Best cheap performance mods for a 2003 kdx220

Got questions? We got answers....
Drmiller98
Member
Posts: 21
Joined: 12:43 pm Aug 03 2014
Country:

Best cheap performance mods for a 2003 kdx220

Post by Drmiller98 »

I already have the airbox drilled out and am looking into a full exhaust system (gnarly wood/powercore II) so what else is there to do?
"You live more for 5 minutes going fast on a bike than other people do in all of their life.” Marco Simoncelli
User avatar
KDXGarage
KDXRider.net
KDXRider.net
Posts: 14047
Joined: 06:45 am Nov 01 2004
Country: United States of America
Location: AL, USA
Contact:

Re: Best cheap performance mods for a 2003 kdx220

Post by KDXGarage »

Define cheap (to you).
Thank you for participating on kdxrider.net. :bravo:
To post pictures from a device: viewtopic.php?f=88&t=24128
3j3j3j
Member
Posts: 213
Joined: 07:38 pm Mar 07 2014
Country:
Location: North Idaho

Re: Best cheap performance mods for a 2003 kdx220

Post by 3j3j3j »

Drmiller98 wrote:I already have the airbox drilled out and am looking into a full exhaust system (gnarly wood/powercore II) so what else is there to do?
If you are on a budget, forget the powercore II. It offers no performance benefit, besides a little weight loss.
Drmiller98
Member
Posts: 21
Joined: 12:43 pm Aug 03 2014
Country:

Re: Best cheap performance mods for a 2003 kdx220

Post by Drmiller98 »

Under $200 is cheap for me (being only 16 :neutral: )
"You live more for 5 minutes going fast on a bike than other people do in all of their life.” Marco Simoncelli
Drmiller98
Member
Posts: 21
Joined: 12:43 pm Aug 03 2014
Country:

Re: Best cheap performance mods for a 2003 kdx220

Post by Drmiller98 »

3j3j3j wrote:
Drmiller98 wrote:I already have the airbox drilled out and am looking into a full exhaust system (gnarly wood/powercore II) so what else is there to do?
If you are on a budget, forget the powercore II. It offers no performance benefit, besides a little weight loss.
I would but my friend has one for sale brand new for $40.. So why not? Lol :supz:
"You live more for 5 minutes going fast on a bike than other people do in all of their life.” Marco Simoncelli
3j3j3j
Member
Posts: 213
Joined: 07:38 pm Mar 07 2014
Country:
Location: North Idaho

Re: Best cheap performance mods for a 2003 kdx220

Post by 3j3j3j »

Look into the Ron Black carb and head mods. They arent too bad
Drmiller98
Member
Posts: 21
Joined: 12:43 pm Aug 03 2014
Country:

Re: Best cheap performance mods for a 2003 kdx220

Post by Drmiller98 »

3j3j3j wrote:Look into the Ron Black carb and head mods. They arent too bad
How much?
"You live more for 5 minutes going fast on a bike than other people do in all of their life.” Marco Simoncelli
3j3j3j
Member
Posts: 213
Joined: 07:38 pm Mar 07 2014
Country:
Location: North Idaho

Re: Best cheap performance mods for a 2003 kdx220

Post by 3j3j3j »

165 for carb. 55 for head
3j3j3j
Member
Posts: 213
Joined: 07:38 pm Mar 07 2014
Country:
Location: North Idaho

Re: Best cheap performance mods for a 2003 kdx220

Post by 3j3j3j »

Another option is boyesen power reeds for around 40
3j3j3j
Member
Posts: 213
Joined: 07:38 pm Mar 07 2014
Country:
Location: North Idaho

Re: Best cheap performance mods for a 2003 kdx220

Post by 3j3j3j »

Search for the best of the best mods thread on here
Drmiller98
Member
Posts: 21
Joined: 12:43 pm Aug 03 2014
Country:

Re: Best cheap performance mods for a 2003 kdx220

Post by Drmiller98 »

There's too much to read on them lol did you get the RB head and carb done? And do boyesen reeds have better fuel delivery or what?
"You live more for 5 minutes going fast on a bike than other people do in all of their life.” Marco Simoncelli
User avatar
KDXGarage
KDXRider.net
KDXRider.net
Posts: 14047
Joined: 06:45 am Nov 01 2004
Country: United States of America
Location: AL, USA
Contact:

Re: Best cheap performance mods for a 2003 kdx220

Post by KDXGarage »

What is the condition of the reeds in the bike now? New reeds are not much.

If you want the bike easier to ride fast vs. the engine making more power, then look into suspension.
Thank you for participating on kdxrider.net. :bravo:
To post pictures from a device: viewtopic.php?f=88&t=24128
newbbewb
Supporting Member II
Supporting Member II
Posts: 579
Joined: 12:20 am Jan 22 2012
Country:
Location: sw washington state

Re: Best cheap performance mods for a 2003 kdx220

Post by newbbewb »

a piston if yours is still stock. then RB carb and head, then pipe and reeds. if it was mine then freshening up of the suspension would be before any of this.
93 kdx200-Highly modified
89 kx125/kdx200E engine
Buelldustin@gmail.com
User avatar
scheckaet
KDXRider.net
KDXRider.net
Posts: 3740
Joined: 12:09 am Nov 10 2005
Country:
Location: edmond oklahoma

Best cheap performance mods for a 2003 kdx220

Post by scheckaet »

new piston if it s stock.
J.E.T.T.I.N.G.

Suspension to your weight. (spring, valve)
User avatar
diymirage
Supporting Member II
Supporting Member II
Posts: 2909
Joined: 05:00 pm Sep 19 2011
Country:
Location: michigan

Re: Best cheap performance mods for a 2003 kdx220

Post by diymirage »

cheapest mod for the KDX is to remove the seat
newbbewb wrote:DIYmirage has it right.


-1996 KDX 200 woods weapon (converted to 99 green body)
-1996 KDX 200 plated street toy (barney edition)
-2003 Yamaha TTR125-L (wifeys bike)
-1997 KDX 220 project bike
User avatar
rbates9
Supporting Member II
Supporting Member II
Posts: 3164
Joined: 06:07 pm Apr 27 2010
Country:
Location: UPSTATE New York

Best cheap performance mods for a 2003 kdx220

Post by rbates9 »

I would skip the RB carb until you run out of things to spend money on. Like said before, make sure the engine is good then go after the suspension.
Drmiller98
Member
Posts: 21
Joined: 12:43 pm Aug 03 2014
Country:

Re: Best cheap performance mods for a 2003 kdx220

Post by Drmiller98 »

My dad did the suspension for me (160lbs) and I just ordered one boysen carbon reeds. Just figured out about a guy near me who takes 220 engines and bords them to 250s and mods the carb so I may do that :supz:
"You live more for 5 minutes going fast on a bike than other people do in all of their life.” Marco Simoncelli
User avatar
scheckaet
KDXRider.net
KDXRider.net
Posts: 3740
Joined: 12:09 am Nov 10 2005
Country:
Location: edmond oklahoma

Best cheap performance mods for a 2003 kdx220

Post by scheckaet »

i'd be weary about anyone boring to 250 a kdx jug. As far as i know (i.e from pro and reputable shops), 225 is about as far as you can go and keep the valves...
KarlP
Supporting Member III
Supporting Member III
Posts: 1484
Joined: 02:26 pm Jun 29 2005
Country:
Location: Alabama

Re: Best cheap performance mods for a 2003 kdx220

Post by KarlP »

In my opinion the best bang for the buck on a 220 is the RBD head mod. This assumes intake and exhaust, including jetting, have been gone through.
'08 KTM200xc
'99 CR/KDX Hybrid with that RB stuff done to it
KX100 for the boy
Drmiller98
Member
Posts: 21
Joined: 12:43 pm Aug 03 2014
Country:

Best cheap performance mods for a 2003 kdx220

Post by Drmiller98 »

scheckaet wrote:i'd be weary about anyone boring to 250 a kdx jug. As far as i know (i.e from pro and reputable shops), 225 is about as far as you can go and keep the valves...
He's been doing it for 10 years, I'm not sure what all he does but a 250 bore or maybe a different cylinder head and piston or something to get it to a 250 is pretty much all I know as of now. I think the guys last name is Verucci or something close if anyone's ever heard of him, he's pretty well known in my area (Pennsylvania)
"You live more for 5 minutes going fast on a bike than other people do in all of their life.” Marco Simoncelli
Post Reply