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MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Tough Call: YZ-250 vs. YZ-450F
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[QUOTE="AlStar250, post: 1154754, member: 69166"] Alot of it has to do with what year bikes we are talking about. For instance, people have all said the 2s "hit" is much harder, but from '03 and up - the YZ250 has had the most 4s-like motor of any of the smokers. It very very broad, can be chugged at low rpm for woods and such, yet comes on nice without the super "pipey" feeling of the traditional 2s. And subsequently, the '04-'05 YZF have a pretty hard hit that will blow up the rear tire alot harder than any YZ. That's what Yamaha has been trying to tune out of the 4s for the '06-'07 models. For the most part, the 4s steers with the front tire, the 2s is a rear-steer vehicle. There are alot of things to look at when deciding and you have to weigh the pros and cons - One thing I could not get over was the amount of cash I had to dump into my '05 RMZ450 to get the motor rebuilt after dropping a valve 10 miles from camp in the middle of Glamis and having to ride it back. I actually didn't realize right away that something was totally wrong, but when the bike quit...well? Total parts and labor was in the neighborhood of $2800 - and I bought my '05 YZ250 for $3200 a year old. For me that a TON of cash for repairs - I'm almost scared to ride it hard - ALMOST! There are things I love about the 4s - Gas mileage - I ride alot in Baja and having the extra mileage and the ability to gas up whenever I find fuel is awesome. I couldn't do it on a 2s, cuz I'd have no where to mix it up. In the sand, the hard pack, anywhere, the 4s goes farther on a tank. There are places I ride that are BLM owned land, and a 4s with a spark arrestor is the only-legal setup allowed. If you ride a bigger track or a place where you have the room to allow for revs and have adequate traction the 4s WILL BE and feel faster. There's an addiction that comes with 11,000 rpm of 50+ hp pull - Things I love about the 2s - Lightweight flickability, no 4s jumps like the smoker. Low maintenance - clean the filter, change tranny fluid every so often and your done - No valves to check or any **** like that - seriously. I've done the motor once - TOP and BOTTOM for less than $400 - that a HUGE difference for me to stay riding. Subsequent top ends are going to be about $200 a pop. Responsiveness - now I can only speak about '03 and up YZ's. They are right now power. Find yourself a gear tall, clutch it - need to clear something you didn't see, a 2s doesn't find you toeing the shifter in hopes of getting the R's up before you get there - on a 2s...clutch it and pull up. Its a matter of style. I personally wouldn't be in a hurry to buy a used 4s - who know how long it will be before you're the one without a bike for 6months saving $3k for a new motor...If you go with the 4s, go new and the 5 valve has proven to last longer than most any other 4s out there [/QUOTE]
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MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Tough Call: YZ-250 vs. YZ-450F
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