Anyone know where I can get an aftermarket 14 tooth front for a z in aus? Thanks

Sorry Tomasz
completly missed your post and don't have any GPX stuff i'm just heading for the hills and see where i end up !!!
Phil

On my z I tried a 14 front sprocket with oem 45 rear. Gearing felt great for fast dirt roads, was much better for tight work and was borderline acceptable for hwy runs.
Time for a new set so bought 15/48 525 set which I thought would be same as 14/45. The 15/48 is actually slightly lower geared than 14/45.
So now am wondering if anyone knows if a 112 link chain will fit 16/48 combo?

http://www.sprocketcalculator.com/

Sent from my Lumina using Tapatalk

Thanks SiKa but the calculator is telling me 118 links which is incorrect.
Anyone else use 16/48 and know how many links you have?

One or two extra links will do the job, but that is entirely dependent on whereabouts you're axle is currently sitting in the slot in the swing arm with your current setup. If it's in the middle of the adjustment range, then one link may well do. If it's right at the back (unlikely) then you might get away with the chain you've got. If it's up in the first half then two links are probably necessary. Just make sure you need to leave yourself enough room for future adjustment.

It's also worth noting that the difference between the rear axle being at the front and the back of the adjustment slot has a surprisingly significant effect on the overall geometry and handling of a motorcycle. Ideally you want to be somewhere in the middle.

16/48 will give you exactly the same final drive ratio (1:3) as stock 15/45 - is that want you want to achieve?

You might be better off sticking with the chain you've got and biting the bullet and getting a 47T rear, which will give you slightly lower gearing the stock, but not as low as 14/45. Buy the time you've bought the extra chain links and a new front sprocket, a new rear sprocket isn't going to work out any dearer? Be easier job too?

I don't know for sure (never heard of anyone using 16/48), but problems may arise with a 16/48 setup due to the fact the upper and lower runs of the chain will be quite a bit further apart from each other compared with stock. This could pose issues with the chain running heavily (and for longer) on the upper and lower tensioner rollers at full compression and full extension of the rear shock. As a minimum it would be worth changing the fixed OE rollers for poly versions with a proper roller bearing.

Thanks Pleiades for your response. Good point about the chain being a lot further apart with 16/48. The reason I'm asking is I've just fitted 15/48 and am about to go on a run mainly open tar roads. With 15/48 @ 100k's according to GPS revs are 4500. My actual speedo reads 118kph. Thought a quick cheaper way to give longer legs would be wack a 16 on. Love the 15/48 for open and tightest dirt. A 46 is probably what I should get.
Thanks for helping chew the fat on this subject.