Added reply in a thread Piston Size KTM SX 300 10/26/2020 10:53 AM

Meteor pistons offer a 71.93mm piston. Part number is 2668. I no longer sell them, but the quality is good. karlzracing.com

Added reply in a thread RM250 '10 Transmission tear down, assistance needed with parts 10/1/2020 12:38 PM

All the gears shown need replacing as well as any other gears they select in to. Regards the forks hard to say without actually measuring them. karlzracing

Added reply in a thread Help identifying forks... 7/26/2020 1:02 PM

Early 47mm Showa twin chamber cr250.

Added reply in a thread Wrist pin diameter 5/19/2020 1:13 PM

19mm x 49mm

Added reply in a thread WAY too stiff KYB sss forks - Drain oil inner/outer chamber? 5/16/2020 1:33 PM

Even if the bushings still have the Teflon coatings on them, but are rough texture and not silky smoothe the forks will bind. One of many many things I have learned in 30yrs servicing suspension.

Added reply in a thread Kx125 piston help 3/8/2020 7:50 AM

If the cylinder has had a steel liner fitted and been bored out to 54.50mm it will fit.

Added reply in a thread 84-92 yz80 rear shock rebuild questions 11/9/2019 6:52 AM

Yes you can use a needle or on some shocks it has a bolt head that the needle fits in the middle. If it has the bolt assy you can slowly unscrew and it will release the pressure, but having said that you will need the needle to refill anyway. It is also ... more »

Added reply in a thread Yz125 piston and ring 11/8/2019 12:31 PM

You measure the gap when the ring is in the cylinder bore. Push it in the bore with the piston so it sits correct.

Added reply in a thread Piston too low in cylinder? 10/16/2019 3:22 PM

Going off my daily experience of selling mx parts. It looks that a 1997-1998 rod has been fitted which is 5mm shorter.

Added reply in a thread Rust removal works 2 stroke pipe. 7/31/2019 1:18 PM

Ive used Coca-Cola and a scotchbrite on light rust, it may work on deep rust.

Added reply in a thread 1989 RMX250 help 6/25/2019 12:25 PM

Hope this answers the question. K=1989 L=1990 and so on. www.mx-parts.com

Added reply in a thread KTM Non Linkage Rear Suspension 6/6/2019 8:00 AM

The only advantages where easy to remove and install and saving time and money replacing linkage bearings. www.mx-parts.com

Added reply in a thread Cr 125 piston size? 5/26/2019 12:26 PM

The last four numbers are 5450. Std bore is 54mm so you may have a steel liner fitted and been rebored 0.50mm oversize. www.mx-parts.com

Added reply in a thread 2019 ktm 150sx shock question 5/8/2019 3:10 PM

After 7 hours it should be broke in, but not worn out. I have known WP shocks in the past do this. In my experience the piston rod nut comes loose, making the valving shims not clamp to the piston, which causes more oil flow. www.mx-parts.com

Added reply in a thread Rm250 crank 4/1/2019 3:23 PM

The 1988 and 1990 are different, so I would think the 1989 is just for that year only. www.mx-parts.com

Added reply in a thread Fork tool help YZ125 (please) 2/6/2019 6:51 AM

If you are only changing the seals, the only other tool you need is for the fork cap. If you are changing the inner chamber oil you will need the fork cap inner tool, other than that no special tools for the job you are doing. www.mx-parts.com

Added reply in a thread Fork Noise/Air 1/30/2019 6:30 AM

As with any liquid in a vessel the air will rise to the top. So when you turn it upside down the air is now rising to the new top. Regarding you saying loads of air, there has to be air in the system to allow the fork to compress. www.mx-parts.com

Added reply in a thread Help - big end bearing 12/15/2018 5:28 AM

125 and 150 are same rod and big end. www.mx-parts.com

Added reply in a thread Kx250 fork seal replacement 12/2/2018 8:35 AM

You do not need to remove it to do the seals. If you want to remove the cartridge to clean and remove all the oil properly then you need to remove it. Unscrew the cap, separate the cap from the piston rod, remove spring, remove dust seal and clip and ... more »

Added reply in a thread Yzf 2008 fork problems. Need help! 11/11/2018 2:32 PM

If you replace them with the original plastic ones, drill 2 holes 180 degrees apart to prevent pressure build up in the future. I personally would replace with aftermarket aluminium ones. www.mx-parts.com