Big Bore Kits

[rparks]

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.

[MrKTMrider]

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

[Harvey600]

Eddies 470s don't seem to have a problem with cooling

[ptgarcia]

I think this is the oldest thread I've seen revived yet. ?

[Harvey600]

Jeysus! ? even I didn't notice!?

[PBMW]

Nine years....

Gotta be a record.

[RW24JIMMY]

When I seen the question I broke out laughing. Has anyone done a big bore?

[EddiePA]

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

[SoylentGreen]

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

I wonder if he still has his bike.

[EddiePA]

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

[SoylentGreen]

I think this is the oldest thread I've seen revived yet. ?

Nope: Check this one out.

https://www.thumpertalk.com/forum/showthread.php?t=47165

[Wayward Son]

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.

[Chrizzle]

Someone should give him a call and let him know ?

[packman]

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. ?

[Rob H]

Nope: Check this one out.

https://www.thumpertalk.com/forum/showthread.php?t=47165

?

[ptgarcia]

Wow, Patrick's on a roll! ?

[mdlifcrisis]

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