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Old 11-01-2013, 12:41 PM   #1
drdfblackm OP
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Joined: Sep 2006
Location: Safe haven from Zombies aka Flagstaff AZ
Oddometer: 866
RMX vs KDX for a big guy

I am looking at comparing RMX 250 with a KDX 220. I am looking for a winter project and making a nice little woods bike/single track bike. I know both of these bikes are heavier than KTM 250EXC, but they are cheaper and a little easier to find in my area. I know parts for an RMX are harder to find. It seems to me that the KDX is a smaller bike but that might be my imagination. So any thoughts/input would be appreciated.
These are not the droids you are looking for.....
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Old 11-01-2013, 05:02 PM   #2
Edmond Dantès
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Joined: Jul 2009
Location: Château d'If
Oddometer: 617
Both are great bikes.
The KDX220 has a big following in the U.S and folk rave about its woods ability.

Check out this site:

As for the Suzzie:

Scoll down the left side to the RM-RMX Series link.

Word around the campfire is that "S" version is the one to get:RMX250S. Apparently pushing out a few more ponies, and better sprung than the earlier models.

Comparison of Dimensions

RMX 250 S 2002
Overall Length: 2,260 mm (89.0 in)
Overall Width: 880 mm (34.6 in)
Overall Height: 1,275 mm (50,2 in)
Seat Height: 945 mm (37.2 in)
Ground Clearance: 325 mm (12.8 in)
Wheelbase: 1,480 mm (58.3 in)
Dry Weight: 113 kg (248 lbs)
Engine type: Water-cooled 249 cc single cylinder 2-stroke. AETC 2.

The KDX220
Dry weight:101.0 kg (222.6 pounds)
Seat height:919 mm (36.2 inches) If adjustable, lowest setting.
Overall height:1,229 mm (48.4 inches)
Overall width:889 mm (35.0 inches)
Ground clearance:340 mm (13.4 inches)
Wheel Base
1,435 mm (56.5 inches)
Fuel capacity:10.97 litres (2.90 gallons)

I couldn't find the overall length of the KDX, but comparing the other dimensions, the RM is the bigger of the two, but 20 pounds heavier.

I have never ridden the 220 but have sat on a few and they are smaller than my KDX250. I have ridden a couple of the RMXs and they are fine machines and didn't feel that small for me at 6 feet 8 inches and 264 pounds. (Though at my height all bikes feel small )

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Old 11-03-2013, 05:43 PM   #3
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Joined: Feb 2007
Location: Phoenix, AZ
Oddometer: 1,501
I loved my RMX and only moved up to a 300EXC because I am a torque junkie. I found that it had plenty of power once on the pipe and handled really well. It was also the smoothest shifting bike I ever owned. Mine had slight clutch chatter marks that made the clutch a little draggy. I'm told Suzuki clutch baskets were notoriously weak. Many guys upgrade to a Hinson clutch basket but I was too cheap.

They are softly sprung from the factory. I am 180 pounds and mine wallowed badly until I upgraded the springs.
The stock tank is great. Somewhere over three gallons and also narrow. It extends very far down. Mine had a 13 tooth sprocket and I went back to the factory 14 tooth. It would climb trees with the 13. The RMX had a weird triple head gasket as opposed to the RM single. I think they were aiming to mellow the power. I heard rumors that you could have an RM motor by going to a single gasket and some minor port work.
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