Manley
Manley, Race Master valve kit Stock .550" valve lift
Manley, Race Master valve kit Stock .550" valve lift
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Steel top collars. Standard size replacement; installs without machining. Kit includes Race Master valves; performance double spring assemblies; steel or titanium top collars and a complete set of Manley''s fully machined chromoly valve keys. Race Master valves are manufactured of stainless XH-426 for exhaust and stainless NK-842 for intake and offer great ultimate tensile strength; combining superior quality at a competative price. Okay for stock or racing upto 8000 RPM.
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Why buy from Forty5°
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Verified compatibility
Every part we ship is checked against your bike's platform, year, and engine. If it doesn't fit, we tell you before you check out.
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Workshop installation
Book a serviceHave us fit it. Book installation at parts intake — same-day on most jobs, master techs only.
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Founder-led aftersales
Get in touchQuestions after fitment? You'll speak to the people who installed it. We answer email and WhatsApp seven days a week.