KN Planning Champ 80 Jog 80 JOG80 CHAMP80 Champ RS RS90 Target 27V JOG 3CP 2JA Jog 2JA Series Sports Muffler Chamber [Machining Required]YAMAHA Vertical Engine 50 Series Sports Chamber 1 Muffler Body Gasket YAMAHA Vertical Engine Jog General 27V to 3CP 50 Series Jog 80, Champ (54V to RS) Champ 80 Voxun Excel *The following vehicle models cannot be installed 3AA Biwiz Champ CX Gear Caution. When installing, it may interfere with the oil pump cover and other parts, so installation involves machining. Bolt attachment part: Elongated hole machining, fitting adjustment, etc. The machining