'82 GS450 - 520 Conversion?

[pancakeshake]

I was looking to convert my GS 450 to a 520 chain sprocket set.

I found some front sprockets that will fit the bike, but I cant seem to find any rear sprockets.

Does anybody know the BCD (bolt center diameter) of the rear sprocket on these bikes? And / Or where I could find a 520 rear sprocket for this bike?

Thanks!

[DannyMotor]

Why not 530? They're ready to be had in kits on e-bay.

[salty_monk]

I have a 42T with 2k miles on it that is GS pattern if that's of any use... Had it on my 750 but switched it out for a bigger one.

It's a JT sprocket & I ordered it from Z1 Enterprises. Sure they could sort you out with a new one too... give them a call

[pancakeshake]

I have a 42T with 2k miles on it that is GS pattern if that's of any use... Had it on my 750 but switched it out for a bigger one.

It's a JT sprocket & I ordered it from Z1 Enterprises. Sure they could sort you out with a new one too... give them a call

Thanks! That site gave me the right measurements I need. Now to find a 520 set...

And the 520 chain conversion cuts down a huge amount on rotational weight and provides better acceleration.

I wen from a 525 to a 520 on my CBR and noticed a difference immediately.