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Big Bore Kits

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Has anyone done a big bore kit on their DRZ? I know Thumper Racing can bore you out, but have not really heard any feedback on them.

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they do a BIG DIFFERENCE. But anything has risk. Since the cooling system is made for a 400 engine it can heat a little bit more. but then again a big bore kit is usally around 25cc -40cc more. So it should be fine. If you completely grow out the power then big bore. If your not confortable on the bike . dont do it ... you could hurt yourself since a drz400 big bored can leave alot of 450 in the dust and maybe some 530. So be carefull on that baby.

happy riding

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Kind of sad that no one answered the guy's question in 9 years!!

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Kind of sad that no one answered the guy's question in 9 years!!

I wonder if he still has his bike.

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Looks like his last post was in January 2004. At that time it appears he still had his DRZ.

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they do a BIG DIFFERENCE. But anything has risk. Since the cooling system is made for a 400 engine it can heat a little bit more. but then again a big bore kit is usally around 25cc -40cc more. So it should be fine. If you completely grow out the power then big bore. If your not confortable on the bike . dont do it ... you could hurt yourself since a drz400 big bored can leave alot of 450 in the dust and maybe some 530. So be carefull on that baby.

happy riding

thanks for letting us know.i was wondering.

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M/T 436 done 15000 miles now with one new piston and ring set and about to do another set of rings , they usally last around 7000 miles or so before a re-ring is needed. :thumbsup:

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I think hes finally ready but be super careful if you do. Id hate to see someone get hurt..

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