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Mount Fitzroy, Argentinian Patagonia



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  #1  
Old 14 Nov 2014
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Info on KTM 620 Adventure
I picked this up the other day

Anyone have any info on them, made before the 640 but with the grey engine but the early 640 had the black engine and then the later ones had the grey one fitted?!?!

It is not like the 640 but more like its own bike as quit a few differences

Called a KTM UK dealer and they said they don't know much about them and they were not sold in the UK, HPI check shows it is a import

anyone know about this bike?

Apparently it is very rare in the UK they said, i have never seen another one for sale here.........
Last edited by WesleyDRZ400; 17 Jul 2015 at 14:11.
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Old 14 Nov 2014
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hi have you seen this KTM 620 LC4 Adventure hope this helps steve
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Old 14 Nov 2014
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Originally Posted by ssbon View Post
hi have you seen this KTM 620 LC4 Adventure hope this helps steve
Thanks for into, yes saw this but trying to see if anyone else had owned one on here, i know no one eles in the UK on other forums........

Also nice Orange side case's on that link..........
Last edited by WesleyDRZ400; 17 Jul 2015 at 14:11.
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Old 15 Nov 2014
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These bikes were sold in Switzerland. The silencer was lower and kept below the line of the panniers. The bike came with the first generation Touratech Zega Boxes. From what i remember, the engine was quite rough. Also some engines had problems with faulty aluminium parts which led to loss of oil through hair cracks in those parts. But nothing which couldn't be fixed. Overall, the 640 engine was better and smoother.

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Old 15 Nov 2014
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Originally Posted by Globetrotter View Post
These bikes were sold in Switzerland. The silencer was lower and kept below the line of the panniers. The bike came with the first generation Touratech Zega Boxes. From what i remember, the engine was quite rough. Also some engines had problems with faulty aluminium parts which led to loss of oil through hair cracks in those parts. But nothing which couldn't be fixed. Overall, the 640 engine was better and smoother.

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Cheers for the info when i give it a strip and clean i will have a good look over it. Also will change the clutch shaft bearing as heard these are common parts to fail
Last edited by WesleyDRZ400; 15 Nov 2014 at 14:19.
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Old 20 Nov 2014
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Hi Weslly,

This bike is pretty much the same as the 640, only the crankshaft had a 2mm shorter stroke and the cylinder head a 1mm shallower combustion well.. Most parts will interchange between the older and newer models... I built a 640 from parts that I scavenged up and some parts I put in the engine were from the 620s as outlined in this thread:
New 640 Build from the Ground up - ADVrider

After 02 the 640 had its biggest update, going to the hi flo head and juice clutch



620 info look into this thread:
KTM 620 Adventure E/GS Adventure History - ADVrider

And look in here for lots of info on the LC 4 series:KTM LC4 (640) Thread Index - ADVrider
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Old 20 Nov 2014
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Thanks for the info, i was looking at your build thread yesterday after a Google search, very impressive.

I built a KDX200E frame up this year which was fun sourcing parts of ebay and fixing it, had to grind and weld the frame to fix some parts which was good learning also and understanding the basics with a 2 smoke

Planing a engine strip on 4T bike which needs some TLC and to learn how it all works.

Yes it is running fine, did around 100 miles on green lanes with no issues so far so good. Needs a few little fixes but nothing major

Good to know all parts are same as the 640.

Yes i noticed the later models had the high flow head, much difference in ride?
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Old 21 Nov 2014
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The high flo engines as delivered are not much different in power than the older ones... The difference is that with the larger valves you can safely modify the engine to produce more power than available on the older engines..
With my bikes I am mainly focused on longevity and not on chasing HP, as the bike puts out more than enough power for my needs.. The best thing to do if you have a restrictive stainless steel supertrapp muffler or similar on the bike is to toss it in favor of something that flows a little better.. With the stock restrictive pipe in place the heat is not allowed to exit the combustion chamber as fast resulting a hotter running top end which contributes to shorter valve life among other things.. I am running the SXC can on both of my bikes and it never gets finger burning hot like the old can did..

You likely have a low slung pipe on your bike that probably has a better flow rate than the newer EPA rated OEM stuff so you may be ok..

My main bike now has 190,000+ km on it and is running strong... For where I live and ride this is the perfect bike even though it is now coming on 8 yrs of being out of production...
Last edited by Island Hopper; 26 Nov 2014 at 11:33.
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