help i need to know what bike this is

i am looking at a 1980 yamaha xj 650???? as i am told it is but this bike is a four cylinder chain drivien machine :?: i dont know, the guy is saying that it is a maxim but all the ones i find online are shafties? the only option i can think is the xj650 special? i need some help please!

 

Are you sure its not a 550?

 

It only has one brake disc on the front its a 550 seca.

 

Or maybe an XS. Wasn't the XS chain, and the XJ shaft, in early years? Get the serial numbers off it. Off the frame tag preferably, as the motor may have been changed. Check both to see if they match.

 

the owner claims its a 650 maaxim lol the xs was chain drive but were twins, both me and my brother were thinking the same as u maybe 550 seca thanks for the input 8)

 

I think, don't quote me on this, that the 650 seca's were chain driven as well. The style of the tank is a seca tank, same one I have on my bike. if you look at the front of the cylinder there should be a marking saying how many cubic centimeters it is.

 

Definitely looks like it's a 550 - chain final drive, 550 instrument block (with two guages at top), and those aren't 650 wheels either. Maybe it's had a 650 top end dropped on, hence the capacity claim.

Nige W

 

Yea after looking into it more, I was wrong. I would say it's a 550 too. the tank looks too short to be a 650 also the passenger pegs look like a 550.

Here is a sideshot of a 650.

 

XJ550R Seca for sure. 81-83 model.

 

Very confusing. The wheels, side cover, and rear fender all say XS Special, 1980 or older. But if it were a 650 it would be a twin. and an XS11 would be shaft, right? I dunno.........

 

Found in my similar post. Check the vin and this post

http://www.xjbikes.com/Forums/viewtopic/t=14577.html

 

XJ550 seca.

Dave Fox

 

yep, didnt make a chain drive 4 cyl xs, nor a chain drive xj besides the 550, and thats a seca tank, so 550 seca

done and done

 

550 Seca, no doubt. No sidecovers, different exhaust, not the factory fairing though; but it IS a 550 Seca beyond doubt.



The 650 Seca was shaft-driven, as were the 750 and 900 Secas.

The 400/500/550/600 series were the only chain driven '80s XJs.