I had to replace the battery that came with the compufire alternator. Many sales people stated their preference to other manufacturers with most of them leaning toward the Yuasa. I bought this one not only because of the Compufire name and reputation, but because it is also manufactured by Yuasa. The price was the same as the other brands and four years of trouble free, maintenance free service with the old one made the decision easier. Great quality, great serice life, reasonable price.

I INSTALLED HIGH OUTPUT ALTERNATOR AND GEL BATTERY. IT WAS A TIGHT FIT FOR THE ALTERNATOR IT JUST FITS IN. THE CHARGING IS VERY GOOD AT LOW RPM'S.I THING THE ENGINE EVEN RUNS BETTER WITH FULL CHARGED BATTERY ALL THE TIME. I PUT IN THE COMPU-FIRE GEL BATTERY AND I THOUGHT MY STARTER WAS GOING TO JUMP RIGHT OUT OF THE BIKE.IT WORKS GREAT. THANKS RICHARD