Okay, we purchased the big bore kit, S1R Cam, Spark Plug, Tune, Valve Covers, Camshaft cover, and injector from DHM for my wife's 2023 Grom and it did wake up the bike at 5,600 RPM and up. Install wasn't bad because I have rebuild engines before and Youtube is readily available, but there is ZERO instructions, maybe DHM can start adding that in the future. I did a 300 mile breakin and let the wife loose on it, she likes how it will do a regular 55mph now in Northern Arkansas and you can actually pass someone on a 2 lane road if they're going slow. Lower gears are very torquey now, 5,000-5,600 RPM the bike doesn't have any power or pull (weird), 5,700 RPM and up the bike wakes up and runs great! MPG went from 115-90 but that's alright. Other things I did at the time of install was an upgraded oil pump, bigger oil cooler, intake and exhaust. I do recommend but I wish that this kit would be more straight forward; 2 pages of instructions would be perfect. Thank you for reading!
