6k rpm limit

[Rat80y]

Hi
Im finding disagreeing information

I have a 2000 dt125r, I recently just got it.

When I look online (and ask AI) it says it should rev past this, up to 10k rpm

But when my friend looks online he says it says this is what it is restricted to to meet the CBT limits.

I just want to make sure which one of us is correct. Ive just done new fuel and plug, went to do the gearbox fluid and the sumpbolt ths stretched and bent, fml, so I have one on order (as well as a carb kit )

[HOTSHOT III]

@Rat80y The drain bolt stretching is a common thing on the DTR, IMO it's a design feature as if you overtighten it it usually snaps. Whilst being a right PITA to get the clutch cover off and wind out the broken part, it does mean the thread in the crankcase is saved (new crankcases = much more difficult/expensive than taking off an engine cover) so I hope you've ordered genuine from Fowlers (get a load of copper washers as well for future gearbox oil changes). Tightening torque is 15Nm so it's also well worth getting yourself a 1/4" drive torque wrench like this one:

https://planetx.co.uk/products/jobsworth-pro-torque-wrench-set-1

There is some truth in both your AI source and what your friend said. In the days of the 12bhp learner restriction, DTRs with the powervalve pinned shut would struggle to rev beyond 6k rpm but properly set up/derestricted/full power it should rev to around 10k.