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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Chassis » Suspension - Forks, Isolators, Shocks, and Swingarm » Archive through October 31, 2009 » 04 XBR with 41mm Forks..upgrade options ??? « Previous Next »

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Xbpete
Posted on Saturday, December 27, 2008 - 01:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Unmodified 1203cc powered 04 'Bolt with 41mm forks, for other particulars, check my profile on the bike set-up, 170 lb rider.

Question... would springs and Penske kit be a better cost effective set up than switching to a lower tree and later 43mm tubes. Is the steering head the same or will modification be needed...

Hoping Slaughter can add some insight and direction, will be a combination track / street application, maybe 8 to 10 track days... old fart (me@!) at the controls...

(Message edited by xbpete on December 27, 2008)

(Message edited by xbpete on December 27, 2008)
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Slaughter
Posted on Sunday, December 28, 2008 - 11:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hmmmm...

You'd probably be much better off keeping the 41mm forks and re-valving/re-springing them.

The slight increase in flex-stiffness with the bigger tubes won't buy you NEARLY as much as re-springing/re-valvling the stock 41mm forks... and besides, you're still really going to have to re-valve/re-spring the bigger forks to see ANY improvement.

The only reason I went to the larger forks was that I destroyed my 41mm in the wreck when the engine/swingarm got ripped out of the chassis/forks in a tumbling end-over-end.
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