Motor Bike Engine Outputs

[Aongus Mac Cana]

I am a bit out of touch with the motorbike scene, but in a recent review of a Honda Motorbike in the motoring supplement of a daily newspaper I was surprised to see the claimed output of the approximately 1litre bike engine being quoted as 175 b.h.p.
All through my motoring career 100 b.h.p. per litre was a sort of "holy grail" aspired to but never quite achieved in any naturally aspirated production engine. Can it be true that you can now actually buy a bike "off the peg" delivering 175 b.h.p./litre? or was this a misprint? (another bike listed for comparison seemed to have a similar "stratospheric" power output)
Regards,
Aongus Mac Cana

[Walezy]

It is possible but the engine revs are very high. Actually I would like to have the same output per litre in my Fiat :).
The other thing is that Honda makes engines that give 100-120HP per litre in cars. For example Honda s2000, nice roadster with 2.0 liter engine and 240HP. I will probably buy such engine in near future for my car(already got the proper bellhousing for type 9 gearbox :) )
Guy, you could tell us how is such high HP per litre made in such engines and if this could be used in cars(or why it is not).

[Guy Croft]

I don't take motorbike-related questions here in GC Q&A, I have asked for the thread to be posted elsewhere in the forum.

GC