Hello guys , I'm new to trinity and ended up buying 2 d4 17.5's off of here without knowing much about trinity. The first one I got is an express motorsports 17.5 tornado ht and the second one is just a 17.5 d4 with a 12.5 ht rotor and aluminum timing ring installed,that also came with the purple rotor . I'm leaning to keep the express motorsports one but I guess I'm looking for some words of wisdom. I run blinky short course with an sc10.2 , mip stock pucks system , leaning towards 25/75 gearing 45* timing. I run medium size indoor clay track.
Just lookin for some advice
Thanks
Ben