will never look back!

You'll be looking back once you have to shim the valves. lol Same with any 4 stroke banger/mx bike. I should have gone the trail version. But the mx series are so much fun. Some original photos have not been recovered yet.

Yz250 with an 11oz flywheel weight & a 52 tooth rear sprocket, great for the bush & easily converted back too racing.

ive recently bought a 08 crf450x. awesome bike and i had no problems keeping up with my mate on his 09 yzf450 both our bike have aftermarket pipes, jetted and aftermarket hi flow air filters. have only had it about 5 weeks and 2 weeks ago it seized, am pretty pissed off and dunno why it did it, came with full service history and i changed everything when i got it, oils + filter, air filter, spark plug, checked valve clearances, etc. so it will be getting a rebuild very soon, it was a very fun bike before that happened and cant wait to get back out there

Stroke it more then twice & your playing with it ---------- Post added 09-09-10 at 21:01 ---------- I have heard a fair few maintenance issues with the 2009/2010 crf450, Mate has one straight off the showroom floor he was having accelerator cable issues the bike would just go flat bikkies every now and then when he was riding it & then go back to normal. He has to do top end adjustments every 10 hours, hes been told if he leaves it longer it will cost him alot of money, which kind of sucks because he got the road reg'd model the crf450x. My old boss had a crf450r 2009 model and it seized up the second time he rode it. I like my two strokes but I am pretty chunky and can see the benefits a four stroke offers but once you are used to the rattly ass 2 strokes nothing seems as fun

Quote: Originally Posted by HTURBO [View Post] You'll be looking back once you have to shim the valves. lol Same with any 4 stroke banger/mx bike. I should have gone the trail version. But the mx series are so much fun. lol wont be for a long time, sorry to say it, unlike the hondas! Some original photos have not been recovered yet.

Myself and two mates all invested in 3 brand new YZ450f's I was the smart one and got the blue :P This was me stranded half way up one of the "walls" @ wombat. Anyone who's been to Wombat, I'm sure you know how it feels when your halfway up and you run out of momentum and she stalls. This is my poor mate who come flying around a corner and thought this little rut was shallower than he expected. $200 later after fixing the kick start which had seized, lucky he didn't blow it up. 4 of the 6 bikes on the day. 3; '10 yz450f's '06 KTM 250sx '07 YZ250f '09 CR450f Was the most fun I think I ever had. Apart from getting lost for about 3 hours and nearly running out of fuel. So so so scary. As for the debate between 2 stroke and 4 stroke; For the bush I think 4 stroke is awesome as the power is there instantly at low speed and low rpm, where as I find on a two stroke you gotta rev the **** out of it to get going, the guy who came with us on the KTM was getting sick of the low speeds in and out of trees etc. Nevertheless I still wouldn't mind a 2 stroke for my next bike as the 450 is difficult to maintain, and the 2 stroke is just so much more fun to tear up a track on. My 2cents. Some original photos have not been recovered yet.

Yeah I used to go to Wombat all the time, but I was one of those guys making those ruts so deep with my Patrol!

My bike. Bought brand new YZ250F '09 US Spec. Only started riding this year in April. Bought a new TTR230 which I outgrew quickly.

What's 'the difference between an aus and us spec?

This thread makes me want to go riding. Maybe because I love the violent as hell power delivery of a turbo 6 is why I like two strokes, 4 strokes are like the v8 version Turbo 6 FTW

Quote: Originally Posted by jbonez [View Post] This thread makes me want to go riding. Maybe because I love the violent as hell power delivery of a turbo 6 is why I like two strokes, 4 strokes are like the v8 version Turbo 6 FTW I thought I was the only person who thought that to myself. Nice one. Now I want a two stroke even moarrrrrrrrr!!!!!! Anyone want a yz450f 2010 model. I've ridden it twice, about 10 hours use. Owes me 14 grand. No joke. Some original photos have not been recovered yet.

Funny how every reckons the 2 strokes go harder. Friend & I had a standing start. He was riding the 2002 CR500R & I was riding the 2005 CRF450R. We were bar to bar all the way. NO difference. Except mine had a head start being a four stroke & quicker off the line plus 50cc less. Work that out. Also when we go riding we would swap bikes. Within 5 minutes I wanted the CRF back. Way more fun. Instant power & allways having to sit on the petrol cap because all it wants to do is mono. Also there's allways grip being a smother/broader power band. Great for the bush & for those nasty rocky hills.

Has he got the cr250 frame with a cr500 engine? You realize are comparing an engine that started in 84 and finished in 98.. Some of them didn't even use power valves so even tho they are a wicked engine they are old tech. I have let four stroke riders ride my yz250 before and wanted to get off because it was too snappy and wore them out too quick, when I hop on the tractors they are still powerfull as hell but I prefer bulk power in the mid to top end rather then smooth power all the way through.

i had a 08 crf450r just got rid of it. apart from the valves there a good bike, the valves were stuffed when i bought it (realised after about 15 hours) i did the stainless conversion but then sold it after 5 hours lol, i bought the valves & piston off ebay ending up costing $700

No he has a Honda CR500R 2002 model. There's is a difference between your standard four-stroke & a four-stroke race bike. The CRF450R goes way harder than the CRF450X. It rev's out harder with more kilo wasps. I've had many two-strokes. But once I brought the CRF450R it was way more fun. It's funny. Here's me powering up the hills in the bush & my mates on the two-strokes are spinning all the way with there legs trailing behind. lol 2010 CRF450R efi http://www.youtube.com/watch?v=8gGyG9gT8YQ CRF450R vs CR500R Allways there CRF450R would win of the start line but the CR500R had the top end & would win with the speed. That's why in competition they went with the 4-strokes. Better response & quicker off the line. Some original photos have not been recovered yet.

Oh yeah it was 02 when they stopped hey, Alot of the power on those bikes in unusable they are monsters I have an 11oz flywheel weight on my yz250 & a 52 tooth rear sprocket, its not as violent and better suited for the tight stuff & hills, it just smoothed out the initial band hit but you don't notice any top end loss & takes less then an hour to change them but I never have. Its a good idea as MX 2 strokes are a bit full on if trails is all you ride.

Quote: Originally Posted by gmh-086 [View Post] What's 'the difference between an aus and us spec? Aus is YZ250F(X) USA is YZ250F(Y) The only difference is the exhaust due to emission laws etc between the countries. The US spec is a bit louder, but engine etc all the same.

Since the four strokes are taking over I bought a flogged out YZ 250 two stroke to rebuild, still love the noise and power curve, should be good.

Love the 2 wheels but nothing can convert me from my 4 wheels!!! Raptor 700r minor mods and still manages to throw 130kg off the back of it into a tree! Ouch!