Brand new very rare Ambrosio Conversion Cassette. RUN ELEVEN SPEED CAMPY DRIVETRAINS ON A SHIMANO HUBBED WHEEL.

This cassette allows you to run 11 speed Campy gears/ergolevers on a SHIMANO 11 speed freehub pattern/wheel.

No more worrying about using a Shimano spec wheelset on your Campagnolo equipped bike. A really fantastic idea from Ambrosio.

Great Ambrosio quality - I've run this on my summer best bike for over a year with no sign of wear or degradation after several thousand miles - the Ambrosio nickel plated steel actually seems to last much longer than my previous matt finish Campy Chorus 11 cassette did. I have also run an Ambrosio 10 speed converter cassette on my 10 speed winter bike for years now and that has been excellent as well.

My 11-speed summer bike is Chorus/Record mix with 11-speed shifters and derailleurs, with one of these conversion cassettes on my Chris King R45 hubbed wheels which have a Shimano-fit freehub. I've used Shimano, Campy and KMC chains all with perfect results.

Fitting the cassette is as normal, fit cogs and spacers in the order as pictured - the thin aluminium spacer fits between the two largest cogs, the black composite spacers between the rest.

Cassette comes with the correct lockring for the Shimano freehub (use a regular Shimano-fit cassette tool), works perfectly with Campy 11-speed shifters/drivetrain set-up.

11-28 ratios for best gear spread - 11T for flying down hills and a 28T for an easier life going back up!

Cogs are 11-12-13-14-15-17-19-21-23-25-28.

I can also get other ratios by custom order, just message me with what you need. These will cost $50 more and will take around 2-3 weeks longer to arrive as they will come from Italy on an individual order basis. The regular 11-28 gives the best spread of gears though so is the best and most popular option.

Item shipping: Do please note, I travel a lot for work and family so am not always at home, therefore shipping time is usually around 10 business days, sometimes a little longer, sometimes a little less. Some smaller items I have listed I may take with me so I can get them to you sooner, therefore items are not always shipped from LV. If you need the item quicker, or if any of the above is a problem for you, please purchase elsewhere. I am 100% reliable and always look after my buyers but I am not a shop or an ebay business so I cannot offer super-quick turn around. Thanks for your understanding and all the best.