Interesting comments Skypig
As someone who has both (I'm kinda envious - two damned nice bikes you have there) you're in the perfect position to answer some questions on the differences
On paper the 701 makes 74 bhp and the 450 makes 63 bhp (so ~15% more power for the 701)
The 701 weighs 145kg and the FS450 weighs 105kg (701 is ~28% heavier)
So is this how they feel when ridden?
Does the 701 feel roughly a quarter heavier? If so does this in turn mean its less playful and clumsy when compared to the 450 or can you simply be more aggressive and slide it around? For me a big part of the attraction to a supermoto bike is the ability to slide it around.
And does the 15% power difference between the two feel like more in real world conditions? Is it still quite noticeable despite the extra weight of the 701? Does yours have any mods (exhaust, PCV etc) - I cant remember?
Hi,
First, embarrassingly, I haven’t ridden my FS450 yet. I’ve been lockwiring, fitting sliders, handguards, riding other bikes and working (damn work. Time/money pick one!)
My 701 has pipe/inlet/dyno tune. 79.78 RWHP (on the reputable dyno guys machine, on good 98 RON Aussie Fuel)
My 525 race bike is 54 RWHP on a similar dyno, same Fuel.
I have also fitted Sumo wheels/brakes on my 450 EXC and ridden it on the road.
As I’ve alluded to, I’m not the fastest rider, particularly on the road where I’m interested in maintaining my licence, and “alive” status. (11/10ths around a corner to find a farmer doing a 3 Point turn on his tractor is not my idea of the perfect last seconds of life. Maybe a heart attack having sex?)
You can really notice the extra weight of the 701. And the less weight compared to most other road/sport bikes. There is no downside to less weight, so I wish the 701 weighed the same as the comp bikes, but on the road, the way I ride, it’s not terrible.
Again the massive, and usable grunt of the 701 is better, for me, on the road.
Sum up: The lighter bikes feel more lively and fun especially at lower speeds and at 10/10ths. At higher speeds, with real world constraints the grunty 701 is hard to beat and my choice for the road.
“Horses for courses”, and personal preference.
If you are backing it in on the street, the lighter bike might be the better one.