http://www.1250kits.com/

Roughly 23.7 more cubic inches over an 883 and 4.2 more cubic inches over a 1200. Pretty sweet making the sportster roughly 77.6 cubic inches by bolting on a set of jugs and cylinders. If my math is correct!

 

Friggin sweet! Can't wait til they are available for purchase! I've got my Hammer savings fund started but still have a long way to go. Hope to be in the ball park by the time they release this kit.

* Spoke too soon before visiting the link....*

 

rite on!

 

how do you think they'll work with ported heads? was the 120 hp bike ported?

 

http://www.hammerperf.com/xlbigborekits.shtml#1275kits

 

Damnit, I missed it by 2 months..

 

Yeah, I got the 90 HP 1250 kit. Head work and 560 cams. I'm not disappointed. I don't need no stinking 1275. LOL

 

I'm liking the price of the 1250 kit. Need to check if there is one for an 03 883.

 

Hammer is selling off the 1250 kits at a discount. If that works for you go for it. I am looking real hard at the 1275 kit just because it's the latest and the greatest.
I own a 2009 Fatboy, but want a sporty to replace a couple jap bikes I own.
Any advice on best year sporty for the conversion?

 

I don't think there's a bad year for evo sportsters, and the conversion wouldn't be better or worse for any of them either. Get 2004+ for rubber mount, and 2007+ for fuel injection.