Most powerful single cylinder motorcycles

Motorcycle engine, in its most basic form, consists of only one cylinder and piston. Single cylinder engines are more compact and lightweight than twins, triples or quads.

All mopeds, small displacement motorcycles and purposeful off-road bikes, have single cylinder engines. The differences lay in the type of internal combustion cycle (2-stroke or 4-stroke) and other basic characteristics common for all engines, regardless of cylinder count.

Single cylinder engines are most limited in maximum RPM they can achieve, as they require larger bore or stroke to generate sufficient power with only one piston. This reduces maximum power, but keeps high low RPM torque.

For basic commuter bikes, mopeds or off-road bikes, this lost power is offset by greatly reduced weight, engine dimensions, as well as complexity and expense of having more moving parts.

#	make & model	Power (hp)▼
1.	1975 Harley-Davidson HDB2 Bimota	86
2.	1952 Gilera 500 Saturno Piuma	84
3.	1982 Ron Wood Racing Street Tracker Rotax	80
4.	2024 Ducati Hypermotard 698 Mono	78
5.	1993 Ducati Supermono	75
6.	1972 Gurney Alligator	70
7.	1946 Norton Manx	52
8.	1948 Fiat Moto Major	50
9.	1970 Zanella Patagonian Eagle	50
10.	1992 Aprilia Pegaso 650	50
11.	2013 Yamaha XT 660R	49
12.	2005 Aprilia Pegaso 660	49
13.	2006 HDT M1030M1	48
14.	2006 Yamaha MT-03	48
15.	1991 Yamaha XTZ660	48
16.	1995 Yamaha SZR660	48
17.	1990 Suzuki DR650 RS	46
18.	1985 Yamaha SRX	45
19.	1990 Aprilia Pegaso 600	44
20.	1989 Suzuki RMX 250	44
21.	1990 Yamaha XT 600E	44
22.	1985 Honda XBR500	44
23.	1988 Honda NX 650 Dominator	44
24.	2013 KTM 390 Duke	43
25.	1983 Honda XL 600R	42
26.	1989 Honda GB500	42
27.	1965 Velocette Thruxton	41
28.	1936 AJS 7R	40
29.	2000 Honda NSR150 SP	40
30.	1992 Aprilia AF1 125 Futura SP	39
31.	2017 TVS Apache RR 310	38
32.	1982 Honda Ascot FT500	35
33.	1949 Vincent Grey Flash	35
34.	1986 Yamaha SDR200 Whippet	34
35.	2000 Buell Blast	34
36.	1980 Yamaha DT200	33
37.	1980 Honda CB250RS	33
38.	1984 Aprilia ETX 350	33
39.	2000 Suzuki DR-Z400	32
40.	1978 Yamaha SR500	32