- Vertical oil ways precision drilled for better oiling
- Drilled for locating screw
- Can be used for intake or exhaust
- Made from a nickel aluminum bronze alloy for longevity of tappet block and tappet block bore under extreme conditions
- Designed to accept more lift
- Includes O-ring channels for proper sealing and seating
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1971 | Triumph | Bonneville 650 (US) | |
| 1972 | Triumph | Bonneville 650 4 Speed T120R | |
| 1973 | Triumph | Bonneville 650 5 Speed T120RV | |
| 1966 | Triumph | Bonneville 650 Police | |
| 1963 | Triumph | Bonneville 650 T120 | |
| 1965-1970 | Triumph | Bonneville 650 T120 | |
| 1964 | Triumph | Bonneville 650 T120R | |
| 1970-1971 | Triumph | Bonneville 650 T120R | |
| 1979 | Triumph | Bonneville 750 America | |
| 1981 | Triumph | Bonneville 750 Final Edition | |
| 1979 | Triumph | Bonneville 750 Special T140D | |
| 1981 | Triumph | Bonneville 750 Special T140D | |
| 1977 | Triumph | Bonneville 750 Super Jubilee | |
| 1979 | Triumph | Bonneville 750 T140E | |
| 1973 | Triumph | Bonneville 750 T140RV | |