The Antigravity Baterries AG801 8-Cell Motorsports batteries is one of the most popular models. It is an extremely powerful battery in a small package. At a very small 4.25" Length x 2.25" Depth and 3.75" hieght (to the top of the terminals) this battery offers extreme power in the most compact size in Lithium Motorsport batteries. This battery is best used for applications where extreme weight loss and ultra compact size are desired and can be used for bike from 600cc street use and 1200cc race use. ADHESIVE BACKED FOAM INCLUDED IN BOX FOR EASY INSTALLATION.