Busa battery on 400ex, direct fit?

[400eXr1d3rZ]

I just went to go start my quad, only to find out my battery is almost out of juice. Is a hayabusa battery the same size as the stock 400 battery? I heard it was alot better than stock and was similiar size but im not sure.

[bradley300]

i always heard people using the gsxr 600 battery, not sure if its the same as a 'busa or not

[Wheelie]

This subject is being discussed right now in the 400ex section.

A busa battery is a direct fit, although about 1lb. heavier. Part # is a yt12ab-s.

[MO-EX-RIDER]

Originally posted by bradley300
i always heard people using the gsxr 600 battery, not sure if its the same as a 'busa or not

gsxr 600 battery is a direct fit too