Battery help for 500 Warrior

[Brahmus]

Four Stroke Tech 500 Warrior motor, the battery I have now is an AGM 200CCA but won't spin the motor well enough to crank up cold. I have to hook the jump box to get her going. Once the bike is warm it will crank but it's not exactly jumping to a start. Does anyone have any suggestions for something that will fit in the stock location and provide the needed juice?

 

[Brahmus]

Does anyone have experience with BikeMaster batteries? they are suggesting 780817 a Li Ion battery that should fit and is 250CCA.

 

[Owen03 Warrior]

You might be able to cut the tray out a little bit in the front tho fit a larger battery

 

[bones]

Get decompression lever from 87-88