KX 100 Mods

[Jimbokdx]

OK... I am getting my kid a KX 100. We do a lot of hill climbing stuff, so he needs the low end power. I am even willing to give up some on the top end to get it. I guess the two best things to do are a pipe and porting. Which one should I do first (i.e. most bang for the buck)?

Jimbo

 

[Racer#213]

I have a Fatty on mine and it gives itg quite a gain in the mid range and about the same ( a little better) on the top- end and low-end. I would suggest this pipe. Also unless you need a spark arrestor get the titianium2 and pair it with the fatty and that is what fmf suggest for a combo. Also try a larger rear sprocket.

 

[cr25096er]

porting is the best bang for the buck. but an even easier mod would be a larger rear sprocket or smaller contershaft sprocket.

 

[LocoCD]

The least expensive way to add some good bottom end is carbon tech low tension reeds.

Do a search on "KX 100" there are a lot of posts, I and others have done extensive mods making the KX 100 an exceptional trail/enduro/hare scrambles bike.

 

[Jimbokdx]

Thanks Loco,

I ordered the Carbon Tech LT reeds. I am also getting a smaller front sproket. What should I do next... Fatty Pipe or cylinder porting?

Jimbo

 

[Racer#213]

hey when you test those reeds out, pm me please. I was thinking about ordering some reeds

 

[LocoCD]

We went with an SST pipe/TC2. It seems to be a good combo. We've not felt the need to do any porting yet.

FYI - Utah Sport Cycle makes an excellent full coverage skid plate http://www.utahsportcycle.com/.

 

[redrider50]

My friends KX 100 came stock with a right dandy much of low end hit. I dont know if yours is different but his bike is all low end. Of course we ride MX together so I dont know much about hill climb. C ya!

 

[Jimbokdx]

OK... so far, I have installed a 12T front sproket, Carbon Tech LT Reeds and played with the Jetting (but I ended up with stock jetting). The carbon tech reeds worked well. They gave more low end and made the mid range hit a lot smoother. I think next may be a fatty pipe. I really like the little bike alot. My son and I will be out tommorow morning. I am sure he is going to blow my doors off!

Jimbo

 

[hessianmx111]

also when you get the fatty be sure to get the shorty silencer

 

[Jimbokdx]

I'd like to get the shorty silencer, but I need a spark arrestor. Which one would best suit my needs??

Jimbo

 

[Racer#213]

i got the tc2 and am happy with it. don't feel any loss in pow