Do you think this is really a 40 HP bike?

They told me for sure that the bike has 40HP !!!!

http://www.ec21.com/offer_detail/Sel...--7854767.html

Any comments ?

Who knows?. On that link there's a another link to what they pretend is the manufacturer. If you select that same bike there it's lost 2kw and 2 Nm of torque, and has gone on a diet losing 10 kg just like that.

I say pretend manufacturer because they also show the 600cc Jialing JH600 as being their product...

If the specs are correct, i.e. ceramic bore, 450 cc, 10:1 compression, OHC with 4 valves, etc there's no reason why it shouldn't reach that power output. It's not unreasonable, specially as it's a non-road legal model, meaning no catalyser and other power-sapping legalities.

a claim of 43 HP sounds reasonable when you consider the bike looks to be a copy of a yamaha yz 450 . the yamaha claims 59 HP at the crankshaft