Power

[Seano300ex]

How can i get more power out of my 300 with out gettin a big bore kit.i want to keep it reliable also.it already has a hmf pipe with a fmf header and a white brothers air filter and a jet kit
thanks

[YFZ450Ridr]

mabye get a cam or an aftermarket CDI.

[KOG]

get a diffrent carb and change the sprocket

[bwamos]

Originally posted by Seano300ex
How can i get more power out of my 300 with out gettin a big bore kit.i want to keep it reliable also.it already has a hmf pipe with a fmf header and a white brothers air filter and a jet kit
thanks

Stock Bore piston 11:1 compression & Stage2 Cam.

If you dont want to open up the engine. just a Stage1 cam.

But you will see a lot more out of an 11:1 piston and Stage2 cam. You just need a local shop to hone your sleeve for you before you put in the new piston.

[kd5sfq]

There are many ways to get more power and still be reliable.

Good exhaust system
good airflow
more aggressive cam
porting
higher compression
better carb
Aftermarket CDI

[bwamos]

Originally posted by kd5sfq
There are many ways to get more power and still be reliable.

Agree

Good exhaust system - he has HMF Slipon & FMF Header. Pretty good setup.

good airflow - He's got aftermarket filter. Should be goo there.

more aggressive cam - Agree

porting - Sure, but if putting in the money, I'd get a 297cc to go with it.

higher compression - Most definatly. 11:1 is perfect for 300ex's if oyu want ot use pump.

better carb - 400ex Carb + 350x air boot. Great upgrade.

Aftermarket CDI - Sure.. but I'd put that in with a full engine job. 300ex doesn't have awsome upgrades like the CRF ignition on a 450r.

[kd5sfq]

I removed the air box and air boot... Just clamped a $10 foam filter right on the carb. I change it after each moto.

The down side is washing the quad... The filters tend to get wet from spraying the engine with a hose so it has to be covered with a plastic bag before washing.

[YFZ450Ridr]

Originally posted by kd5sfq
I removed the air box and air boot... Just clamped a $10 foam filter right on the carb. I change it after each moto.

The down side is washing the quad... The filters tend to get wet from spraying the engine with a hose so it has to be covered with a plastic bag before washing.

get an outerwears prefilter. itll take care of the water. water beads off of mine when it touches it.

[rancher350rider]

did the hmf match right up with the fmf header ??

[Seano300ex]

Thanks for all the ideas guys and no we had to cut about 5 inches off the header for it to connect to the pipe