DT125X 2005-2006 standard bore size is 56.00mm. DT125R, DT125RE 1988-2007. PISTON KIT. + 1.00m oversize piston kit. (57.00mm bore size) . MAY BE RUNNING ON THE SIMILAR TZR125 PISTON. PHOTO SHOWS THE PISTON KIT BEING SOLD.
Yamaha DT125R piston kit +0.50 o/s (1988-2007) bore size 56.50mm, DT125X (05/06)
Yamaha RXS100 piston kit (1983-1996) standard 50.00mm bore, new, JAPANESE
Yamaha TZR250 piston kit +0.50mm o/s (1987-1992 parallel twin) 56.90mm bore size
Yamaha TZR125L piston kit standard (1987-1993) 56.40mm bore size - Japanese
Piston Kit Yamaha STD TZR DT125R TDR TZR250 56.40mm
Piston Kit Yamaha STD TZR,DT125R,TDR,TZR250(56.40mm)