12V 8AH Battery Replacement for Yuasa Battery - YTX9-BS YUAM329BS Motocross by Yuasa M729BS YTX9 is a 12V 8AH 135 Cold Cranking Amps (CCA) Sealed Lead Acid (SLA) Battery Dimensions: 6.00 inches x 3.44 inches x 4.19 inches. Polarity: Positive on left, Negative on right. Factory activated battery. Maintenance free. No acid pack needed. Advanced design works right out of the box. Rechargeable battery that can be mounted in any position, resists shocks and vibration. Proudly Made In The U.S.A, Motocross is Yuasas specialty resellers house brand. Made in the same factory, to the same specs as the OEM battery it replaces.