Just purchased, pros and cons?

[ward1124]

I am a happy new owner of a 2007 CRF 250R. My first 4 stroker, any pros and cons about this year and model? Any advice anyone can give me will be greatly appreciated. It's been 10 years since I've had a bike. Glad to be back on one

[kx06]

Change the oil frequently and change the air filter after every ride

[MichaelY]

One word.

Valves.

Check 'em, Ride 'em, and Check 'em again.

[2007crf250rman]

One word.

Valves.

Check 'em, Ride 'em, and Check 'em again.

^^^^^ yes yes yes. as my name i have one too

[crf250rrider]

I had 150 hours on my 07 mx ridden. Never a problem. I just did oils every 5 hours air filter every 1-2 rides. Replaced piston at 88 hours. Valves needed occational adjustment but were never replaced.

[MichaelY]

Should i replace piston with aftermarket or oem? My mechanic said oem but I thinkk aftermarket would be better

[crf250rrider]

Should i replace piston with aftermarket or oem? My mechanic said oem but I thinkk aftermarket would be better

Ive used both and they both worked fine. OEM is cheaper

[MichaelY]

is aftermarket more power?

[npg24]

is aftermarket more power?

no unless its a big bore.

[2007crf250rman]

is aftermarket more power?

it doesn't have to be a big bore to get more power. get a higher compression piston. but remember the more compression the more strain on the connecting rod, that is designed for 250ccs. well 249 if u wanna get technical. go with oem pistons. cheaper and more reliable. you cant beat the brand of pistons that started it all. Honda knows their shit. also If u wnna increase valve life. take the entire subframe off and entirely tear down the airbox. and completely reseal it with high temp rtv. 2004-2009 crfs had a very bad air box design which allowed contaminates to squeeze in past the air boot. which does a number on the valves. which answers everybodys questions about why valves go bad lol.. to peoples amazement valves don't stretch

[MichaelY]

it doesn't have to be a big bore to get more power. get a higher compression piston. but remember the more compression the more strain on the connecting rod, that is designed for 250ccs. well 249 if u wanna get technical. go with oem pistons. cheaper and more reliable. you cant beat the brand of pistons that started it all. Honda knows their shit. also If u wnna increase valve life. take the entire subframe off and entirely tear down the airbox. and completely reseal it with high temp rtv. 2004-2009 crfs had a very bad air box design which allowed contaminates to squeeze in past the air boot. which does a number on the valves. which answers everybodys questions about why valves go bad lol.. to peoples amazement valves don't stretch

Is your name mark hilton? You sound just like my mechanic >.> exact words