S1 Pistons Question

[08herobolt]

Is the bore and stroke on a S1 the same as an XB12? If so, then I would think the 9's pistons would fit, correct?

Thanks for the help ahead of time.

JP

 

[UMDterp13]

I think your answer lies here http://www.buellxb.com/Buell-XB-Forum/Buell-X1-M2-S3/12.01-High-comp-pistons-for-thunderstorm-heads

 

[08herobolt]

Sounds like it will work with some heads. My next question is, what heads should I use? Do XB heads fit?