There are several bike engines that have been used in multiple motorcycles across different models and brands. Here are a few examples:
Honda CBR600RR Engine: Honda's 599cc inline-four engine has been widely used in various Honda motorcycles, including the CBR600RR sportbike, CB600F Hornet, and CB600R.
Kawasaki Ninja 650 Engine: The 649cc parallel-twin engine from Kawasaki has been utilized in different motorcycles like the Ninja 650, Z650, and Vulcan S cruiser.
Yamaha MT-07 Engine: Yamaha's 689cc parallel-twin engine has been featured in multiple models, including the MT-07 (also known as the FZ-07 in some markets), XSR700, and Tenere 700.
Suzuki SV650 Engine: Suzuki's 645cc V-twin engine has been used in several motorcycles, including the SV650, V-Strom 650, and Gladius.
BMW R1200GS Engine: The 1,170cc boxer-twin engine from BMW Motorrad has been utilized in various models, most notably the R1200GS adventure bike, as well as the R1200RT, R1200R, and R1200RS.
Ducati Testastretta Engine: Ducati's Testastretta engine family, available in different displacements, has been used across multiple models, such as the Panigale, Monster, Multistrada, and Diavel.
It's worth noting that while many engine designs are shared among different motorcycle models within a brand, some engines remain exclusive to particular models or have limited use. Manufacturers often develop engines specifically for certain motorcycles, taking into account factors like intended use, performance requirements, and target market. Additionally, engine platforms may undergo modifications and updates over time to suit different models' needs, resulting in variations even within shared engine families.