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1.
The best engine for a dirt bike, the distribution of the power is great and easy to use........unless your retarded and give a full twist of the throttle in first gear or while driving slowly (thus flipping over backwards).

You can easily tell the difference between a 2 stroke bike and a 4 stroke:

1. Two strokes have a huge pipe (expansion chamber) leading out of the engine and into the silencer.
2. two strokes sounds more like humming, while 4 strokes sound like someone shitting their pants.
3. Two stroke bikes are smaller
4. Two stroke bikes cost less to fix, and unless your stupid you can do the work yourself.
5. Overall just buy a 2 stroke bike!
4 stroke rider: lets race
Two stroke rider: ok

**go**

4 stroke rider dies from inhaling the blue haze from 2 stroke rider's bike being in front the whole time.
by KX250 November 19, 2005
 
2.
"two-stroke" is the term used for a male who does not need an exceeding level of sexual stimulation to reach climax. The origin of the phrase "two-stroke" comes from mechanics, but has been cleverly adapted to mean literally someone who only needs two strokes of the penis and they're done. The most common usage of the phrase is as a nickname.
1) Come on, two-stroke, we're goin for a drink.
2) Yeah, we all know you're a right two-stroke.
3) Well rack me off and call me two-stroke, that was quick!
by Mr Curt September 21, 2006