English-made, factory original equipment stock-sized (standard) Triumph and BSA exhaust valve.
- New old stock, factory original valve
- Standard stock size
- 1968-73 Trident T150, BSA Rocket 3 (long stem valve adjuster models).
Note: Trident's with ball-style valve adjusters need to use short stem valves.
Oversized Valves are Available from MAP
- 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
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