Triumphrat

evalu8or

I have a 04 Thruxton with all the regular up-grades and mods plus a little extra. I need a new chain and want to change to a 520 conversion.
My question is has any of you done this with the twins and what is the best combination for this bike w/out throwing the speed way out. I'm running a 17T front and stock 43T rear right now and quite like it. Its fun in town and still ok on the HYW.
The closest front sprocket I can find for the 520 conversion is 16T, what should I use on the rear to keep it close to what I have now?

rbrian_taylor

http://www.triumphperformanceusa.com...products_id=21

No personal experience.

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Brian

http://www.triumphrat.net/memberalbu...ry.php/cat/559

dirtynick

Going down 1 tooth in the front is the equivalent to adding 2.5 teeth in the rear. So if you got a 16 tooth front sprocket if you went with a 41 or a 40 tooth rear your gearing would be close to what you currently have. The 40 would be a little taller gearing & the 41 would be a little shorter.

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The only thing that I can't fix is the loose nut between the seat & the bars....
Dirtynick, Internal Combustion Technician.
My Custom Thruxton project / The Dirty Brit bike

evalu8or

Thanks Guys, I've already left a message with Triumph Performance USA, just waiting for a reply now. I'll let you know how I make out. Thank again for the input.