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Edition:
Honda CB 750 Four K2 - [1972]
This edition of the Honda CB 750 Four K2 is the 5 speed | Manual version and was first brought out in 1972. This was at around the same time as the introduction of the 1973 Kawasaki H2 750 Mach IV and the 1972 Kawasaki H2 750 Mach IV.This particular Honda CB 750 has a 736cc Air cooled, Two stroke, Wankel Petrol powerplant with 4 cylinders and Carburettor.
An alternative Wankel engine, Standard style motorbike includes the Yamaha XSR 700 Twin - [2020]
The 1972 CB 750 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 CB 750's Standard style with a similar size of engine then how about the 2020 Yamaha XSR 700 Twin | 2020cc.2018 Yamaha XSR 700 Twin | 2018cc.
Weighing in at 226 kgs (498 lbs) this makes the Honda CB 750 Four K2 in the same weight category as the 2025 Yamaha MT-09 Y-AMT or the 2025 Yamaha Tracer 9 Triple, give or take 50kg.
The 1972 Honda CB 750 shares the same bhp with the Suzuki SV 650 ABS - [2025]
In terms of power the 736cc 8 valve Wankel 4 cylinder engine produces 67 bhp (49 kW) @ 8000 rpm similar to the 2025 Suzuki SV 650 ABS [73 bhp (54 kW) @ 8500 rpm] or the 2025 Honda X-ADV 745 [57.8 bhp (43 kW) @ 6750 rpm].
The SOHC Two stroke unit throws out torque of 44.2 lb-ft (59.9 Nm) @ 7000 rpm placing it alongside motorbikes of similar performance figures such as the 2025 Yamaha YZF-R9 Triple [68.5 lb-ft (93.0 Nm) @ 7000 rpm] and the 2025 Yamaha Tracer 9 GT+ [68.5 lb-ft (93.0 Nm) @ 7000 rpm].
If one combines the weight with power or torque performance for the Honda CB 750 you can get a better idea of it's real world performance.
The 1984 Yamaha FZ 400 N has similar Bhp Per Ton stats as the 1972 Honda CB 750 Four K2.
The 1972 Honda CB 750 Four K2 has a Power to weight ratio of 296.4 bhp per ton and 195.8 lb-ft per ton. Bhp Per Ton figures of the 1972 CB 750 competing with the 1984 Yamaha FZ 400 N [320.6 bhp\ton] and the 1989 Suzuki GSF 400 DOHC [320.6 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 Honda CB 750 generating around 195.8 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 2018 Honda NC 750 X DCT [220.8 lb-ft per ton] and the 1994 Yamaha XJ 900 S Diversion [220.8 lb-ft per ton].
With a 0-60mph time of 12.5 secs or a 0-100km/h (0-62mph) of 12.7 secs, this makes the Honda CB 750 Four K2 similar in acceleration to the 2021 Kawasaki Ninja 400 ABS (12.5 secs) and the 2019 Kawasaki Ninja 400 ABS (12.5 secs). This Honda CB 750 Four K2 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 1972 Honda CB 750 Four K2 and the 1982 Honda XL 250 R
When talking about the performance of the 1972 Honda CB 750 Four K2 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 1982 Honda XL 250 R (0 secs) and the 2019 Honda CB 1000 R (0 secs).
The 1972 version of the Honda CB 750 Four K2 has a maximum speed of 123mph.
Top Speed of the 1972 CB 750 equals the 2014 Yamaha FZ8 Fazer
If maxing out your bike on the AutoBahn is your thing and you're wondering what's faster at the top end than the 1972 Honda CB 750 Four K2 then how about a 2014 Yamaha FZ8 Fazer (134 mph) and the 2013 Yamaha FZ8 Fazer (134 mph).
