i have a 2001 ds 650 i've put a pro circuit t4 exhaust jet kit 14 tooth front sprocket and a rwr cdi box with after market rear tires and i was wondering if any body knows anything else i can do to it with out getting internal.

 

K&N air filter with outerwear
Better skids
bigger carb and ported intake isn't considered interal mods. But it does put a dent in the wallet[img]i/expressions/face-icon-small-wink.gif[/img]
you could always add some bling bling as well

 

like eagle said ported intake, K&N filter start looking at ways to drop pounds!! a lighter ds is a fast ds

 

Get an 05 carb slide spring. It is shorter and lighter for faster response. It makes a pretty big difference in your low end power.

 

ok ill have to try that thanx alot

 

i like those rims and rear plastic were did you get them

 

Omf rims and factory rear plastic trimmed.