kx125_1999 with kx1998 piston??

kwikaz · 07-01-2008

Hello all this is my first post, so here goes, im currently performing a top end rebuild on my kx125 1999 model and i went to order a new piston giving the number of the current piston to dealer, only to find out it was a 1998 piston in my motor, im certain my bike is a 1999 model from the vin here are the wiseco piston part # 1998_719ps and this number for 1999_2000_741ps so yer i dont have the exact specs of each piston and dont know where to find them so i can figure out whats the deal?? i am the second owner of this bike so i dont know what the previous owner has done or why there is a 1998 piston in my 1999 model kx125??? any help would be fantastic thanks

KickassKX125 · 07-01-2008

The piston part no. goes 1998_719ps_1999_2000_741ps.

That implys to me that it fits the 1998, 1999 and 2000 models. Did it run before with that piston in?

kwikaz · 07-01-2008

there are two different part numbers there, one for 1998 wich i found in my 1999 motor and one for 1999_2000 models wich is my model kx125 i need to know the difference between the two piston part numbers so i can determine what piston to purchase for my 1999 barrel...

KickassKX125 · 07-01-2008

If you are sure it's a 1999 then you need the 1999 piston. Can you post the VIN no.?

kwikaz · 07-01-2008

ok here they are VIN# jkakxrlc4xa005585 and the motor number is kx125le005786...

gaz · 07-02-2008

I wouldn't sweat on it, my old 2002 kx 125 ran with 1998 pro lite wiseco piston in it. Went well. Check with a shop that does mods for motors. They be up to date on piston changes etc

KickassKX125 · 07-02-2008

Its Definitely a 1999, so you need a 1999 piston.

kwikaz · 07-07-2008

yer thanks gaz i am going to put the same piston back in it went well with it before so why fix somthn that aint broke?? ps thanks kick arse for the advice too...

XR893 · 07-07-2008

Wiseco sometimes do that, 99-01 and 02-04 kx 250's have 2 different part numbers for pistons where other piston companies list one piston for 99 to 04. The difference is a longer front skirt on the 02-04 piston but either piston works in a 99-01 bike.

kwikaz · 07-19-2008

hey where you from xr?? where can i see some pics of your kx??

07-01-2008	#1 (permalink)
kwikaz Newbie Join Date: May 2008 Location: Melbourne,Australia Posts: 19	kx125_1999 with kx1998 piston?? Hello all this is my first post, so here goes, im currently performing a top end rebuild on my kx125 1999 model and i went to order a new piston giving the number of the current piston to dealer, only to find out it was a 1998 piston in my motor, im certain my bike is a 1999 model from the vin here are the wiseco piston part # 1998_719ps and this number for 1999_2000_741ps so yer i dont have the exact specs of each piston and dont know where to find them so i can figure out whats the deal?? i am the second owner of this bike so i dont know what the previous owner has done or why there is a 1998 piston in my 1999 model kx125??? any help would be fantastic thanks Last edited by kwikaz : 07-01-2008 at 08:23 AM.

07-01-2008	#2 (permalink)
KickassKX125 Now after another 125!! BTK Expert Join Date: May 2007 Location: Helmsley, North Yorkshire, England, UK Posts: 889	The piston part no. goes 1998_719ps_1999_2000_741ps. That implys to me that it fits the 1998, 1999 and 2000 models. Did it run before with that piston in? __________________ Jamie 1996 CR250: 2 engines both with the same 1/2 missing! After another 125 to kill the garden!

07-01-2008	#3 (permalink)
kwikaz Newbie Join Date: May 2008 Location: Melbourne,Australia Posts: 19	part # there are two different part numbers there, one for 1998 wich i found in my 1999 motor and one for 1999_2000 models wich is my model kx125 i need to know the difference between the two piston part numbers so i can determine what piston to purchase for my 1999 barrel...

07-01-2008	#4 (permalink)
KickassKX125 Now after another 125!! BTK Expert Join Date: May 2007 Location: Helmsley, North Yorkshire, England, UK Posts: 889	If you are sure it's a 1999 then you need the 1999 piston. Can you post the VIN no.? __________________ Jamie 1996 CR250: 2 engines both with the same 1/2 missing! After another 125 to kill the garden!

07-01-2008	#5 (permalink)
kwikaz Newbie Join Date: May 2008 Location: Melbourne,Australia Posts: 19	pistons sizes ok here they are VIN# jkakxrlc4xa005585 and the motor number is kx125le005786...

07-02-2008	#6 (permalink)
gaz Turtle Wax Taster BTK Intermediate Join Date: Apr 2006 Posts: 184	I wouldn't sweat on it, my old 2002 kx 125 ran with 1998 pro lite wiseco piston in it. Went well. Check with a shop that does mods for motors. They be up to date on piston changes etc

07-02-2008	#7 (permalink)
KickassKX125 Now after another 125!! BTK Expert Join Date: May 2007 Location: Helmsley, North Yorkshire, England, UK Posts: 889	Its Definitely a 1999, so you need a 1999 piston. __________________ Jamie 1996 CR250: 2 engines both with the same 1/2 missing! After another 125 to kill the garden!

07-07-2008	#8 (permalink)
kwikaz Newbie Join Date: May 2008 Location: Melbourne,Australia Posts: 19	1998 yer thanks gaz i am going to put the same piston back in it went well with it before so why fix somthn that aint broke?? ps thanks kick arse for the advice too...

07-07-2008	#9 (permalink)
XR893 Uncle Bob's Love Child BTK Intermediate Join Date: Dec 2005 Location: Melbourne, Australia Posts: 257	Wiseco sometimes do that, 99-01 and 02-04 kx 250's have 2 different part numbers for pistons where other piston companies list one piston for 99 to 04. The difference is a longer front skirt on the 02-04 piston but either piston works in a 99-01 bike.

07-19-2008	#10 (permalink)
kwikaz Newbie Join Date: May 2008 Location: Melbourne,Australia Posts: 19	xr893 hey where you from xr?? where can i see some pics of your kx??

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