DT125R FORUM

@Irongamer727 that's really bad! im going to take everyone else advice and get a 4FU or 3MB cylinder instead with a aftermarket pipe and carb

@DanRacing thanks for the advice I'm probably going to end up doing that as I don't have a very big budget and wouldn't like to to a lot of work like that. I will look into the 4FU cylinder. Where would be a place i could get one of them?

@andrewj1680 said in Wr200 engine into dtr:

Direct fit exactly the same as the original motor along with the standard wr200 tm30ss carb atm and a dt230 airbox boot

what about the exhaust? is it stock or aftermarket? thinking of doing something similar

@Darty said in Athina 170cc bore kit recommendations:

I would recommend looking at tuning a 3MB or 4FU barrel and cylinder head rather than spending £450 on the Athena kit.
I had a tuned TZR 134cc engine with Mikuni TM32 and Ignitech ignition upgrade, and it would pull hard to 85mph in 5th gear, all around the same cost as an Athena Kit alone.

Thanks Darty for the responce but im fairly new to the DTR tuning. could you tell me what the difference between the 3MB and 4FU cylinder is. and what jetting you were running on your Mikuni while on that setup

hi, my names Harvey and am thinking of buying a DT/R/RE/X to tune to 170 with an athina kit but am unable to find the recommended carb/jetting, downpipe, cdi and sprocket ratios to run with the kit. I do have previous experience with tuning bikes as I have restored and tuned a Yamaha DT50MX.
Any help would be greatly appreciated

• Thanks, Harvey