XT600e rear sprocket
 

Standard rear is 45t so I may go with a 44t or 43t next. Any ideas where you can get any, as I can only find 45s

Ebay.de has some, the rear sprocket is called kettenrad, så search for something like "Xt 600 kettenrad 43"

Jt sprockets.

Wemoto also stock smaller or bigger. Call them if its not on their website. EBay too...

www.touringted.com

BTR (Bike Torque Racing) at Frome, Somerset. Seemed like a good bunch when I met them at the NEC Bike Show and ordered one from them for delivery from Frome. Very quick it was, too - although I haven't yet fitted as, like you, I'm only changing the gearing (down-gearing, though, unlike yourself), so no rush.

Probably better to change the chain and front sprocket at the same time.

For that 44-tooth sprocket, though, try BTR at URL = http://www.biketorqueracing.co.uk/results/1250544. (strangely, include that dot on the end). Top make (AFAM), good price, good seller. They don't seem to do the equivalent 43-toother, though.

The "Alternative Sizes Available" seems a bit haphazard but a fresh search will find the 45-toother, etc., for comparison.

Have you checked out Gearing Commander: Motorcycle Speed, RPM, Chain & Sprockets Calculator ?

HTH

Cheers will have a look. I am doing both sprocket and chain. I just need a rear sprocket to complete my set. Seemed to make sense to go to a 43 on rear and get a 14 front for trail days and use my 15 for travelling days on the road

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If your looking to gear down, you would need a bigger rear , not smaller. A 46 or 47 would be better. By going to 43/14 over 45/15 you would only be gaining a marginal lower ratio, equivalent to 3-4mph less top end at the same rpm(if that makes sense :cool4:)

Don't be temped to go too small on the back. I tried a 15/41 and thr bike couldn't power it. Awful.

15/43 should be the longest really. 15/44 is better if you can ride slower..

I have 14/38 on mine right now(the 38 came with the bike) for some longer rides. It pulls itself just barely at 70-75mph. My normal is 14/42 for short hops and in town. Don't know about outside US bikes but mine is running 3500rpm @60mph right now, which seems kind of high but still barely pull itself.

I usually run 16/47, should give a little less wear on the sprockets, due to them being larger. I use a 108 link chain, and have the possibility to go down to 15 and 14cs sprocket for tight offroad-stuff.

Our bikes doesnt pull 5th gear to redline stock, so even 1 tooth less on the rear makes the bike more sluggish. But its really nice to cruise with the lower rpms it brings, but you wil loose top speed

So would a rear sprocket for say a 91 year xt be the same stud pattern as for a newer E model. Cheers for all advice so far. It could be simpler mind to get a longer link chain and go with a 47 and a 16 like jens as they are available from wemoto

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How is the difference when you use 16/47 compared to original?

Sent from my fantastic keabord in gold...

I see what Xtrock is thinking :rolleyes2:, I was always wondering if there is a difference in how good a motor pulls a certain ratio, say 16/47 compared to 14/41, both of which end up at a very close final ratio (2.936/2.928). Would any difference be due to the diameter of the sprockets and how much parasitic friction is caused by smaller diameter sprockets. My head is hurting now. jeiger

Yep: rear sprockets from earlier XT6s will fit, even going back to the XT550. Not the front sprocket, though.

I am finding that when I get to fast motorway speeds (UK) I am starting to hang onto the bars due to the massive windblast, and figured that I could better use a (down-geared) 14/46 combination generally, same chain, swapping to 14/48 for the trails. First and second gears on the XT6E are rather high for off-tarmac.

Weird what different people find best. I haven't done the massive amount of off roading on my XT that I previously did on my XRs,DRZs and the like but on Strata Florida and up into Mid wales on stoney trails I have found the standard 15/45 pretty much useable, quite often in 2nd or 3rd gear with speed and ease. Obviously a 14t on the front would make it a bit gruntier for the slower stuff, but Im in no rush for too much off road these days.
I am riding on long A roads frequently and at the moment Im sitting with speedo showing 70mph at about4500 rpm. I am thinking that dropping that speed to about 4k rpm may be much sweeter

Yes drop those rpms, if it can pull it. 500rpms x 60 = 30,000 revolutions that motor didn't have to turn, over time that will really, really add up to less wear. Tire choice and air pressure also will have effect on what gearing you can run. If no real offroading is going to be done, a highway tire will have considerably lees rolling resistance.

I have only tried 14 in front and a didnt like it at all..

Yes was thinking of changing tyres, may get some siracs or one of the cats paw style tyres like Heidenau as I like those.

tires? I'm looking at the new Continental TrailAttack 2! I've done 7k HARD kms on my TrailAttacks and they still hold like glue to the road!

Just ordered a 43 rear from wemoto apparently its listed for a 660 xtz. Lets hope it fits as I've got a 280 mile road ride next week Ha

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Why you going down? 45/15=3 43/15=2,86 iam thinking that you lose torque and maybe get a little more high speed? Jens have 47/16 = 2,94 and i would think you can feel any difference to 45/15? When i changed to 45/14=3,21 i got more torque but i didnt like the gearing in the beginning, 1 and 2 gear was to short.

Rear Sprocket
 

My 86 had a 15 42 stock. That is a good ratio for street only, but a little too tall for trail work in the mountains. Early on I went with a 14 42 which is a 1 to 3 ratio and works great!. I just replaced both sprockets and chain with a new xring chain with 15 stock and 45 sunstar which is of course 1 to 3. I like that ratio as I either am running around town or in the mountains. I like the larger sizes as the chain has to "bend" around a larger radius and should last longer.

I can only go on the changes I used to make on my xr400, which was similar to where I am now. Yesterday I went to Worcester from Cardiff so I chose to go M4m5 and 65/70mph was up to 4500 rpm and it was ok. 70 is a nice speed for this for my own personal views. If by dropping a couple of teeth on the rear just drops it closer to 4k rpm or a tad above I will feel the bike will thrum along just fine. I have got to buy new chain and sprocket anyway as they are fubar so I may as well try something different

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xtz660 front and rear sprockets is the same as xt600e, so yeah, they fit.

The earlier xt600 models from the 80's-ish had different internal gearing, so remember that when we try to compare. Also, different size reartires can easely alter the "gearing".

You dont cant gain torque by changing the gearing, you cant force the bike to gain more power like that. But you will have more torque avalible at the same rpm, with a "shorter" gearing, compared to a "longer" (14/45 compared to fx 16/45)

Yes i didnt write that correct, bike dont get more torque but you change the way of using the bikes torque. But why use 16/47 when its so close to the original?

Because I think thats best for me, so thats what I order when I buy new chainkits. Also, the bigger sprockets should give sligthly less wear.

I have 2 sets of front and rear wheels, and sprocets: 13, 14, 15, 16, 42, 45, 46 and 47. I use the bike for a lot of different stuff, and have played around a lot with sprockes to find what suits me best, for various situations.

I've made a new cover for the CS sprocket, and have a list on my phone where the snailadjuster have to me with the different sprockets, to give a correct chainslack. That meas I can change the CS sprocket in just about 5minutes.

Going from 16/47 to 14/47 really changes the bike. That combined with 2 sets of wheels, one for tarmac, and one for offroad, you can make it a completely different bike in around 20-30minutes.

Oeh, sorry, got carried away. Hope it explains it :oops2:

Well Ive had new chain and sprockets fitted. I already had a sunstar 15t in my garage that I never put on my old 660Tenere and I bought a 43t JT sprocket from wemoto. I couldn't undo the front sprocket nut so I took it down my local shop and had him do it for 20 quid and I bought a JT X ring chain from him anyway for £44.
What I never knew.... because I never looked was I was running a 14t front and a 45t rear. I rekoned I must have been standard gearing as the performance of the bike seemed to be as Id had read about i.e about a 65 mph cruising speed at about 4k rpm.
however now on a 15t/43 combo its been transformed on the road, nice spread between gears and now at 70 mph its at 4k rpm. even with a tom tom gps on at 70 the gps is showing 68mph.
Putting that into perspective for me. My 09 Tenere 660 that I sold as I was skint!! Felt pretty quick and cruised on the motorways at 75/80 mph but the electronic speedos on these are known to be 10% over !!!
So the old 600 XT is producing the goods for me so far

20quid to undo the front sprocket nut? that's crazy! :o
you can almost buy an air impact wrench and do it yourself for that price!

anyway, at least you got it sorted!
Safe driving! ;)

Ha no I tried to undo that first and then got him to do the lot for 20 quid.

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One thing I did forget to add, which may be good for others for future reference is the sprocket is a JT-857-43. Listed for a MZ Mastiff, Xt600ZE,XV250 and XTZ660 89-96