• Precise four channel vacuum indicator for intake synchronization
• New mercury free design
• For use with 2, 3 and 4 cylinder 4 stroke engine
• Spill-proof design, can be stored horizontally or vertically
• Includes manometer fluid, 5mm adapters, in-line restrictor and instructions
• 5mm adapters fit most Honda and Suzuki models
• 6mm adapters available separately for most Yamaha models
• No adapters needed for most Kawasaki models

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