200X wiseco 10.25:1 Vs 12:1 piston - opinions

[DohcBikes]

Australia is RON from what i can tell.

Ok. In that case, 98 pump gas will be plenty enough to run the 12:1 without concerns.

[Leevvii]

From the Wiseco website :-

HONDA ATC 200
TWO HIGH PERFORMANCE PISTONS HAVE BEEN DESIGNED BY WISECO FOR THIS HONDA APPLICATION:
The 4289 Series has been designed for racing applications and requires the use of racing gasoline of 102 octane or better.
Use of low octane pump gas with the 4289 series will cause denotation and severe piston and engine damage. The 4156
series piston at 10.25:1 compression has been designed for fuel having minimum octane rating of 92 {(R=M) / 2 method}.

Is 98 enough!!

[DohcBikes]

From the Wiseco website :-

Is 98 enough!!

It needs proper jetting and 93 unleaded pump minimum. I ran it all day long in my old engine I sold. Years. Never had an issue. Again. Tuning is key.

Oscar is correct, with proper preparation and tuning this could be possible with that engine. Speaking from experience running 98 octane, it will be even easier to tune.

[yaegerb]

From the Wiseco website :-

Is 98 enough!!

Can't speak for Oscar, but I have built quite a few racing 200x's and I already told you, use lower octane at your own risk.