From what I've looked at so far, all I need to do is pretty much take off my 883 jugs, knock the pin out of the piston...install the 1200 piston/rings and whatnot, Then put on the 1200 jugs and slap my heads back on it....upgrade to a heavier clutch spring. If I get the Power Vision, will it have the necessary tools to upgrade my computer to the 1200 specs. I've seen a 1200 kit on EBay for like $550, are these OK to use or should I use the Harley one? I have a 2013 Superlow 883 by the way, is there anything special I'll need to worry about?

Also, Would I need to use a Different Air Cleaner? The bike has Vance and Hines Straight Shot slip on Mufflers, are these going to be enough flow?

 

I'll be interested in this also. I would like to install the NHRS 1250 Kit. i have the tools, bike lift table and time this winter. But! would like to hear from those who have done it.

 

Member Chris Owens did a very nice write up on his conversion a few months back.
https://www.hdforums.com/forum/sport...0-install.html

 

There is more to this than meets the eye! To convert to 1200 (or the popular 1250) requires pistons that are suitable for use with your 883 heads. Personally I would use a 1250 kit, not least because they are available from reputable shops who provide good quality parts, properly engineered, plus great aftermarket service.

There are several excellent threads in here on the 1250 conversion, in addition to the one Guzzi gives, which between them spell out all the details. Well worth taking time to read!

 

I used the NRHS 1250 Axtell kit on my '06 with no other information than the factory SM and it took about 6 hours start to finish. Everything was in the SM and there were no surprises, just took my time and followed the book. If I hadn't stopped to tinker with other things along the way I would have been done with the conversion even quicker. I did have NRHS gap the rings and pre-install the pistons in the cylinders, I think they charged me an extra $5 to do it and that made the install an even simpler process; I also got the upgraded gaskets as well.

I never should have sold that '06, the 1250 kit turned it in to a real beastie Took this image right after the install and my first ride to seat the rings...

 

Yes it sounds easy, but you'll also need to have a little mechanical know-how, proper tools, ample time/money and some ingenuity (doesn't hurt). These kits are pretty straight forward, but understanding how the tools and parts function helps aid the project toward successful outcome. Probably one of the easiest methods to learn your bike and gain self-satisfaction. Also recommend buying from a reputable vendor vs. eBay...better direct communications if/when you have problems (cuts out the middle-man). Good luck!

 

The aftermarket 1250 kits will give you more bang for the buck.
The most popular are NRHS and Hammer Performance and both are reputable.
The stock 2004 and later Sporty uses what's known as the "Big Fin" jugs for better cooling and heat dissipation. These are not available from NRHS but are from Hammer.

You can see the difference at the Hammer Performance site if you scroll down a little bit.

 

As was said, buy from Hammer or NHRS and get the after sale service that comes with their sale.

Also, make sure you get the first MAP from Hammer or NHRS. The higher compression requires different timing.

 

Pistons, cylinders, heads, transmission parts.

 

not hard... who are these ebay people and what are the selling? you dig? the write up posted above is great. iceman brought good reason too. use the google, make some calls, talk to shops, get a good understanding. i asked the same question some years ago. came to a completely different conclusion but, knowing what needed to be done vs what was optional/completely unnecessary is important.... shady folks/dealers out there.

get a pen and paper and do the diligence.