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Edition:
Kawasaki KH 125 Single Cylinder - [1980]
This edition of the Kawasaki KH 125 Single Cylinder is the 5 speed | Manual version and was first brought out in 1980. This was at around the same time as the introduction of the 1981 Honda CB 1100 R BB and the 1981 Suzuki GSX 1100 SX Katana.This particular Kawasaki KH 125 has a 124cc Air cooled, Four stroke, Wankel Petrol powerplant with 1 cylinders and Carburettor.
An alternative Wankel engine, Standard style motorbike includes the Yamaha XSR 700 Twin - [2020]
The 1980 KH 125 shares its Wankel engine and Standard style configuration with the likes of the 2020 Yamaha XSR 700 Twin and the 2018 Yamaha XSR 700 Twin. Alternatively, if you're looking for other bikes which share the KH 125's Standard style with a similar size of engine then how about the 1967 Suzuki T 125 Two Stroke | 1967cc.1985 Yamaha RZ 125 Naked | 1985cc.
Weighing in at 0 kgs (0 lbs) this makes the Kawasaki KH 125 Single Cylinder in the same weight category as the 2025 Yamaha Tracer 9 GT+ or the 2025 Yamaha Tracer 9 GT, give or take 50kg.
The 1980 Kawasaki KH 125 shares the same bhp with the Yamaha WR 250 F - [2025]
In terms of power the 124cc 7 valve Wankel 1 cylinder engine produces 12 bhp (8 kW) @ 7500 rpm similar to the 2025 Yamaha WR 250 F [36.1 bhp (26 kW) @ 12000 rpm] or the 2025 Honda MSX 125 Grom [9.6 bhp (7 kW) @ 7250 rpm].
The Piston Port Four stroke unit throws out torque of 8.1 lb-ft (10.9 Nm) @ 6000 rpm placing it alongside motorbikes of similar performance figures such as the 2025 Honda MSX 125 Grom [7.6 lb-ft (10.4 Nm) @ 5500 rpm] and the 2025 Yamaha WR 250 F [17.8 lb-ft (24.2 Nm) @ 8100 rpm].
If one combines the weight with power or torque performance for the Kawasaki KH 125 you can get a better idea of it's real world performance.
The 1995 Honda CB 250 Two Fifty has similar Bhp Per Ton stats as the 1980 Kawasaki KH 125 Single Cylinder.
The 1980 Kawasaki KH 125 Single Cylinder has a Power to weight ratio of 104.3 bhp per ton and 70.5 lb-ft per ton. Bhp Per Ton figures of the 1980 KH 125 competing with the 1995 Honda CB 250 Two Fifty [129.0 bhp\ton] and the 1991 Honda CB 250 Two Fifty [129.0 bhp\ton].
If you agree with the late great Carroll Shelby, then arguably an even better indicator of potential performance is Torque. Factor weight into the equation and you end up with - Torque per ton, with the Kawasaki KH 125 generating around 70.5 lb-ft per ton. If you're curious as to what other motorbikes have as much torque to weight then look no further than the 1982 Suzuki GSX 250 L [95.5 lb-ft per ton] and the 2016 Honda CB 250 F Twister [95.5 lb-ft per ton].
With a 0-60mph time of 35.4 secs or a 0-100km/h (0-62mph) of 36.2 secs, this makes the Kawasaki KH 125 Single Cylinder similar in acceleration to the 2015 Yamaha YZF-R15 V2 (35.4 secs) and the 2013 Yamaha YZF-R15 V2 (35.4 secs). This Kawasaki KH 125 Single Cylinder also competes in terms of 0-60 mph and 0-100km/h with the 2018 Honda CB 250 R Neo Sports Cafe (0.0 secs) and the 2020 Norton Superlight SS (0.4 secs).
Quarter Mile time is a close race between the 1980 Kawasaki KH 125 Single Cylinder and the 1992 Honda XR 650 L
When talking about the performance of the 1980 Kawasaki KH 125 Single Cylinder on the drag strip it can reach a quarter mile in an estimated 0 secs @ 0 mph. Bikes with a similar performance down the quarter mile can be found in the 1992 Honda XR 650 L (0 secs) and the 2007 Honda CB 1300 Super Four (0 secs).
The 1980 version of the Kawasaki KH 125 Single Cylinder has a maximum speed of 77mph.
Top Speed of the 1980 KH 125 equals the 2021 Honda XR 650 L
If maxing out your bike on the AutoBahn is your thing and you're wondering what's faster at the top end than the 1980 Kawasaki KH 125 Single Cylinder then how about a 2021 Honda XR 650 L (88 mph) and the 2019 Honda XR 650 L (88 mph).
Buell-EBR S2 Thunderbolt
Engine Capacity: 1203 cc
Top Speed: 145 mph
Quarter Mile: 12.8 secs @ 120 mph
