My Personal Preference and Why

by Tom
(England)

I've had my fair share/goes on different motocross bikes, a following to name a few...


Suzuki DRZ 400, Honda's CR-F, Honda CR 500, Kawasaki KX 85 (when i was a kid), Yamaha YZ 125 and Suzuki RM 250, (list is endless).

As mentioned, I’ve tried 2 stroke and 4 stroke bikes and my preference is 2 strokes. Why? Well there is a number of reasons!

PROS (2 Strokes)

(Far nippier).
Even though the new 4's are up and coming they will never match the power to weight ratio of a 2 stroke, purely because the engine re-evaluates twice as fast. You never get the same buzz. (From my own experience)

(Cheaper to buy/maintain)
2 strokes are far less expensive to buy due to simplicity. They are also far easier to maintain for the same reason. YES, we know 4 strokes are longer lasting, but seriously... as soon as you take it to the tracks and drop it, was it worth the extra expense if it’s just going to become damaged?

(Easier to control)
The plain fact is that they are lighter which makes them easier to move in the air, mainly for doing tricks.

CONS (2 stroke)
2 strokes are not without their cons. But they are far less compared to 4 strokes.

(Oil Costs)
4 stroke riders are always saying "oh bla bla bla, you waist a fair amount of money on oil". My answer to that is "you waist so much money on a 4 stroke which cant take a beating like a light 2 stroke".

PROS (4 strokes)

(Smoother ride for a newbie at motocross)
4 strokes are good if you're just starting out and just getting the hang of riding. 0 revs to 14'000 or what ever the max is, is far smoother and slower compared to a beastly 2 stroke which has a huge power band increment depending on the make of 2 stroke (normally near the top end of revs).

(Less emissions)
I don't know this for a fact and "apparently" it's not been scientifically proven. They say due to the fact that oil is partly burnt in the procedure and re-burnt as the piston can't always fully eject the emissions that it's more harmful. BUT the new 2 strokes are far better with emissions now. Older 2 strokes were bad yes, but who rides them :P ?

CONS (4 stroke)

(More expensive)
Generally more expensive to maintain and buy. It's been proven and well known that because so much effort has been put into shrinking the 4stroke engines down, when a problem occurs it normally leads on to creating more problems due to the complicated build. This leads to more expense.

(Slower/sluggish)
The fact that the pistons need 4 vertical movements to produce 1 full cycle/revolution in the cylinder instead of 2 for the 2 stroke the power of a 2stroke is double that of a four. People say the gap is becoming less and less. Give it 50 years and it might be a bit closer...

Everyone has their own view on the two engines but I say, if the bike is used primarily for road use get a four stroke, if it's off-road get two. Don’t mix and match.

I hope I haven’t bored you but I just like to pass on what I’ve been told/what I know from experience.

Enjoy whatever bike you have. We are all on bikes for the same reasons, just different views to why we have them.

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May 11, 2010
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Question
by: logan

What are your preferences on the kx 450 monster edition, with the fuel injection?

Jun 25, 2009
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2-strokes Last Longer & are MUCH Cheaper to Rebuild
by: jeff flick

Tom, I strongly disagree with the statement you made in paragraph five. You quoted "Yes we know 4-strokes are longer lasting". Excuse me Tom, "4-strokes are NOT longer lasting!" Unless you're talking about the older HONDA XR-600 & 650. Yes they were pretty durable 4-strokes, however just because the piston & rings lasted a good bit longer than any of the 2-strokes of that time. "About 1982 to 1990" doesn't necessarily mean they were longer lasting. Us 2-stroke riders just simply spent about $100.00 back then for a new piston & rings, and that included having it done at the local shop! I preferred to just do the job myself.

Now if we're speaking of the newer high revving 4-strokes, you know the ones from 1998 to 2009. I would say somebody would have to be crazy or just not too experienced when it comes to 2-strokes or hasn't owned a newer high-revving 4-stroke & had to do a top-end rebuild after about 30 to 40 hours on the bike, let alone a full rebuild on these money wasting 4-strokes! Go ahead and check out the price to totally rebuild a KX-450f or a CRf250r & then tell me how long lasting the 4-strokes are.

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