Piston Seizure

[MikeKX250]

While riding a long road section at 40-50mph during a Turkey Run this weekend the piston seized on the intake side in my 99 KX-250. I know have aluminum fused to the plating on my cylider. What is the best/easiest way to clean the aluminum off without damaging the Nikasil plating? Also what could have caused this? My jetting was rich enough, oil and gas was mixed at 40:1 and I had not been through any deep water.

 

[va_yzrider]

When riding on pavement or hard surfaces for extended periods of time, you need to pull in the clutch when you decelerate. Did this happen on deceleration?

 

[Studboy]

I have always used muriatic acid. Wear very thick gloves and be very careful.