I got a full dual Akra 4-1-2 on my bike and can fully reccomend it. The single one gives you a bit more power than the dual one but I like the symmetrical look of it. Had my ECU re-flashed by Peter (fasterfaster) and my baby is very happy. You will also save about 10 kg over the OEM which is really a worst of the bike systems (or maybe the brakes come first
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