GS1100G pistons

invalid@example.com (gu3), gu3
Wed, 28 May 2025 18:57:01 +0000
Performance/Tuning/Mods

Hi all,

Needing to rebuild by 83 GS1100G and needing some info on pistons. There is only one company producing pistons specifically for the GS1100G (Dynoman). I've seen online that GS1000 pistons work in the GS1100G, just need to get the right diameter. both the GS1100G specific and the GS1000 pistons are 10.25:1 compression which is greater than the factory 8.8:1. My question is:

1. Will the GS1000 pistons just fit in without having to machine anything (assuming bores are sized correctly)...