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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Chassis » Suspension - Forks, Isolators, Shocks, and Swingarm » Converting XB Forks to Just Sportbike Lowers? « Previous Next »

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Absurded
Posted on Thursday, January 03, 2019 - 11:59 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Currently I am running 2003 XB9R showa cartridge forks w/41mm stanchions/lower legs. I want to do a conversion to a super light front wheel with conventional brake rotor setup, without having to do a complete fork, tree, and stem swap. So, my thoughts are to just change the lower legs or just the feet to a comparable showa tube size from a sportbike. Has anyone done or know of this being done by someone? Thanks
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Kdkerr2
Posted on Thursday, January 17, 2019 - 07:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The brake conversion can be done but you need to have custom brake adapter fabbed to bolt on the Buell hard points on the slider. Usually they can be made out of 1/2" [.500"] T6 aluminum flat stock. I assume by conventional brake rotor you mean twin 320mm floating rotors. What kind of calipers are you planning to use? Send me a PM to kdkerr2@gmail.com for more info. Converting to a different super light front wheel can be problematic. Most of the crotch rockets run a bigger front axle then the Buells. Finding an axle which will fit on the Buell sliders can also be problematic. Sometimes you can change out the wheel bearings to make them fit to the wheel. You will probably have to have new wheel bearing spacers made for the new wheel set up. Also another problem is that these new light weight wheels will usually have a different bolt hole pattern for the rotors. Using the original Buell wheels is not such a bad idea. They are fairly light weight and use a Harley bolt hole pattern and you can get rotors of diameters, 292, 300, 320mm and 13" and 14" diameters including the original Buell rotors.
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Absurded
Posted on Friday, January 18, 2019 - 09:03 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The front wheel I would like to run is a PMFR race wheel..plenty of pics on google...The one I have is already fitted with 25mm axle bearings..BUT..The XB caliper carrier foot intrudes too far to the interior of the PMFR wheel and hub to get any sensible rotor alignment with an adapted bracket..I also have some tubeframe showa forks that I believe the tubes would swap and the caliper/bracket etc. would be a much better alignment scenario..I don't want to run the huge tubeframe front rotor... I'm hoping to adapt a Willwood GP200 caliper and 10inch rotor...
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