2004 Yamaha YZ 125 "piston" Questions

SEIZED PISTON I jus rebuilt my top end with a new ring and hone job on my 89 yz 125 and 5 miles later it died, and when i took it apart it apeares that th piston has expanded enuf to hit the sides but

how do i change me piston and rings on a yz125 2002 If you have never stripped down an engine get expert help .Piston rings are very fragile and can be snapped very easily .They also fit in there ...

87 yz 125t. bored .30'' over need 56.75mm Piston 87 yz 125t. bored .30" over. need 56.75mm piston but wiseco doesn't make them anymore. yea, for most bikes they only come in .020 increments now. if ...

2004 yz 125 std bore size,and what size do the pistons go up in,thanks The std bore is 54mm and some available piston sizes are (Vertex Pistons) 53.93 53.94 53.95 53.96 53.97

1989 yz 125 has a flat piston or dome piston hiyaflat piston hope this helpsJohn

piston goes up but wont go back down but when the head covers off it moves up and down freely piston should be flush with the barrel not going past the barrel. if piston hits the head it wont go back ...

1 want to rebuild my top end its a stock cylinder is a 56mm piston ok to use or do i go with a 54 The manafacturer of the piston you are going to use has a specefic piston to clyinder fit. Use the ...

piston sizes hi, im just wondering how important piston sizes are? the shop could only give me an A size piston but i think my barrel is a C. Yz125 2007.thanks The A stamping is not an oversize, ...

...flywheel where coils are, i have spark, fuel and air, but no fire? Top dead center is just when the piston is all of the way up. Keep in mind it is a two stroke, and there should be a timing to set ...