The Bazzaz Z-Fi TC offers up traction control technology derived from the highest levels of professional racing to all levels of riders or racers desiring the ultimate in technology, pure fun and advantage over the competition. The Z-Fi TC does not require any additional sensors to be mounted to the bike or mini sprint. Because the Z-Fi TC provides such an advantage in performance it is not legal in some racing series but is legal for most competition.
$949 and it works very well on a mini sprint