Motorcycles
Examples of motorcycles with multivalve-engines include:
- 1914 Peugeot Grand Prix racer, 500 cc DOHC 8-valve parallel twin (top speed over 122 km/h).
- 1915 Indian board track racer, 61-cid (1.0-liter) OHV 8-valve V-twin.
- 1921 Triumph Ricardo 499 cc OHV 4-valve single-cylinder machine, copied by Rudge-Whitworth with their 1924 Rudge Four 350 cc OHV 4-valve single-cylinder machine, and 1929 Rudge Ulster 500 cc OHV 4-valve single-cylinder machine.
- 1972 Honda XL250 "pent-roof" SOHC 4-valve single-cylinder machine (the first mass-produced 4-valve motorcycle).
- 1977 Honda CB400 SOHC 6-valve parallel-twin.
- 1978 Honda CX500, a 498 cc OHV 8-valve V-twin, and 1978 Honda CBX1000, a 1,047 cc DOHC 24-valve straight-6 (105 bhp (78 kW; 106 PS)).
- 1979 -1992: Honda NR series, racing & production motorcycles with 8-valve-per-cylinder "oval-piston" V4 engines (actually 32-valve V8s with adjoining cylinders merged).
- 1985 Yamaha FZ750 motorcycle with DOHC 20-valve straight-4 Yamaha "Genesis" engine.
- 1998–2006 Yamaha YZF-R1 superbike with redesigned (more compact) "Genesis" engine. 2006 model delivered 180 bhp (134 kW; 182 PS) at 12,500 rpm (130.3 kW/liter).
The Yamaha XT660 single once had five valves per cylinder, but a subsequent redesign reduced the valve-count to four. The Aprilia Pegaso 650 single also started out with five valves, but current models only have four. The jointly developed BMW F650 single always had four valves.
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