Well what can I say…… nice one Dave I don’t know why I didn’t try this before
It’s all happening for 4000D owners. You can indeed upgrade your clutches massively to a bearing assisted assembly for the price of a Thunnus 4000 spool. Definitely worth it imo.
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On the thunnus 4000 you have this bearing built into the spool to eliminate any friction between the spool and seat and shaft. This means the delivery of your clutch no matter how tight it’s set should not stick as a result of the washers clamping the spool down. It also means the delivery is bearing smooth. It’s an open side bearing so you oil it every now n then.
You also get the upgraded carbon washers and a less bling spool (just)
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I’ve checked all the dimensions carefully and obviously fitted and tested it. They are perfectly safe to interchange.
Well done Dave good call.