rolling

  1. Formula390

    415 Sprockets

    415 Front Sprockets are rolling off the machining center constantly now. Stock for the rear sprockets should be here later this week and will have an array of offerings for rear sprocket sizes. Sprocket fitment is perfect! These front sprockets are made from hardened Chromoly 4140, and have cold...
    • Formula390
    • Thread
    • $80 center chromoly compare constantly contact delivery directly existing front gear inventory machining options price queue ratio rear rolling sprocket sprockets stock threads week worksheet
    • Replies: 9
    • Forum: Formula390
  2. B

    Jumping Rear Wheel

    Hi Guys, Is this normal? The rear wheel apparently jumps from time to time...and it looks and sounds annoying. I can also feel the non-smoothness of the ride when I am rolling on the road on the first gear without reving. It feels like the bike is jerking...
  3. D

    Power surge/chop when rolling onto throttle

    Hi All, I haven't been on here in a year-- trying to get out and actually ride the thing! I have one major complaint that I'm trying to track down the best solution to. When going from closed throttle and rolling on, there is a very sensitive turnover point where the engine goes from braking to...
Top