- Description
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Details
Race-proven durability!
Our MAP valves feature black oxide nitrating (a superior hardening process) which penetrates into the ultra-EV8 stainless steel core material, forming a super-hard outer layer. This "Black Diamond" finish adds surface hardness as well as a smoother exterior coating which greatly reduces friction. This reduction in friction allows for tighter tolerances (fit) and provides long-lasting durability.
- These valves are vastly superior to factory valves and other so-called "performance" finishes such as hard chrome.
- Our induction welded, heat-treated tip prevents mushrooming and eliminates the need for lash caps.
Oversized Valves
- Our oversized valves (OS) are flow tested for maximum performance.
- Oversized valves can also be used to rejuvenate sunken valve seats while correcting valve geometry.
- The OS valve features relocated keeper locations to accommodate hi-lift racing cams and springs. This saves additional machining expense.
NOTE: Always be sure to check piston clearance before installing oversize valves.
FITS:
- 1966-72 A65 and A70 BSA models.
Additional Information
SKU MAP9189 Manufacture MAP Cycle - Additional Information
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Additional Information
SKU MAP9189 Manufacture MAP Cycle - Reviews
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- Fitment Information
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BSA Models
- BSA A65 Firebird 1969
- BSA A65 Firebird Scrambler 1968 - 1971
- BSA A65 Hornet 1966 - 1968
- BSA A65 Lightning 1966 - 1972
- BSA A65 Spitfire 1966 - 1968
- BSA A65 Thunderbolt 1966 - 1972
- BSA A70 Lightning 1971 - 1972
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Product Questions
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