DT125R FORUM

Merry Christmas everyone!

@HOTSHOT-III Hopefully the issue gets resolved as I don't want to lose the data they're hosting. The important stuff I ought to host here to guarantee it isn't lost.

Hi Glenn welcome to the Forum. It's very quiet on here these days, everything migrated to Meta a long time ago, but I feel the real enthusiasts will remain here :) Sounds like you've got a wealth of experience with these bikes, almost feels criminal to be breaking them nowadays though, price of them are soaring.

@Calum said: These were almost a nightmare to source 16 years ago, I can't imagine trying to source one now. My bike was stolen in 2010 and they smashed my headlight, the only one I could find at the time at one of the lugs snapped off. Looks like there is one for sale on eBay: https://www.ebay.co.uk/itm/117220896053?_skw=DT125re+headlight&itmmeta=01KTM8B5217RAZTYS7W99928FR&hash=item1b4ae8ed35:g:y7gAAeSwpAdqHbG7&itmprp=enc%3AAQALAAAA0GfYFPkwiKCW4ZNSs2u11xBZmLIU--K9J71U9lN1jJvKGElmcMKBjUzhn5JV3gvFr%2BI2mNwns0SlbUycS%2Bw9y3Qsk%2FC9Cp56dPrHcSEz%2FAr0Zq5el9BEEdpE--23lnRC8fU0%2Fsn13ryM871mf1jmM1dUjkmiSvaLNgJjb67pd3KfdVjuND8nPx720y4ajz9BPqgS8GUW%2FCNLpWF1MTDMkYcIXC7cHLcpOan7woIP1A2k2vjESEOPdlk4W2oy4yUcxyO%2BXWy347GqH%2BHrWnu%2F2Og%3D|tkp%3ABk9SR5bRrIjVZw Looks like there are some copies on eBay as well: https://www.ebay.co.uk/itm/188014865985?_skw=DT125re+headlight&itmmeta=01KTM8B521KCQCFP6HVFB9B97Z&hash=item2bc68f2e41:g:v4oAAeSwOt5pf0Q6&itmprp=enc%3AAQALAAAA8GfYFPkwiKCW4ZNSs2u11xBGAd3jIpQ1I%2FPeoct0WRAbZx%2BSpsbDaUmQIjZgqRPgUJo7nG5bGWKGBRZtJJ4k6kWqRTJdLi2QjCbWA%2FBE6jgcnSjbxqmpxc5alD7AkePHPryhwNx3wJMQx9Nn2c%2FJBb%2FaX0A7Z%2BlEzJ6pVoqrlh3sZUh2UZ%2BqkVZwe2vBfwA2F39HuV9O1D2z%2FSIMHbNWWFAOiiE%2BG%2F8xlRqkrAHFOwt3oKAIwYBpeHVG82hZBHdODyJwGkKG5Ef9gkphJk0fgSnlvoW%2FpV6wkCrHIDEqggbFJ3LfV5W5qwYpTWvJNjb1RA%3D%3D|tkp%3ABk9SR5bRrIjVZw Thanks for helping and sorry to hear about the theft/ damage. I had a different bike stolen around the same time period and wasn’t so fortunate with them burning it 2 doors down in a wheel barrow - I can only assume the chain & locks were giving them trouble. I purchased the unit from the first link as it’s stock and doesn’t look in too bad shape - I’ll hopefully be able to do some sort of refurb with the damaged unit I have right now and keep it as a spare now knowing their scarcity. Thank again! - one step closer to getting her back on the road.

Hi there, You're literally describing the characteristics of the big bore engine. It's not going to rev like the OEM setup, a big bore kit will drop over revs and this sounds like it's in the right ball park figure. I'm not saying 9500 is the limit, but this is definitely past its peak power and I wouldn't expect any power gains past here. The next step for retaining revvibility will involve more drastic tuning. Zeeltronic CDI Ignition System Allows you to have a fully derestricted ignition system Customise powervalve for the Athena kit Squeeze out a few more RPMs Cylinder porting Greater volumetric airflow through the cylinder Allowing it to breathe easier Transfer window porting The transfer windows most likely need porting due to the larger bore Gasket match the cylinder to the cases Porting the cylinder base removing the obstruction to airflow from the reedvalve Air flow is greatly disturbed by the cylinder spigot protruding into the intake Fit VForce4 Reed Block from Blaster Proven to increase mid-range and overrev performance Boyseen dual stage reeds can also help but seeing as your requirement is literally at the top end of the powercurve then you don't want dual stage [image: 03.jpg] [image: 09.jpg] [image: 13.jpg] Just bear in mind, you're now demanding a lot more from the engine than stock and seeing as you're seeking peak power you're going to want supporting mods. Uprated clutch springs to avoid clutch slipping Forged connect rod to resist rod stretch/fatigue Forged light weight piston to withstand the demands

Oh okay interesting, are you able to fit a kick start and ditch the starter motor? The DTRE has a starter so maybe that frame is a better fit.

Reposting images as Imgur no longer viable in the UK. [image: 172%20-%20RKvVG9S.jpg] [image: 175%20-%2030mHLD0.jpg] [image: 178%20-%2023slXQt.jpg] [image: 181%20-%20iCP0fZ8.jpg] [image: 184%20-%20tOhfHg1.png] [image: 187%20-%201hnmKEU.jpg] [image: 190%20-%20oUbxk0z.jpg] [image: 173%20-%205eiRy2T.jpg] [image: 176%20-%20vwLWHZF.jpg] [image: 179%20-%20bXb0nl3.jpg] [image: 182%20-%20CtG2lVr.jpg] [image: 185%20-%20w1OJzhM.jpg] [image: 188%20-%20r36T1Jr.jpg] [image: 192%20-%20maZwvbZ.png] [image: 174%20-%20lzFJamn.jpg] [image: 177%20-%20Uy9Bc1K.jpg] [image: 180%20-%20AxRx5hW.jpg] [image: 183%20-%20ytEtu9x.jpg] [image: 186%20-%20KzceqwW.jpg] [image: 189%20-%20NWjHxqP.jpg]