So why a 1250 kit?
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Road Captain
Joined: May 2015
Posts: 510
Likes: 83
From: SW Virginia
So why a 1250 kit?
Over and over 1250 kit here, 1250 kit there...
But why 1250? Why is that the magic number? Does the 50cc difference from a 1200 make any difference?
Just curious as I am planning to do a sportster build in the near future.
But why 1250? Why is that the magic number? Does the 50cc difference from a 1200 make any difference?
Just curious as I am planning to do a sportster build in the near future.
Sorry
I'll move along!Actually, looking into all this as well. I was pondering it during my rebuild. But think I'm gonna keep my ole 96 and 883.
Advanced
Joined: Mar 2012
Posts: 58
Likes: 0
From: Land O Lakes, FL
I am by no means an expert on this subject, but I believe the benefit of the 1250 kits come from the increased compression. I think 1250, just happens to be the biggest displacement you can go without a case overbore.
1250cc is as large as you can go without having to bore the lower cases (where the cylinders attach.)
You can simply swap the cylinders and pistons up to 1250cc.
You can bore a sportster to over 1400cc, but it takes a lot more work.
It's true that the 1250 kits from Hammer Performance and NHRS have higher compression than the 1200 kit from HD, but that has nothing to do with the displacement. It's just something HD decided not to do.
You can simply swap the cylinders and pistons up to 1250cc.
You can bore a sportster to over 1400cc, but it takes a lot more work.
It's true that the 1250 kits from Hammer Performance and NHRS have higher compression than the 1200 kit from HD, but that has nothing to do with the displacement. It's just something HD decided not to do.
Tourer
Joined: May 2013
Posts: 466
Likes: 1
From: wisconsin
What's unmentioned. Is customer service after the sale of a 1250 kit from hammer.
Any question I have engine related can be answered with a email or a phone call.
Another thing not mentioned is the pure joy of twisting the throttle after conversion.
It's why these kits are so popular
Any question I have engine related can be answered with a email or a phone call.
Another thing not mentioned is the pure joy of twisting the throttle after conversion.
It's why these kits are so popular
Ultimate HDF Member
Joined: Jul 2008
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From: SW Ohio
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Road Warrior
Joined: May 2010
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From: Northern Colorado
Search Madnss on here. You'll see the answer. He's an excellent rider and his bike has always been set up right to make fast passes, even before the stretched swinger. He's got probably hundreds of sport bike kills under his belt Good rider, solid combo up against a relative newb on a 600 rocket.. it's HD wins all day. Match rider skill however and it gets a little ugly for the V-Twin camp. Light weight, lots of power and aerodynamics are hard to beat.
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Ultimate HDF Member
Joined: Jul 2008
Posts: 6,502
Likes: 97
From: SW Ohio
Search Madnss on here. You'll see the answer. He's an excellent rider and his bike has always been set up right to make fast passes, even before the stretched swinger. He's got probably hundreds of sport bike kills under his belt Good rider, solid combo up against a relative newb on a 600 rocket.. it's HD wins all day. Match rider skill however and it gets a little ugly for the V-Twin camp. Light weight, lots of power and aerodynamics are hard to beat.
Seasoned HDF Member
Joined: Feb 2007
Posts: 5,067
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From: Edmonton Alberta Canada
I think the point is to upgrade to 1250 from an 883, I don't think many people upgrade to 1250 from a 1200.