Oh, I just checked and the part number 34X-22311-00-00 does fit the Open Enduro models (that had that specific chain guard fitted, my 1994 Open Enduro model did) and also the blue (non US) TTR's.
Number 19 is the part that I am talking about below-
Jarrah
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2000 TT-R250M-
Spoiler
Ported & polished, 73mm bore, Wizeco piston, US header pipe, FMF Q4, #150 main jet, #52.5 pilot jet, throttle stop screw adjusted, larger snorkel, GYT-R air filter, NGK Iridium spark plug, 14/51 gearing, NOS +
The chain guard and some other bits have just arrived in Athens so with luck will be with me on Monday....will be able to see then if all is well with 34X-22311-00-00 ! Sorry I missed your post about the 34K Brian.....
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1998 TTR 250 OE Custom Paint Job/Stainless Steel Footpegs, Polisport Hand Guards, Custom Seat, 13 T front sprocket, Wavy F/R Discs, KIWAV short compact mirrors,YUASA battery,Michelin T63 On/Off Enduro Tyres, Twin Air Filter, FMF Powercore 2 muffler