PSYCHIC INTAKE VALVE SPRING (XU-09540IS) YAMAHA YZF-R6 Muffler gains 2-3hp while letting
PSYCHIC INTAKE VALVE SPRING (XU-09540IS) YAMAHA YZF-R6 Muffler gains 2-3hp while lettingPSYCHIC INTAKE VALVE SPRING Manufactured from a high strength oil tempered steel alloy Heat treated to increase the durability Machined to precise specifications Designed to be used with stainless steel conversions (where applicable)
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11