June 8, 20206 yr What insert would be stock in an '18 rr? I was perusing the web and came across the s3 inserts in high and low compression. They offer "standard" as well...
June 8, 20206 yr Think the inserts are colour coded.You can see the insert where the spark plug screws in.Your importer would know what is standard
June 12, 20206 yr Well as long as you are NOT talking about the 18 Gold models (because they shipped with completely different heads on them with Higher compression than the other models), then I can tell you that red anodized insert is HIGHER compression silver is MEDIUM (STOCK) and GOLD is LOWER compression. You can get them from TRS dealer, they are not that expensive.
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