Honda revealed a couple of concepts based on its 650 models at the 2015 EICMA show. Pictured here is the CB4, a naked roadster, which was joined by the CB Six50 scrambler. No official information was released, as they appear to be a simply design exercises from Honda R&D Europe and unlikely to develop into a production model (but we can hope!).

The CB4 concept is equipped with the 649cc Inline-Four powering both the CB650F and CBR650F with the same gorgeous cascade of four header pipes. Instead of the production models’ single underslung exhaust, the pipes end in a pair of stacked exhaust cans with carbon fiber heat shielding.


The frame, subframe and footpeg mounts also appear to be identical as the one on the CB650F but that’s where the similarities between the two naked models end. The 650F’s bodywork was replaced with a pair of large air scoops and a carbon fiber radiator guard.


The machined triple clamps frame a circular LED headlight, which matches the round instrument panel and bar-end mirrors. The upside-down fork appear to be the same as the one on the CBR600RR, as are the radial-mount Tokico calipers, though they are painted red on the CB4. The red matches the coil on the rear shock which suspends the CB4’s single-sided swingarm.


At the moment, the CB4 remains a styling exercise, but who knows what Honda may do if it draws enough interest.

Follow the rest of our 2015 EICMA Show coverage for more information on new 2016 motorcycle announcements.

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  • TalonMech

    Gorgeous bike, so of course it won’t see production. Even if it did, Honda would send it to the blandify committee to ensure the production version came out as boring as a bowl of oatmeal.

  • Old MOron

    Victory Ignition Concept, Honda just handed you your ass!

  • armyvet00

    That CBSix50 though…. take my money!

  • ‘Mike Smith

    Wow, 1000 times sexier than the CB650F! This is what the CB1000R should have looked like.

    • Allison Sullivan

      Totally agree. The CB1000R is years overdue for a revamp, and this is exactly what it should look like.

  • Ian Parkes

    I’d buy that.The edgy lines follow function – unlike Kawasakis, which have zig-zag lines trowelled on like some raddled old diva with too much slap. Although that’s better than that naked Suzuki which looks like they let one of the designer’s kids loose in the carpark to make a Kawasaki copy but the plasticine sagged in the sun.

  • Born to Ride

    Man, why does Honda torture us with these beautiful bikes that they will never build. This bike looks like it would be incredibly expensive though if a consumer model were to go to market. That level of quality and tolerances don’t come cheap.

    • BoxerFanatic

      Just like Hawk GT was more expensive than CBR600F Hurricane in 1988, when Honda actually DID sell a niche, well-designed, aluminum chassis middleweight sport standard ‘naked bike’.

      Fantastic bike, but didn’t sell. It became a cult-bike anyway.

      • The Hawk GT was actually priced $400 *under* the Hurricane, close enough that people simply opted to chuck out a few hundred extra bucks and get a bike that was more powerful and had all the bells and whistles.

  • JMDonald

    Add a nice little speedster windscreen it becomes near perfect. I miss my old cb600.

  • Kenneth

    ‘Great-looking bike, but don’t we know, by now, that the inline-3 is the best way to go for a street bike? Honda is making use of what they already have, but I think they should get to work on their own 3, or make better use of their flat-6 (or flat-4). Their “Evo-6” concept bike of a few years ago was stunning.

    • BoxerFanatic

      This bike reminds me dearly of the NT650 Hawk GT… and makes me wish this thing had a 650-800cc mid-range parallel twin, if not a V-twin. A triple with a 120-degree crankshaft would be very sweet, too. I would not insist on a V-twin because I realize the packaging is easier, and engine block weight would be slightly lower on a shared cylinder block and head, rather than a V-layout.

      The I4 is the least important part of this bike to me, and I agree with your opinion.

  • Luke

    Best looking Honda motorcycle I’ve seen in a long long time. This is a winner.

  • BoxerFanatic

    As the former owner of an NT650 Honda Hawk GT, I can recognize this bike from a mile away.

    This is the re-incarnation of a single bike melded together from said Hawk GT (aluminum spar frame, ELF single-sided swingarm, tucked-under short-right-exit exhaust) and the CB1 that sat in showrooms next to it, with a moderate-displacement DOHC inline-4 engine, and similar sporty-standard ergos, and no fairing.

    I say ‘sat in showrooms’, because those bikes, nor their sister GB500 retro bike making the triplet, failed to sell under the over-arching shadow of the CBR-600F Hurricane in the late 1980s, and all were cancelled by the first year or so of the 1990s.

    It may also succeed the Honda 599/Hornet, but not as directly as the aluminum chassis components and the emphasis on visual design echo the Hawk GT. Hornet was a budget-stripped steel-framed step back from CBR600F*, but unfortunately forgot the “budget-stripped” bit when it came to MSRP, and ended up costing too much money. Suzuki SV650 took the marketshare from the previous Hawk GT owners, and the 599 by being more affordable and a better bike.

    I still wish this Honda concept had a V-twin, but i’ll be impressed if Honda builds the thing at all. That and the NeoWing concept. They make me want to like Honda again, but they are still vaporware like the NAS1000 Concept was, until they show up on dealer showroom floors.

    • Yanni Kollias

      Your absolutely right about the “budget-stripped” part. Honda also seemed to fail in the segment with the cbr650f. Great looking bike, plenty fast but when you have other competitors like Yamaha and kawasaki who priced their bikes (of same category) a lot less Honda missed out. What I fear the most with many concept bikes/cars is that they show off this beautiful work of art at a motor show but when production comes its nothing but bare bones and makes you want to slap the person responsible. Yamaha on the other hand really did their homework on MT07-FZ07 and the XSR700 and 900. Awesome bikes and cheap too. One thing I can say about Honda is that they definitely leave room for owners to customize and modify the bike on how they see it fit. Honda just needs to improve on their marketing skills a little and I think they may have a winner. Lets hope this CB4 will be a grand slam… soon. It would surely make Yamaha break a sweat!

  • Honda wins my eye again.. so sexy bike

  • Yanni Kollias

    I see some queues from Ducati Diavel and Yamaha Vmax. This bike would really take on the FZ07-MT07 and the Ninja 650. In Europe many consumers are aiming towards the 650-800 displacement simply because they are more affordable, light weight, and easy to maneuver and don’t burn much fuel. Also bikes like this are so much easier to service too.