YTX20L Battery Ski-Doo 550 GSX, GTX, MX Z 2007-2012 Motocross by Yuasa MOSM720BS YTX20L is a 12V 18AH 270 Cold Cranking Amps (CCA) Sealed Lead Acid (SLA) Battery Dimensions: 6.87 inches x 3.43 inches x 6.12 inches. Polarity: Positive on right, Negative on left. 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.