taco eater :
Arsenio Braga from Northborough, MA United States
I'll admit I definitely bit off more than I could chew with this set-up. And with the scarce information out there for them, it's hard to find articles or even other people that can help you out when you're stuck. Takes a lot of finagling, but it's totally worth the effort. OH YEAH, DONT SET THE TIMING ACCORDING TO THE DIRECTIONS PROVIDED, find the motomatic blog post about HPI timing and you'll be good to go.
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3 taco eaters like this review
Pure racing rippage...
November 3, 2015
taco eater :
samsporter from Idaho Springs, CO United States
This is the race bike sopapia! Extreme throttle response with the internal rotor. The smaller lighter rotor means less weight and momentum on the crank so your motor revs up quicker (like super fast quick), like a race motor should. Beware that this IS a race bike only setup. The light coil is the weak link. It's not strong enough for a daily rider that powers headlights, speedo light, tail and brake lights and a horn. It's good for only a brake light to keep you from getting slammed from the rear at the hairpin on the track. You trade your lights for extreme rippage on this one!
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4 taco eaters like this review
HPI = goodness
November 3, 2015
taco eater :
Mijunkin from St. Louis, MO United States
Only CDI that is worth the monies. The curve is teh magic.
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a must have
November 3, 2015
taco eater :
Anonymous Person from fullerton, CA United States
uhh.....pretty much the first thing you wanna buy if your gonna build anything right. this is the difference between thinking your fast to hauling ass. quick hard reving race shit and keeps yours temp way down. want one on every bike
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1 taco eaters like this review
saweet
February 25, 2012
taco eater :
max ramos from Ames, IA United States
get yourself some new bolts, and it's a perfect fit on a Tomos A3.
Amazing if you know what you're doing 
Pure racing rippage...