I ordered a YS 1.10 and need an in cowl muffler. I see that slimline makes one for the .91 and the 1.20. Would one of these work for the 1.10? Will it still be centerd on the centerline of the engine?

Thanks,
Ryan

Oh yeah.... Also, what is the largest diameter/ lowest pitch prop you suggest for the 1.10?

Thanks agian,
Ryan

Use the muffler intended for the 91.

A 16x6 prop is recommended.