DT125R ARCHIVE

Seanyftw · Guru

Need help finding a larger 520 front sprocket.

MDK · DTR Legend

call me stupid but this is for a dtr ? only ask as lose track that some on here now own other bikes

Calum122 · Guru

Ebay a seller called arracing. He sell loads of sprockets.

yamahayz125 · DTR Senior Member

Hi its the rear sprocket that's the problem it should be 13 front and 47 rear for 520 pitch the ttr250 and wr200 rear sprockets fit the dt rear hub

MDK · DTR Legend

did I hear somewhere the wr 125 also fit

wr sprockets ? http://www.ebay.co.uk/sch/i.html?_odkw=dtr+sprocket&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.Xwr+125++sprocket&_nkw=wr+125++sprocket&_sacat=0

have a ktm 125 alloy rear sprocket in the shed shure they fit also ?

ShaunyBoy · Guru

Mine is from a wr80 on std pitch, they do 520 for this bike??? (btw this is what the guy who sold me the sprocket told me, idk how true)

ShaunyBoy · Guru

Or yz80 can't remember now lol

Calum122 · Guru

Details on the front sprocket

Yamaha
Yz125 1987-2004
Wr200 1992-1994
Ty250 z 1993-1996
Yz85 2002-12

Seanyftw · Guru

MDK wrote:
call me stupid but this is for a dtr ? only ask as lose track that some on here now own other bikes

For my RE, would have specified if it was for another bike :P

Not really answering my question lol, 13/50 was great for acceleration (topped approx 85mph) but just need to go up a couple of teeth on the front sprocket as it's ragging the engine too much.

I'll see if i can message that ebay guy but tbh ebay is horrible when it comes to messaging people lol

-- Edited by Seanyftw on Wednesday 26th of June 2013 05:21:52 PM

Calum122 · Guru

My post was helpful seany. Tells you what other bikes use thr same sprockets. Also you could just have one made. But 85 is pretty awesome! For a 125 with good acceleration!

ShaunyBoy · Guru

Cal was you 13t front Amy good?

dread123 · Moderator

I have 13t on front running 520 conversion . Very quick acceleration not sure on top end due to running in at moment

ShaunyBoy · Guru

How does it ride on the chain guide/run thing... (Fixed to swing arm) ???

dread123 · Moderator

No issues with mine pal.noticed no extra wear at all on the guide.

ShaunyBoy · Guru

With the r125 I have a 48t rear, and can't find other sizes anywhere, stuck a 15t on the front for now, gonna see how that rides before trying 14

Seanyftw · Guru

Calum122 wrote:
My post was helpful seany. Tells you what other bikes use thr same sprockets. Also you could just have one made. But 85 is pretty awesome! For a 125 with good acceleration!

Ah i see, haha i'll look about then using that info, and not really after more top end just less screaming and thinking i have another gear when i'm flat out lol

Calum122 · Guru

I'm 12 tooth on the front. Seems mint.

Energized · DTR Legend

Seanyftw wrote:
Calum122 wrote:
My post was helpful seany. Tells you what other bikes use thr same sprockets. Also you could just have one made. But 85 is pretty awesome! For a 125 with good acceleration!
Ah i see, haha i'll look about then using that info, and not really after more top end just less screaming and thinking i have another gear when i'm flat out lol

Hahahaha yeah dude i know that feeling oh too well, need another gear with these sprockets lol!

Nathlaad · DTR Legend

5 gears on the DRZ, doing a ton then you try to go into 6th and realise you don't have it, then cry a little bit

Seanyftw · Guru

Found this website, maybe it's not a 15 tooth like i wanted but still could be good.

http://www.motorcycleraceparts.co.uk/product.php/3735/renthal-front-sprocket-dt125-r-520-conversion-1988-2007

Have ordered one so i guess i'll let you know once i have it fitted :)

-- Edited by Seanyftw on Friday 28th of June 2013 02:48:16 PM

dread123 · Moderator

any update on this? i am running 520 conversion -13t front and 46 back.. runs out of gearing far too quick! keep reaching for another gear about 50-60 and nothing hahaha.. gonna try 15 or 16t- think i shall leave the back? looking for a good supplier

dread123 · Moderator

Calum122 wrote:
Details on the front sprocket

Yamaha
Yz125 1987-2004
Wr200 1992-1994
Ty250 z 1993-1996
Yz85 2002-12

if i use one of those above..will those fit with 520 conversion? meaning i can go buy one and fit straight on without changing anything else?

dread123 · Moderator

01432 850055 raw power motorcycles

-- Edited by NEV on Wednesday 10th of July 2013 10:15:18 AM

dread123 · Moderator

Right managed to sort a 15 and 16t front sprocket for 520 conversion and not to dear either. Will let you know how it affects disability later in week.

dread123 · Moderator

Or ridability too lol

Energized · DTR Legend

Nice one got a link?

dread123 · Moderator

Cheers for t h e edit. N ever was good at making links lol.
Right 15t front sprocket fitted. Was a pain in backside. Had to grind away most of the plastic on chain guide for it to sit correctly and give some clearance. All done now, will let you know what difference it makes in morning.

dread123 · Moderator

Right this mod makes big difference to how bike rides..Find now that I'm not always in upper revs now and the ratio is lot better designed for road now. Think it would struggle in 6th if I had 16t front. Gonna have to grind some more from sprocket guide later today as I can sometimes hear it running on it.

Energized · DTR Legend

so whats the derdict more top end less acceleration? what you topping out at now?

dread123 · Moderator

verdict is less acceleration but more top end, motor isnt always screaming lthough thats how a 2 stroke should be ridden!

the dt isnt really that slow for accelaration regardless and this sprocket doesnt make it much slower but you can tell the difference :p still taking it easy on engine as not long rebuilt- but shouldnt be long before i can properly open it up : -still good to give her a little tester every now and again-blow the cobwebs off hahaha