hey !! people i got a friend with the UM 250 and last day he was putting the HID bulb and Ballast and take out all the front fairings when I saw the frame i notice its the exact frame of the gs500 the fairings has some plastic mounting bracket so you dont have to mod the frame anyway. I try the fairings in my bike and its like if were made for the gs500e. just put on the bracket with bolts and mount the fairings .. that its !!!!

Yeah we figured that out right after UM started really pushing the GT's.  What's even more interesting is that the UM has better suspension and the GS motor will pop right in the frame...tabs are almost identical. So you can get that badass looking 250 and double the hp with the GS block.

Doesnt have better suspension then me 

They look really nice , much prefer the fairings over the gs ones

i like the look of that bike . the digital panel is awesome and the complete bodywork .
i have ran that bike and feel like a toy !! jejeje that is the only thing I dont liked. and i think putting our 500 motor on it with some racing mods will be a killer 500 bike.

Quote from: makenzie71 on July 19, 2007, 12:27:07 PM
Yeah we figured that out right after UM started really pushing the GT's.  What's even more interesting is that the UM has better suspension and the GS motor will pop right in the frame...tabs are almost identical. So you can get that badass looking 250 and double the hp with the GS block.

i dont think it will double the hp, only few more . i have read the specs for that 250cc i think it have 41 hp vs 51hp in old model of gs and 49 in new models

those number are from memory ! if I am wrong please correct me !!

The gs lump would increase Torque , and it would feel alot more soild ,

Quote from: Jay_wolf on July 19, 2007, 01:03:37 PM
The gs lump would increase Torque , and it would feel alot more soild ,

i agree to that ! as i said in the other reply the 250cc feel like a toy and i have race with the 250cc and OH! man
that is for crying  the 250cc still behind me for 100 bike of distance 

its like if I ran with my friends Busa or GSX1000 . i will be 100 bikes in the back

we have one of those UM 250 at work, when the boss is not looking maybe i'll take it apart 

Quote from: DaxFX on July 19, 2007, 01:00:15 PM

Quote from: makenzie71 on July 19, 2007, 12:27:07 PM
Yeah we figured that out right after UM started really pushing the GT's.  What's even more interesting is that the UM has better suspension and the GS motor will pop right in the frame...tabs are almost identical. So you can get that badass looking 250 and double the hp with the GS block.

i dont think it will double the hp, only few more . i have read the specs for that 250cc i think it have 41 hp vs 51hp in old model of gs and 49 in new models

those number are from memory ! if I am wrong please correct me !!

Dreaming........... the highest I've heard of a stock GS making is around 41, to obtain 51 you would have to do considerable engine work.  I would also be genuinly surprised if a 250cc 4-stroke put out more than 30hp or so.

The UM is a Hyosung bike out of Korea.  They have a great reputaion worldwide but are only starting to be sold here in Canada.  Ive only seen 1 on the road so far and it was a 650 S/T not a 250R.

They have a cool cruiser that looks similiar to the Harley VRSC.  The largest that Hyosung has so far are the 650's.

Quote from: makenzie71 on July 19, 2007, 12:27:07 PM
Yeah we figured that out right after UM started really pushing the GT's.  What's even more interesting is that the UM has better suspension and the GS motor will pop right in the frame...tabs are almost identical. So you can get that badass looking 250 and double the hp with the GS block.

Uh, Mak, I believe you were the one who kept saying that it wouldn't work because, while the frame was similar, it wasn't the same frame and there was almost no way you'd be able to git a GS block in there.

Quote from: makenzie71 on June 26, 2006, 07:19:21 PM
The GT250's frame is based roughly on the GS500's, but don't kid yourself...they're nowhere near as similar as the GT650 and SV650.

BURN!!!~!!!!!!!!

Quote from: AlphaFire X5Uh, Mak, I believe you were the one who kept saying that it wouldn't work because, while the frame was similar, it wasn't the same frame and there was almost no way you'd be able to git a GS block in there.

Can only share what I read on the Hyosung forums.  When the 250's first started getting out people said the frames were narrower...since there's at least two folks that I've seen that slid the GS plant right in there as though it was made for it....but, again, all I can post about it is what I've read and translated.

And there's no way that the 250 is cranking out 41hp.  They put between 22 and 24 on the ground.  Getting real close to doubling the power isn't unrealistic.

Quote from: spcterry on July 19, 2007, 01:24:15 PM

Quote from: DaxFX on July 19, 2007, 01:00:15 PM

Quote from: makenzie71 on July 19, 2007, 12:27:07 PM
Yeah we figured that out right after UM started really pushing the GT's.  What's even more interesting is that the UM has better suspension and the GS motor will pop right in the frame...tabs are almost identical. So you can get that badass looking 250 and double the hp with the GS block.

i dont think it will double the hp, only few more . i have read the specs for that 250cc i think it have 41 hp vs 51hp in old model of gs and 49 in new models

those number are from memory ! if I am wrong please correct me !!

Dreaming........... the highest I've heard of a stock GS making is around 41, to obtain 51 you would have to do considerable engine work.  I would also be genuinly surprised if a 250cc 4-stroke put out more than 30hp or so.

from '89 to '96 some sites says 51hp and some says 52hp and from '97 and up is 47hp. i can not find the specs for the UM250 but I am sure that is 41 or 42hp. please some1 try to find the hp for thr UM250

GS500E Specifications
Engine

Type: four-stroke, air-cooled In-Line Parallel Twin Cylinder, DOHC, two valves per cylinder
Displacement: 487 cc
Bore/Stroke: 74.0 mm x 56.6 mm
Fuel System: Mikuni BSR34SS
Ignition: CDI, maintenance-free battery
Compression Ratio: 9.0:1
Engine Redline: 11,000 rpm
Horsepower: 51.3 hp @ 9500 rpm (38.3 kW)
Torque: 30.4 lb-ft @ 7500 rpm (41.2 Nm)
Fuel Economy: 50-60 mpg (4.7 to 3.9 litres to 100 km)
source - http://en.wikipedia.org/wiki/Suzuki_GS500

2004
Overall Length: 2,075 mm (81.7 in)
Overall Width: 745 mm (29.3 in)
Overall Height: 1,045 mm (41.1 in)
Seat Height: 790 m (31.1 in)
Wheelbase: 1,410 mm (55.5 in)
Ground Clearance: 155 mm (6.1 in)
Dry Weight: 169 kg (372 lbs)
Engine type: Air-cooled 487 cc inline-2, DOHC, 4 valves. 47 hp (34.3 kW)/ 9,200 rpm, 40 Nm/ 7,400 rpm.
source - http://www.suzukicycles.org/GS-series/GS500E.shtml

i did some reading up on the UM a few months ago because we sell them at Alpha they seem fine to me.  i have not taken one out for a spin yet but i am getting around to it

Those are factory numbers which are always inflated.........and more than likely are also measured at crank instead of wheel.

I am not a expert on that but i just tell what i read on !!! maybe you are correct but all the websites i have found with specs have the same info..

Quote from: DaxFXfrom '89 to '96 some sites says 51hp and some says 52hp and from '97 and up is 47hp. i can not find the specs for the UM250 but I am sure that is 41 or 42hp. please some1 try to find the hp for thr UM250

The UM cranks 30hp from the factory.  The only 250's that are meaner than 35hp have half as many strokes...and usually half as many cylinders...

http://motorbikes.be/en/Hyosung_Comet_250_2003.aspx

All the I-Twin GS500's crank 45.5 up to the release of the F, then Suzuki said the liquid cooled 500 had 48hp.

http://www.motorbikes.be/en/Suzuki_GS_500_F_2006.aspx

www.motorbikes.be is the best resource for base numbers and specs.

hmm more horsepower for the F version... must be the fairings 

I really wouldn't be surprised if it actually did put a bit more power down...the F blocks may be a bit tighter.