Harley sportster question?

Question

Does anybody know what the largest engine I can fit into a Harley sportster frame is?

Answer 1

how about 90 cubic inches/ 1474 cc's.  This is the biggest off the shelf kit I've seen, but I've seen bigger hand built engines on the drag strip.

http://www.mt-llc.com/rpStore/product_in...

Answer 2

depends on if you want to change out the gas tank,,,, you can put a peanut tank on it and go bigger motor.

Answer 3

1250cc