DT125R FORUM

Well it looks like I have found the issue...

somewhere along the line someone has pikey bodged the front axle and spacers...

What should have had the sleeve spacer which has the 1mm wall which slides in to the 17mm ID bearing was clearly lost and someone had inserted a 40mm x 15mm bearing and used a spacer from an older DT in place of the correct one.. The joys of owning an unknown modified bike!

So I am now getting a spacer machined up and I should be good to go! It has only been holding me up since before christmas.. so now I can get the wheels fitted, get the bike back to mine and do the final few bits before MOT.. starting to get excited now

Picture of the spacer that I should have had below:

Versus the spacer that someone had installed and was somehow using..

yeah I believe they are definitely off a DTX. Interstingly enough I have just been reading that the supermoto have a 17mm front axle... and mine is definitely 15mm..

My brain is starting to scramble over this! Im wondering how on earth it worked before (really kicking myself for not photographing the bearings before taking them out)

Hi Calum,

Thanks for the reply, I tried the 35mm bearing but it rattles in the hub.. its 5mm too small on the OD as the hub opening is 40mm ID, this is where im becoming a bit stumped...

Wondered if anyone can kindly help..

Having a nightmare with wheel bearings in my 2005 dt125 supermoto.

Took the old wheel bearings out and threw them away and now the caliper side bearing I’m having a howler trying to get one to fit..

The hub seems to be 40mm ID and my spindle appears to be 15mm

Yet everywhere I’ve read online says my bearing should have a 17mm internal diameter, the speedo drive side I’ve got a 15mm is bearing, my sleeve is a 15mm ID and I can’t seem to find any bearing which is 40mm x 15mm to fit on the caliper side.

If I remember correctly (take this with a pinch of salt) that bearing I took out seemed wider than a normal bearing too.

Any help would be massively appreciated as I’m desperate to get it on the road and this is the only thing holding me back

Cheers guys!

Hi Guys,

Have been having a good read about wheel conversions, but I need to do the opposite of what most people are doing!

I have bought a DT125R SM, so came from the factory with supermoto wheels and the big front brake.

A lot of my friends go green laning and I want to be able to go with them hence the want to get a spare set of wheels that I can swap over to change it from supermoto to dirt wheels.

Currently the bike has 3BN01 rear hub on Takasago EXCEL SM rim, and the front I dont have the hub part number but I have attached a picture (I believe this is the same wheel used on the WR?)

Basically I need to get a spare set of dirt wheels which I can swap in when I want to go greenlaning so want to please find out from you guys what the best options are for doing so.

A guy in the bike shop said something about a brake bracket to be able to run a smaller front disc but didint know what was the best option to go for other than getting another two hubs and having some wheels built for me.

Can I use off the shelf wheel from another model of DT?

Any help would be much appreciated!

Thanks guys.

Chuck.

Firstly, hello! New to the forum, got my cbt tomorrow and picking up a dt125 hopefully next week

I’ve got a question for you about the suspension setup, I’m a heavier rider and from memory the suspension setup is likely going to be too soft for me in standard trim, what options have people used to get stiffer front and rear suspension? Is there a common front shock spring upgrade? And a drop in spring for the rear? Or do I need to buy new shocks?

Would be interested to hear any opinions on this..

Thank you!

Chuck.