48T Sprocket install questions

[Slug]

I have a 2007 FZ6 with stock sprockets and chain. After reading in this and other forums, I want to change the rear sprocket from a 46T to a 48T (+2), probably with a Vortex model. I would have the dealer do this at my 4000mi service next month. I will be keeping the stock front sprocket. I know I will want a speedohealer. I do not wish to do a 520 conversion.

1) Will the stock chain fit without modification?
2) Should I replace the chain simply because it will have 4000mi on it? I have put half the miles on this bike and they have not been hard miles.

Thanks for your input.

 

[TownsendsFJR1300]

4000 miles on that chain, if maintained is still new. As for of it will fit, it will be close as you'll need a slightly longer chain. Does it look like there's much room to adjust the rear wheel forward?

Looking at my 07, (with a little more mileage) it appears the wheel will move forward enough, as your only going up 2 teeth.

 

[tomari]

why dont you do a -1 in front? i thing its the same!

 

[Bikebiz]

-1 not the same thing (it would be almost the same as a +3 rear), ie +2 rear will be slightly taller. WIth 0kms it won't fit. with 4,000miles I am 99% sure it will fit. There should be enough slack.

Can I recommend a Stealth sprocket? They're aluminium in the centre like the Vortex ones for light weight, but are steel at the teeth for far better durability.

 

[Slug]

I'll look into the Stealth. Thanks for everyone's input.

 

[Discofrank]

change the chain and the frotn sprocket at the same time
do them as a set

as the chain will have worn into the sprocket teeth
a worn chain on a new sprocket will wear teh new sprocket out faster

 

[Slug]

UPDATE: I finally got a sprocket change at my 4000mi service. Replaced front with a 16T steel Supersprox and the rear with a 48T Supersprox Stealth. The difference down low at stoplights is nice, but not too much. I have noticed the new sprockets are louder (probably the front) such that I can hear them while riding. I would think that might improve some as they wear? I kept the stock chain is it is relatively new and in good shape. The bike rides great, definitely a worthwhile mod for me. I am probably about 1000RPMs higher in 6th gear at 80MPH than I was before. Speedo was off by exactly 10% as measured by GPS, cured fantastically with a speedohealer. The speedohealer could not have been easier to install.

Anyway, thanks for everyone's help!