. S$S and Supertrapp......
Big bore kit
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Stage I
Joined: Mar 2021
Posts: 1
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From: TX
Big bore kit
Yea i jist finished puting a hammer 1250 big bore kit on my 99 harley 883 and now im about to upgrade on my carberator and exhaust and i was jist wondering if anyone could tell me what the best match would be to get the most out of that particular hammer kit thanxs in advance
Seasoned HDF Member
Joined: Dec 2010
Posts: 6,850
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From: Florida
Carb wise: whatever your flavor is. A lot of guys juice up their cv's. A lot of guys like mikunis. We also have a lot of s&s loyalists like myself that prefer a super e. With a 1250 kit you'll be fine with a cv
Exhaust: buy a good 2-1 with adequate back pressure. For example a supertrapp would probably be one of the best options. I also like thunderheaders
Exhaust: buy a good 2-1 with adequate back pressure. For example a supertrapp would probably be one of the best options. I also like thunderheaders
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,082
Likes: 2,159
From: Ohio
A 2-1 clears the spent gases on the non firing pipe just allowing the exhaust to efficient, carbs are personal preference. A CV with some parts from CV performance can supply 100 hp, Mikuni's have the better throttle response, S&S is a old school hotrod carb, they all get the job done but comes down to proper tuning.
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,082
Likes: 2,159
From: Ohio
Yeah, just a personal choice but had to rattle your cage.
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Seasoned HDF Member
Joined: Mar 2010
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From: Poolville
Thank you.. It's a good thing that we are currently in Lent, this way I can use that as an excuse to let you slide... Brother..... 
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Grand HDF Member
Joined: Nov 2009
Posts: 4,315
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From: Tampa
Do NOT waste money on a carb. That CV40 is good to 100hp and with your 883 heads you'll never get close to that. Just jet it and you'll be good.
For the exhaust, I remember the Patriot Defender pipes being good for the Sportster engine.
For the exhaust, I remember the Patriot Defender pipes being good for the Sportster engine.
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,168
Likes: 7,676
From: Poolville
I don't believe that anybody would put a hammer 1250 kit in with out doing any headwork.. Most of their builds are high rpm, that's where they make they're real power.. What did Hammer Performance recommend?