Check the listing for details. Yamaha Wolverine RMAX2 RMAX4 X2 X4 850 Audio Kit B4J-H81C0-S0-00. Condition: New. Listed at 299.99 USD. The Yamaha 2021-2025 Wolverine RMAX2 RMAX4 X2 X4 850 Audio Kit B4J-H81C0-S0-00 is a high-quality audio kit designed specifically for Yamaha vehicles. With the manufacturer part number B4J-H81C0-S0-00, this kit ensures a perfect fit and compatibility with the specified Yamaha models. Upgrade your vehicle with this audio kit from Yamaha to enjoy superior sound quality and enhance your overall driving experience.The Yamaha 2021-2025 Wolverine RMAX2 RMAX4 X2 X4 850 Audio Kit B4J-H81C0-S0-00 is a high-quality audio kit designed specifically for Yamaha vehicles. With the manufacturer part number B4J-H81C0-S0-00, this kit ensures a perfect fit and compatibility with the specified Yamaha models. Upgrade your vehicle with this audio kit from Yamaha to enjoy superior sound quality and enhance your overall driving experience.