Triumph Twins Black Diamond 1.44" Exhaust - Intake Valve

In stock

SKU MAP9166
SKU MAP9166
Manufacture MAP Cycle

Universal Fit - review specifications carefully

Product description

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.

NOTE: These exhaust valves are extremely close to the same profile as the standard, factory, original equipment intake valve for many models and only require a .060" spring cup shim to be used as an intake valve. This shim (part #vs060) is available though MAP.

FITS:

  • Fits 1949-62, 6T Thunderbird (intake and exhaust)
  • 1954-57 T110 Tiger and TR6 Trophy (exhaust);
  • 1959-63 T120 Bonneville (exhaust)
  • 1964-83 650cc and 750cc twins from engine #DU5825 (exhaust).

Oversized Valves Are Available From MAP Cycles, Inc.

  • 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

Fitment information

Triumph Models

  • Triumph Bonneville 650 4 Speed T120R 1972
  • Triumph Bonneville 650 5 Speed T120RV 1972 - 1974
  • Triumph Bonneville 650 Police 1966
  • Triumph Bonneville 650 T120 1959 - 1970
  • Triumph Bonneville 650 T120R 1961 - 1973
  • Triumph Bonneville 650 T120RV 1974 - 1975
  • Triumph Bonneville 750 5 Speed T140RV 1974
  • Triumph Bonneville 750 5 Speed T140V 1973
  • Triumph Bonneville 750 5 Speed TR140V 1978
  • Triumph Bonneville 750 America 1979
  • Triumph Bonneville 750 ES T140ES 1982
  • Triumph Bonneville 750 Electro T140ES 1980 - 1981
  • Triumph Bonneville 750 Executive T140 1980 - 1982
  • Triumph Bonneville 750 Executive T140ES 1983
  • Triumph Bonneville 750 Final Edition 1981
  • Triumph Bonneville 750 Harris 1983
  • Triumph Bonneville 750 Royal T140LE 1981 - 1982
  • Triumph Bonneville 750 Silver Jubilee T140J 1977
  • Triumph Bonneville 750 Special T140D 1979 - 1981
  • Triumph Bonneville 750 Super Jubilee 1977
  • Triumph Bonneville 750 T120RT 1970
  • Triumph Bonneville 750 T140E 1978 - 1982
  • Triumph Bonneville 750 T140RV 1973 - 1975
  • Triumph Bonneville 750 T140V 1976 - 1977
  • Triumph Bonneville TSX 750 T140TSX 1982 - 1983
  • Triumph Thunderbird 650 6T 1950 - 1966
  • Triumph Thunderbird 650 TR65T 1982
  • Triumph Tiger 650 T110 1954 - 1957
  • Triumph Tiger 750 5 Speed TR7RV 1973 - 1975
  • Triumph Tiger 750 TR7V 1974 - 1981
  • Triumph Tiger Trail 750 TR7T 1981 - 1982
  • Triumph Trophy 650 4 Speed TR6C 1972
  • Triumph Trophy 650 5 Speed TR6CV 1972 - 1973
  • Triumph Trophy 650 5 Speed TR6RV 1972 - 1973
  • Triumph Trophy 650 TR6 1956 - 1970
  • Triumph Trophy 650 TR6C 1966 - 1973
  • Triumph Trophy 650 TR6R 1966 - 1973
  • Triumph Trophy 650 TR6SC 1964 - 1966
  • Triumph Trophy 650 TR6SR 1964 - 1966
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