The Original KX450! 50 Years later! 

I owned one back in the day. Bought it new as a teenager I thought it was a beast. The tank on that one looks to be metal, but mine was plastic with a bolt coming up through the center of the tank from the backbone of the frame. When I bought it they gave me a box with 1 extra piston, two extra sets of piston rings, and a front sprocket along with a spark plug or two and told me if I raced it I would need these parts. I remember the revs went up fast when you blipped the throttle but seemed like it took it a second or two to return to idle. I am thinking it didn't have a kick stand but may be wrong. After all it has been 50 years.

I'm 60 ill be glad to win for you

My Step Father. Gave me this same bike 1973 450 kx 2 stroke .50 over used it for hill drags . Dropped the bottom out and destroyed the entire motor. This was a beast.

Yeah quick, didn't handle and a bear to start. But what a beauty.

I remember seeing Brad Lackey and later Jimmy Weinert race these bikes at the Trans-AMA races held at Saddleback Park back in the ‘70’s.

Friend owned a Kawaski shop and just happened to have KX450 engine. Lets put it in my Elsinore, what could go wrong??? Woulden't fit without bending and adding a piece to the frame. I did such fantastic tank slappers all over the track, no one dared pass.🤣

i had a 1973, it was more than a handful. way tooo much torque . Riding friends would beg to ride it, that always ended badly for them..

What a cool bike. Too bad he kinda got ripped on it.