Triumphrat

kenscivic

Well i am 100% noob on modifying bikes.. I just want to stay out of the >3000 rpms and get out of them quicker


from what i understand.. 520 chain kit with 15 on front and 47 in the rear should do a world of difference correct?

P.S:

Any advice or tips on what to get please feel free + tell me where to get these parts at! haha.

Reppyboyo

I wouldent think chaning to a 520 chain would make any noticeable difference except when it came to your wallet, cheaper chains etc.

kenscivic

so stay with a 525 just change the sprocket size to 47?

petesgti

You are going to need a longer chain to go to a 47t rear. A kit from a place like 'sumofallparts' on ebay will run about $150 for a 520 conversion. They don't have any listed now but you can contact them to get one.

kenscivic

Oh okay so i just call them and state that i need a 520 conversion kit and tell them the sprocket size i want?

petesgti

Yes. They are pretty helpful.

Alekker

Ok, so the sumofallparts.net $150 deal sounds pretty good....but how do I get that front sprocket off? i'm due for a new chain and figure I might just go with the whole set (14/44 with the 520 chain) but I dont want to have to bring it into the dealer. Any suggestions?

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petesgti

NOTE: I don't think this is the proper way to do it, but it worked for me.

I kept the chain on and and stuck a board in the rear wheel and put the bike in neutral to keep the engine from turning over. I forget the size of the socket, it might have been 32mm. Mine actually was not on that tight but I used the board in the whell to tighten it back on.

rustbucket

I didn't have any problems doing the swap myself. The front sprocket wasn't too bad to get off. It's important to take note of how the lock washer is installed and make sure it ends up the same way.

I ordered the parts from sumofallparts. I bought a chainbreaker/riveting tool from them to cut the old chain and put the new one on for ~$50 extra.

I'd reccomend going with a 15 front sprocket and changing the ratio with the rear sprocket. The 14 tooth fronts were OEM on earlier Triumphs, and they changed to a 15t because some people had problems with the chain rub strip wearing out quickly (of course some people had no problems at all, but it's cheap insurance)

I expounded at length in this post: Clicky

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