Inner tube size?

[kiroh]

What's the size of the rear inner tube?

Options from the Busters shop:

200/225-17
225/250-17
275/300-17

And can I use 18" inner tube on a 17" rim?

[Peltsi]

None of them fits. The size you should be lookin for is more like 4.50-5,10. Those tubes you have found are for 80cc motocross front tire.

[kiroh]

None of them fits. The size you should be lookin for is more like 4.50-5,10. Those tubes you have found are for 80cc motocross front tire.

Thanks Peltsi.

Any idea about fitting an 18" inner tube on a 17" rim?

[Peltsi]

Why 18"? Is it hard to get correct size in there? I guess London is such a small place you have to take what you get.

[Mudwiz]

You could fit a 18", like a 21" front will also go in the back, but I'd only do it until I could sort the whole thing out. Extra rubber moves etc and creates extra friction, increaseing risks of punctures, 'specially impact punctures. I run my rear with a rimlock, and lube the tube with vaseline before I put it in (or er missus!) Theory is that it should reduce heat build up and "Grap" between tube and tyre/rim, minimising puncture risk. (Thats at lower pressures though, ish 14psi.)

Most bike shops should have ultra heavy duty tubes in 17" and 21", but could definately order them in, ish £15-18 per tube.

[kiroh]

Surprisingly, Busters doesn't sell 17" inner tube to fit. I've been looking at racespec.co.uk as well and they don't do it either. That's why I'm considering other options...

Thanks anyway.

[NismO]

I just bought a replacement front tube from these guys;
http://www.dirtbikestore.co.uk/cgi/s...190#a770_2d190

I got the 90-21 front can someone confirm I've ordered the right one?? (It hasn't arrived yet)
I went for the heavy duty, but they do extra heavy duty too.

[Peltsi]

That link of yours don´t seem to be working. We´ll just the same. You can´t go seriously wrong with 21" front tire tube. It doestn´t matter if it's 80/90-21 or 90/90-21. There really isn´t too much other sizes awailable.

Heavy duty tubes are fine once get it it. It´s a bit harder job to put in and there's a speed limit atleast some of them(150kmh).

[Hagrid]

WeMoto ?

Thats where I got mine...