Still on the lift, having just fitted a BST CF rear wheel.
Stock rear wheel with tire , disk, sprocket, etc. came in at 37 Lbs.
It was the heaviest rear wheel I have found on a modern performance bike.
Some of my liter bike rear wheels come in at 32 Lbs.
The BST assembly was 26.5 Lbs.
Will be doing the front wheel swap and heavier fork springs, next.
My front end sags 57 mm with the stock progressive 60 - 90 springs.
Will be going to a linear 85 +/- spring.
i agree battery change and decat removal/titanium silencer are the cheapest lightening route to take
wheels and tyres vary significantly in weight the 390 comes with cast or forged wheels market dependant.
the cheapest wheels are cast from molten aluminium, however forged wheels which is a more expensive process produces a stronger finish and hence can be made thinner, hence lighter.
this is before you consider magnesium or carbon fibre
these days carbon is the way forward with lots of options
if you go full out which you seem to be i think you will get down to 380ish
Heard something hit the table.
Found an exotic looking screw, wondering what part of the bike it came from.
Turned out it was the pivot screw for my breaker bar.
Love to know if lighter wheels feel any different to ride? Imagine just better but any downside?
Also do you know how much weight lost by going to decat and also to exhaust?
Känner Racing in Germany is working on a GP2 track bike.
Pretty much custom built everything but with a KTM Duke 790 engine in it.
They state it will be 308-319 lbs ready to ride except no fuel.
Being a track only toy it has no cat, lights, indicators, side stand, plate holder and has a racing wiring harness.
But a 310 lbs bike with that engine sounds like fun.
Not being too critical, I hope, but isn't calling a machine that's been in public hands for less than a year "The Old Girl" a bit of a stretch?
Lighter wheels will improve any street machine's handling and performance, but for dirt, heavier rear wheels are sometimes an advantage (better traction, more flywheel effect, less spinning)
Since the 790 is offered in several versions, could the heavier rear wheel have been specced for the off-roaders? Just thinking out loud. I don't think KTM makes very many engineering mistakes in this regard, so there must be a reason.
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