Kawasaki GPX250

[gamgee]

the tank on it actually ended up being in bloody good nick which was lucky, it looks like someone has already done the POR15, job on it though as a just in case, i'm still going to drain it out tho, in the next few weeks, just so i no for sure when i go to use the reserve i'm not going to be feeding a mixture of water and rust into the carbs, oh and it's got a fuel filter on it, so i will know if it starts rusting anyway

[Mr. Peanut]

If the only thing that counts with a 250 is how fast it is, why are y'all farting about with 4 strokes. Get a two smoker. They rule, OK.

(Note the first word in the post !)

I sometime wonder why I bother. EXACTLY ^_^

[TygerTung]

My wife has one of these, they are a great bike. Cheap on fuel, reasonably fast, good handling, good close ratio gearbox.

I had it going around the hills today, very good performance, would easily beat one of those 4 cylinder 250s as they have no midrange whatsoever which is what you want for twisty winding.

They do about 160 lying on the tank.

I'd highly recomend one. Probably the best choice if you want a 250 4 stroke.

[sil3nt]

My wife has one of these, they are a great bike. Cheap on fuel, reasonably fast, good handling, good close ratio gearbox.

I had it going around the hills today, very good performance, would easily beat one of those 4 cylinder 250s as they have no midrange whatsoever which is what you want for twisty winding.

They do about 160 lying on the tank.

I'd highly recomend one. Probably the best choice if you want a 250 4 stroke.

I had one for years and they are fantastic. No way in hell would it come close to beating a 4 cylinder 250 though!

[TygerTung]

It would depend on the situation.

In a straight line 4 cylinder would kill the GPX, but around some twisty hills the GPX would be king. They're lighter and have much more midrange which is the more important than all out power around the hills.

I've beaten ZXR250s on my Honda CG 125, seeing as it was much lighter and could tackle the corners better, which shows you that more power isn't necessarly any help.

GPX250R 27.9 kW (37.4 hp) @12500 RPM
18 ft·lbf (24 N·m) @ 10,000 rpm
138 kg

CBR250RR 45 PS (33 kW) @ 15,000 rpm
21.5 N·m (15.9 lbf·ft) @ 12,000 rpm
142 kg

Not a big difference in weight, but you will notice that the CBR is making it's max torque a lot higher up, and also it's making less of it, which would indicate a narrower band of usable power. You would really have to rev it to make it go anywhere which makes it more uncomfortable to ride also.

Also another thing is that the CBR has much wider tyres- 110 on the front and 140 on the rear, as opposed to the GPX having a 100 on the front and a 130 on the rear. The skinnier tyres will corner a lot better, seeing as they're already probably a bit big for such a small bike. My RZ350 has considerably more power and is heavier and only has a 90 on the front and a 110 on the rear, and I havn't had it slip, even when hanging off and scraping the pipes, stand, and footpegs at the racetrack.

The CBR also has radial tyres which are very expensive.

It really depends on what sort of riding you want to do- straight line, or hillwork. Personally I like hillwork, so I'd go for the GPX, and to be honest if you are wanting to do straight line work, you'd probably be better off with a bigger bike anyway.


Sources http://en.wikipedia.org/wiki/Kawasaki_Ninja_250R http://en.wikipedia.org/wiki/CBR250

[Akzle]

is there some award for the longest thread dredge going on that im unaware of?

[sil3nt]

You stick Andrew Stroud on both the GPX 250 and the ZXR250 and the only race I could see the GPX winning would be a fuel mileage race.

Saying you beat ZXR250s on your CG125 reminds me of the guy that frequented this 250 section claiming his Hyosung 250 was beating Ducatis down the back straight at Pukekohe. Who cares that the Ducati was probably on half throttle just cruising. Makes for a good story doesn't it?

[mossy1200]

I just checked out a bike that sold so long ago that it must have expired 5 years ago.
I wasted 20mins of my life on a biblical tale about a yesteryear bike.

[nzspokes]

My wife has one of these, they are a great bike. Cheap on fuel, reasonably fast, good handling, good close ratio gearbox.

I had it going around the hills today, very good performance, would easily beat one of those 4 cylinder 250s as they have no midrange whatsoever which is what you want for twisty winding.

They do about 160 lying on the tank.

I'd highly recomend one. Probably the best choice if you want a 250 4 stroke.

Have you ever ridden a decent inline 4 250? Ive ridden a GPX and a Hornet 250. There is no way the GPX could keep up. My old CBX250rs single was quicker to 130 than a GPX.

Epic dredge.

[TygerTung]

Have you ever ridden a decent inline 4 250? Ive ridden a GPX and a Hornet 250. There is no way the GPX could keep up. My old CBX250rs single was quicker to 130 than a GPX.

Epic dredge.

I once rode a Kawasaki Bailus once, it was shit. Didn't make any power until you were revving somthing like 12 or 14 thousand RPM and it would drop out of the powerband on gear changes. There seems to be some kind of design fault there.

Actually it's funny you should mention the CBX250, because I had a race against one of them one night when I was test riding the GPX, absoultly smashed it. I think it was the only time I've done a wheelie on the GPX, was quite a fast takeoff.

[mossy1200]

http://www.trademe.co.nz/Browse/List...x?id=650016325

finishes in 40 mins.
could look good sitting next to my 14

[nzspokes]

I once rode a Kawasaki Bailus once, it was shit. Didn't make any power until you were revving somthing like 12 or 14 thousand RPM and it would drop out of the powerband on gear changes. There seems to be some kind of design fault there.

Its a motorcycle, not a car. Rev its nuts off. Bailus had a 19k red line from memory.

[TygerTung]

You stick Andrew Stroud on both the GPX 250 and the ZXR250 and the only race I could see the GPX winning would be a fuel mileage race.

Saying you beat ZXR250s on your CG125 reminds me of the guy that frequented this 250 section claiming his Hyosung 250 was beating Ducatis down the back straight at Pukekohe. Who cares that the Ducati was probably on half throttle just cruising. Makes for a good story doesn't it?

I'm sure Andrew Stroud could go faster on a ZXR, but he's a professional racer isn't he? For the average person, it's going to be easier to ride a bike with a whole lot more midrange fast.

I think the guy on the ZXR was just a shithouse rider but there you go. I had only been riding for a couple of months anyway, I suppose you don't worry about a dropping a $300 dollar bike so much eh? It was only one ZXR that I beat.

I can't see any hyosung 250 beating any ducati's down a straight.

[nzspokes]

http://www.trademe.co.nz/Browse/List...x?id=650016325

finishes in 40 mins.
could look good sitting next to my 14

I had the GPZ version. 59hp I think. went friggen well and light to. Isnt the gpx steel framed and heavy?

[TygerTung]

I had the GPZ version. 59hp I think. went friggen well and light to. Isnt the gpx steel framed and heavy?

Both steel frame. I know the GPX600 and the GPZ600 are pretty much exactly the same other than minor fairing differences.