify, the removed o-ring may have become swollen from fuel additives or was previously replaced with a non-metric seal. The exclusive Viton o-ring from CV Performance will resist fuel additives and not swell. We custom make our washer from stainless steel just like the one originally installed from the factory. The washer placed between our stainless steel spring and o-ring should never be brass or any of the other material sometimes sold by others. In all likelihood a previous shop or owner installed non-standard parts in place of the factory Keihin parts.

Perfect fit 4 days to arrive in Queensland Australia very happy.

EZ-Just Mixture Screw and Mixture Packing Kit