DT125R FORUM

@jonne123 my current 2000 dtr/ blue has red rear shock spring but my old 88 dtr black/red had a pink spring. Don't know if it's a colour code that actually means anything.

@dtStevie98 See these threads bud, they will give you some ideas. If you can get hold of the full Aprilia MX 125 front end it will save you a lot of hassle, if not any other bike like a KTM/Yammy/Honda etc can be made to fit;

https://dt125r.co.uk/topic/1020/dtdr-build

And @Calum did a through guide on bearing cups here;

https://dt125r.co.uk/topic/17/usd-conversion-bearing-cup-method

@Glynn123 said in WR 426f Forks on a DT:

Hi, I've just grabbed myself a real cheap set of WR 426f forks and front brake setup, still need to get triple clamps for it but looking to attempt to get it working on my DT. My DT currently has a wr200 front alloy wheel and I have an oversize disc which im 99% sure is the same size as the WR 426 front brake takes. My main problem, I have tackled many problems on bikes and could do anything engine related on the DT, but ive never tackled a fork swap, so im a little stumped on what im going to have to do. I have an old lathe and many other manufacturing tools, so I can make spacers etc if necessary. Anyone ever attempted this swap? if so help would be greatly appreciated.
Cheers!
Glynn

How did you get on with this? as i have just purchased some WR 426 F forks for mine

@itstom I literally tell you in that post.

@Calum I m hoping to find a light pair of forks an make the wheel fit

Yt2015 bearings

A little bit off topic...but yes/no.

It may do, but what you'll really notice is the spread of power across the rev range.

@jakeyboy get yourself on a website called Fowler’s find your year and bike and there will be a breakdown with all parts and part numbers

@NINJA I do like the look of the yss shock

Worth it if that shock is rebuildable otherwise get a YSS one new as it's now so old it's probably worn out by now

486ml + or - 2.5ml so just under 1/2 a litre of oil.

The suspension effect you get from forks comes from the air left inside the fork, after all you cannot compress a liquid. If you change to thicker oil and try filling it up a bit more you will effectively stiffen the forks. Just make sure you still have air in them, don't fill it right up cause then you won't have any suspension.

Would not hurt to put fresh oil in and seals, make sure you clean all the gunk out of the fork legs, progressive fork springs would be significant improvement. If you are using new springs would keep same oil weight to start off, otherwise could be over the top. Ask spring suppliers for reccomended weight come to that

@ryanjimccfc The shocks for all 3 bikes are 410mm in length and the YSS item is listed as being compatible for all 3 bikes, which means it should be a straight swap for the OEM unit. The YSS unit's also offer adjustable pre-load and compression too, just the same as the DT200/Lanza's units just without the external reservoir, so you are getting pretty much the same spec as a used 200 unit all in one package. Plus I think the YSS has a stiffer spring over the original shock? So all_in_all it's a simpler upgrade with less hassle of fitting and mounting the res. If you have the cash then I would go for a new and improved shock over an old used unit everytime. ;)

https://www.ebay.co.uk/itm/YSS-REAR-SHOCK-YAMAHA-DT-R-200-1989-2006-SHOCK-ABSORBER-331/183127097768?epid=24009232077&hash=item2aa339c1a8:g:ai4AAOSwRH5XKxXH

https://www.ebay.co.uk/itm/YSS-SHOCK-ABSORBER-ADJUSTABLE-REAR-MONO-For-Yamaha-DT-125-R/142012163491?epid=517329238&hash=item211095a5a3:g:2mcAAOSwnFZXUAUJ

In terms of stiffness I can't say I felt much difference, it feels slightly higher with the R damper.

@2stroketerry well maybe my experience it bet my cat on it being the dog bone semi seized

Yeah heard good stuff about that

Starts to wobble at 70mph and greater when when I suddenly let off the throttle with the clutch engaged? As long as throttle is on, there is no wobble at all past 70mph, although the faster I go before I let off the more violent it gets.

All bearings are fine as are swinging arm bearings, bushes etc. Tyres are
bridgestone nobblies standard size.

@darty said in Rear dog link bolt diameter:

@NINJA Your mad, 1mm clearance is not acceptable for concentric fits under load here??

Thanks for enlightening me!!! :)