Richard Navarro: What year Grom? I'm still sporting my stock ones on my '15 OG, sadly. I have put a lot more $$$$ into my motor/drivetrain than I'd care to admit. I'm just interested so I can make an informed choice when I get around to buying a set. Wish I could be of more help.
I ran an fxcnc rear set on my 2014 cbr125r. Obviously you get what you pay for, but I was actually surprised at how well they held up.
Fit and finish wasn't great, no instructions either. I remember using an array of washers to get the levers lined up to my liking and to remove any lateral play. Also use blue loctite and carry tools with you for when you need to "retorque" things.
Otherwise they worked OK for the price. Even took a couple of crashes without breaking anything! Only reason I bought them though was because it costed less than replacing my broken factory rearset. After I found another OEM rearset I shelved the fxcnc set and never looked at them again...