Piston part numbers? [Archive]

416exmx

04-02-2005, 06:29 PM

9177E
1694M09500

are the numbers on the piston. Its in a YZ426 and is supposed to be a 440. Any idea what piston this is?

MIKE400EX

04-02-2005, 08:07 PM

Well that's a Wiseco p/n (1694M09500). Probably 95mm bore. I'm on a dial up now so I'll let you look it up on the Wiseco.com site!:)

416exmx

04-02-2005, 09:10 PM

Yeah I figured it out. Looks like stock bore. Should I really have expected it to have been a 440? I bought the motor off here.