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my bike is 2015 cup bike I got it new in 2015, it has about 15 sprint races on it and a probably about 10 track days, i check valves religiously and oil changes are done after every outing, the one thing i have never bother to check is the cam sprocket bolts, well the intake bolt decided to back...

really digging the new color

So i finally got a chance to install the Tyga exhaust on my RC390 cup, everything bolted up nice and easy and it looks and sounds great, huge thanks to Matt from FORMULA 390 for the great customer service. The bike was making close to 43hp last time it was dyno, the head was milled .004 inch...

I just got the email, they are done with my bike and the bodywork is done.

Well the experiment has begun, i have been racing my ZX10 for the past 3 years, with a decent degree of success. during my amateur year I won the over all amateur, and the am super sport open championship. When i decided to buy an RC390 i really had no idea what i was getting into, I have...

picking her up tomorrow, GPR did a nice job.

Hello everyone, I'm hosting a track day on September 4th 2015 at streets of willow, if anyone in the forum would like to attend please let me know, and i can hook you up with a discount code. It would be nice to have some fellow RC390 riders to play with. you can contact me here or at...

New and proud owner, I'm loving this thing. I will be racing it in the upcoming CVMA winter series. I currently race a ZX10 so it will be a shock to the system, but I'm looking forward to tires lasting longer than one round.