Is it worth doing the coversion as my bike is basically brand new?? Does it make it easier to cruise on highway with extra cc's..

I have the Revolution Performance 1250 kit in my Iron883 using the stock heads. The performance difference isn't huge, in particular if you swap the front cog over to the stock 1200. I'm about to put Andrews N4 cams in to it to see if that gives it a bit more off the mark power.

When doing this you have to compare apples with apples, from what i have read a few guys on here have this conversion and say there is a huge difference, maybe iron1250 has a different tune up (too rich no enough timing) causing a loss in power? just a guess???, as my 883 (proper tune) keeps up with the 1200's (hd tune) this is where the differences are...the TUNE! just something to keep in mind.....
T1

I'm running the NRHS 1250 kit with Andrews Cams and am reasonably confident that it would put some of the bigger Vtwins to shame......lol

She goes extremely well and there was a MASSIVE difference in comparison to the 883; as an example I rode a mates Iron home for him a few weeks back (still getting his license) and it was no where near as torquey as my bike, responsiveness was significantly less and just felt slow in comparison!!

T1 is right on the money, very difficult to compare apples to apples when there are so many other factors to consider (tuning, tuner, air cleaner, exhaust, etc)

The official HD kit seems pretty good value, as it comes with upgraded heads. (The guys at Harley Heaven can do a good deal if you email Sam ) Add cams to that,and the thing will fly. I rode my mates 883 with a 1200 kit,and flat slide carby (pre- efi),and that thing had way more torque than my Iron, but seemed less willing to rev out freely. And, yes, it was properly tuned, it just kinda felt more hefty, tho not really as sweet as my bike

Birch is right there are two kits available from the H-D via Screaming Eagle part No. 30003-10 which is street legal and gets you heads, cylinders (non-highlighted ideal for the Iron883), pistons, rings, air cleaner, gaskets and needs the ECM unit to remap the ignition, this is a separate purchase. The other is part No. 29836-10 and this gets you the cylinders (non-highlighted ideal for the Iron883), pistons, rings, cams, clutch spring, and the Pro Super Tuner. This can be used with stock heads, pushrods and lifters it’s a straight bolt in mod.

Buying in Australia will insure that you get the correct Pro Super Tuner unit for this country as they lock the units via vin number (trap for the unwary). The kicker is that the second kit is for track use only, though I’m sure that you can persuade your local friendly dealer to sell you one and install it.

Don’t get me wrong with my previous comments, the change in performance it is noticeable it is just not going to give you a bike that is a drag strip rocket, its usable power. If you want big power you will need to look at some of the full on Sporty conversions that chew up serious coin. Also having changed over my front sprocket to the 1200 stock size one has taken the ‘off the start’ sting away that the standard 883’s have. You can see a discussion thread on this topic elsewhere on the Forum, I note that 883n Harley Convert has retained the stock 883 sprocket and has gone to the next step I plan to take with the Andrews N4 Cams. In conjunction with the 1250 kit I run stock drilled exhaust, S & S Air Cleaner and a remapped ignition, Screaming Eagle plugs and leads.

Having done the conversion to two of my three Sporties (the 3rd was a 1200 when I got it) to date, I would do it again if I was starting with a 883.

This is something I've been looking at & weighing up the different options.

Basic NRHS 1250 kit around $700 + cams $300 + freight. And that's just with stock 883 heads. Send heads to NRHS for stage 1 work add $550 + freight, stage 2 $850 + freight. Would have to split some purchases here to avoid import tax etc. So upwards of $1100 for basic 1250 kit with cams (stock heads). Or close to $2k with worked heads. Add install + dyno.

SE 1200 kit (#30003-10) $1500 (incl. better flowing 1200 heads) + cams $300. $1800 + install + dyno.

Wouldn't mind the 1250 but with the convenience of the 1200 kit in one local purchase/install I'm leaning towards the latter now?

@Iron1250 unsure what you meant about the super tuner? As far as I know there is the one model 32109-08B? I bought mine from the US on eBay & no probs. It's now locked to my bike's VIN but that was expected.

Slap.

Hmmm
Cannot recall the exact price I was quoted for the SE kit,but I am sure it was way less than $1500. I was also assured that cams were not REALLY necessary, nor was dyno time. At least that is what I was told by HH, as well as an independent Harley workshop. I was told that a map was available to install for the SERT I was gonna put on the bike

Erm
Just checked,and it was $1350 from HH. So not quite as cheap as I recalled, as I was gonna get one on my trip to the Staes for US$995.
All fell thru in the end................

Slap there is another one part No. 41000008B called the Screamin' Eagle Street Performance Kit for street legal performance modifications. I sourced one from the states anyway the local Dealer couldn't get it going and after calls to H-D Australia it appears that it is a US domestic use product locked to use by bikes with US vin numbers. I ended up with part No. 32109-08B then it all worked fine which I used for the first stage of S & S air cleaner and the drilled pipes then the 1250 kit a while later.

One definite advantage if you go for the street legal SE 883-1200 kit (part No. 30003-10) and have it installed by a Dealer warranty is easier to claim if it has a drama. With my current set-up there is very little recourse if there is a serious issue.

I've been doing a little research into doing this since i got my bike, and personally i'd hold off and go the whole 9 yards and get the stage 3 heads roller rockers etc, i dont see the sence in pulling it all off and putting the stock top half back on, my estimates are $3500 (no labour) to go all the way...see how i go mid year with my tax return.....its a big decision really, $3500 on top of my bike will almost get me a new street bob....
T1

 id have to disagree with the negatives on this one , as ive just got a 883 converted to a 1250 nsr kit in it , i have a stockish 883 the missus rides and the 883-1250 i bought , there is a huge diff , these are both 2007 bikes , after getting of the bob i sold with 130hp i dont think there would be much in the 1250 upto about 100kph, just under 80hp, i do no that this 1250 has huge compression as it need a tricky way to start it up , it will never start with one hit of the starter, needs like a doubble hit on the starter

+ 2 - No negatives @ all!

+3 no negatives and i am getting better fuel economy when cruising, mind you i do not have the tank lift done.

Cheers,

Clem

Apologies for going slightly off topic however, quick question for 883n Harley Convert did you still have stock 883 heads on your Iron with the NRHS kit and the Andrews N4 Cams or have you done head work on the valves?

Many thanks Waz. I didn't want to go that road unless I really had too.

Waz you are exactly right with most of the 1250 kits using stock heads the compression goes up to 10:1 or greater it's all to do with the reverse dome pistons.

Thanks for the info as I was curious if you had been able to use your heads un-modified because when I got the Andrews Cams kit it recommends valve mods for N4 Cams and greater but I remembered you are running N4's from your tag line so I thought I would ask. I emailed Gary from Andrews Products in the States and his reply about N4's stated to check the exhaust valve clearance in relation to the piston, which I will do, hopefully there will be enough clearance with the Revolution Performance 1250 kit I'm using.