Honda has managed to update the previous-generation superbike engine to comply with modern emissions regulations, specifically the Euro5+ regime, by incorporating advancements made with the 2017 ‘SC77’ model of the Fireblade sportbike. This bike is available in the CB1000 Hornet (Europe only right now).
The Euro5+ regulations focus on ensuring engines maintain their emissions performance over a longer period of time rather than reducing absolute limits further.
The New Honda CB1000 Hornet and the SC77 Engine are a Match
The SC77 1000cc engine, known for its conservative design even at the time of its release, has been modified for use in the new CB1000 Hornet.
Changes such as smaller throttle bodies, reduced valve lift, revised timing, and a lower compression ratio have been made to increase midrange torque and overall usability of the engine.
These modifications have resulted in the Hornet having peak power at 11,000rpm and max torque at 9000rpm, lower than the Fireblade but still competitive.
The reusing of the older engine design for the Hornet not only ensures compliance with emissions regulations but also helps cut R&D and tooling costs, contributing to a more affordable price tag for customers.
Despite having slightly lower power and torque figures compared to the Fireblade, the Honda CB1000 Hornet remains a top performer in its class, offering a balance of performance and cost-effectiveness.
Source: Motorcycle News
