just converting my wifes 90 and have got a 125 barrel 19mm carb and sports exhaust, i am about to put in a 4 speed box and would like to know if i should up the primary gears from the 90 to the primavera?would this give her a usable bike that still pulls without revvimg to much?
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- jonny snatchsniffer
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- Joined: Mon Jan 12, 2009 11:53 am
- Location: camberley, surrey
i wouldnt use the 90 primarys as they are far too short, the primmy/pk125 primarys will be fine, they are 24/61, another option is 27/69, a little shorter than 24/61
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