KTM 400 SX Motorcycles Reviews (2)
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2003-06-14 2002 KTM 400 SX Motorcycles View Listings

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This is a rock solid ride, with easy maintanance. However, If your looking to run with modified 250s and 450 Hondas and Yamahas on a motocross track than factor in $500 for a Thumper racing 450 kit!!!!!!!!!! As a 400 the KTM just doesnt have the grunt and being a single cam motor it'll never rev like the Japanese bikes. But after the Thumper kit, it'll run hard through the midrange and is still a breeze to ride! Another thing of note, if your tracks arent super fast, 18mm triple clamps are the ticket. My KTM settles into turns like my 2000 CR 250 did!!! My only other mod is a Pro Circuit slip on, not alot of gain, but stock is to quiet. With the 450 kit installed this bike is 5 star plus, Happy Hunting MXP
- mike peters, Terre Haute, Indiana

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2002-07-12 2002 KTM 400 SX Motorcycles View Listings

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I bought the 400 SX first release year (2000) when only about 500 were imported in the US. I do not race it on the track and prefer Woods Riding mostly. The bike has a smooth tractable power band. I increased the rear sprocket from a 49 to a 52, put a Pro circuit T-4 slip on silencer, Scott's steering dampener, revalved the front and rear suspension for Woods riding and run 100 octane race gas. I ride with my friend that has a 2001 YZ426F that I ride often as well. Although his bike certainly has more power I find that I can ride much longer without feeling like I am riding a 2000lb bull in a rodeo. The 400 has power equivalent to a strong 250 but is has all the benefits of a 4 stroke. The back compression in the woods is essential. The KTM 520 is still the big bore brother and has pull-arms-out-of-the-socket feel but for an all day screamer even the pros agree the KTM 400 SX is hard to beat that won't beat you up.
- Dennis, Raleigh, North Carolina

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