best mods for extra HP

[matt_dawson_CRF250R]

I have $300 U.S

What is the best HP related mod for my CRF250 "06"?

It seems to lack responsiveness in the higher gears , it is lucky to pull a 4th gear wheelie, the engine is perfect

I"m thinking maybe it is the stock jetting?

I want to keep the stock gearing (13 and 52) but wouldn't mind finding a relatively cheap mod to increase overall power output, more exitement.

[willmoto]

save some more money and do it when you need a piston and rings .

[gtracer]

I would have to say Jetting would be the most Bang (hahah bang = power lol) for your buck! Other than cams, vlaves, exhaust, big bore, pistons Rev-Box, but considering you have 300$ I would go for jetting and maybe Rev-box not sure tho! ?

[crf150R]

graphics ?

[ridered55]

Upgrade to a 450... That's a serious HP upgrade...

[gtracer]

Upgrade to a 450... That's a serious HP upgrade...

If you can find a 450 for 300$ SOLD!! ?

[MMotohead]

By far the best low cost mod is the Factory R&D P38 lightening. Jetting is not a mod like proper tire air pressure, its basic tuning. The AP cover also comes with a fuel screw for a bargain $79.00

[mxblake332]

Buy a KTM250SXF that's a serious upgrade in HP stock, and more reliable... ?

hahahahahah ktm more reliable then a honda get a grip bro ktm hasnt got a aluminum frame they need to move into the 21st cen.

[Dan CRF250]

jet the thing, thats where your top end power is, but a good airfilter (twin air) (jet: $7 from a shop, or a jet kit is $70, and a twin air is like $20)

depending on the hours, you could think about putting a high comp. piston in, JE sells a good 13.5:1 for $140 if i recall correctly,

[thor_386]

Stage 2 Hotcams are designed for high end power. Im sure Crower can grind ya up something special too for around 300 bucks

[Dan CRF250]

Stage 2 Hotcams are designed for high end power. Im sure Crower can grind ya up something special too for around 300 bucks

with a high performance cam you have to get valve springs witch cost some $ too

[kaakau]

NOS baby! +100hp ?

[thor_386]

with a high performance cam you have to get valve springs witch cost some $ too

Got Stock Springs with my stage 1 hotcam, but I think the lift is the same as stock, but the duration is longer. Could be wrong ?

[fmf-crf]

with a high performance cam you have to get valve springs witch cost some $ too

VALVE SPRINGS??!

As far as i know most of the ( stage 1 & stage 2 ) camshafts all could be fitted to a pretty much stock head with very little modification needed, maybe just the valves need to be shimmed within camshaft specifications..

Then again, if you do go for a camshaft, make sure whoever is installing it for you, get them to check the springs out anyway and if they show signs of wear/damage... better off replacing them.

[matt_dawson_CRF250R]

What jetting would i need to use?

Spose it would be dependant on the conditions.

[crowerpowerhp]

you can get our proven G1 cam and intake valvesprings for 219$ in a regrind.....it adds more power than a 700$ pipe or porting, the springs we use actualy help with longer valve life and more rpm's because of no more seat bounce when you over rev it.....the jetting you run stock main and a 42 - 45 pilot....what year is the bike ? if it's old ( 40 hrs plus ) you need your valves replaced for optimum performance gains.

[emoney]

Well If Crower going to spam, then MDK SE can make your carb run flawlessly for $$$. Need to change out just about every jet and reset the float height. No need for P38s and Boyesen coovers. Free mod would be to set your valve clearance to .004 intake and .006 exhaust. Added valve lift and duration for a little more peak HP. Add a high comp piston when it comes time $ plus labor, that should get you close to 36HP for next to nothing. Hope I haven't upset anyone ?

[matt_dawson_CRF250R]

thats funny that, my valves closed over today whilest riding, very dusty conditions (Australia), bike got harder and harder to start and now, won't start, I hope that not to much damage has been done, I might ask my local dealer about the G1 cam and intake valvesprings from crower power, do you guys have an Aussie distributor?

[Throttlejockey]

Well If Crower going to spam, then MDK SE can make your carb run flawlessly for $$$. Need to change out just about every jet and reset the float height. No need for P38s and Boyesen coovers. Free mod would be to set your valve clearance to .004 intake and .006 exhaust. Added valve lift and duration for a little more peak HP. Add a high comp piston when it comes time $ plus labor, that should get you close to 36HP for next to nothing. Hope I haven't upset anyone ?

Crower is a TT sponsor. He isn't spamming.

[crowerpowerhp]

you can buy direct or go to Moose Xsportz in au .... , we also stock OEM honda valves / heads for that rebuild your gonna do.....you will be roosting hard with the G1 cam setup in a fresh rebuild with new valves and race springs. Motorsport outlet will carry these crower part # 's very soon for the early and late style 450 cams, G1 - 250's , G1 - 150 r 07'cams....all the new stuff.