KIPA Carburetor For Mikuni HSR42 HSR 42mm Fit Evo Evolution Twin Cam Glide Dyna Super Wide Lower Rider Disc Glide Fatboy Heritage Softail Night Train Road King

Have been dealing with a carb cough with my CV40 on my 06' Sportster 883 (stage 1) for months now. Troubleshooting with no success from jetting and intake seals to coils and ignition modules. Had read over and over that upgrading to Mikuni 42 or S&S carbs solved the issue and finally pulled the trigger. I bought the Kipa HSR at 1/3 the price of a genuine Mikuni and am so happy I went with the Kipa! Great product, great finish, and best of all... unbelievable performance and absolutely ZERO carb coughs! Throttle response is night and day from the CV, and haven't had it cough once. Would highly recommend buying a name brand Mikuni rebuild kit for the carb before installing to ensure all seals and o-rings are in good condition correct size, as well as correctly sized and labeled pilot and main jets. I left the needle jet and accelerator pump as-is and they work just fine for me with my application. Will be buying again and again for any V-twin application I have down the road. Wonderful product!

I had an OEM Mikuni HSR42 but it got clogged up with gas tank sealer (long sad story). Anyway, I could never get this carb jetted properly after trying for weeks, I'm retired and have the time. I'm guessing it has slightly different size orifices than a genuine Mikuni. I have complete sets of pilot jets, main jets, jet needles and even air jets but I couldn't get this carb to run correctly just off idle in any configuration. I asked the seller what size jets were installed but never got an answer. Suspecting it was just the carb I ordered a genuine Mikuni HSR42, installed it and it works perfectly, no jetting needed. You get what you pay for, but something is different about this carb as I proved. Not recommended, buy an OEM Mikuni would be my advice. Since it is now used due to testing I'm wondering if I can get a refund. I'll see....

It's a good carb. Fits my 04 sportster even though it's not listed. Make sure you open it up and check the float hight. I'm using the 170 main jet, 45 pilot, needle on the 5th notch (highest setting) and 2 turns out on the mixture screw.

I really needed a new carburator for my Harley-Davidson fxr and figured why not give it a shot. Fit and finish look exactly like mikuni. Super easy adjustments. Works better than the CV I had on there. Doesn't leak at all and starts every time. Great budget option

even though it looks polished, it isn't, just the dullness of cheap casting, it will never polish like one would think. the casting is a poor grade unlike the OEM. if you have trouble fitting the harley cables, be extremely careful as the cable guide will snap off in a heart beat, safer to file the cable ends. i had to fix that issue on the get-go. the fit is good on the sportster and i had no issues starting it up, but initially you will have a long crank to get fuel every where it needs to go. the jetting was not an issue and it runs pretty good. the pilot is in ball park so no issue there. i do have issue with hot idle fluctuation but as one poster mentioned, he had sticking slide in the beginning and it went away, hoping for the same. it does have a distinctive stronger idle over the cv carb. the throttle response is very good and will do a high gear roll on without stumble. for the price, it is a good deal. i will install a MPG kit in it that mikuni sells at a later date. one thing to note is that it is louder in operation than the cv with a lot of clatter. FOLLOW UP: the stock carb was dropping mpg from 46>48 mpg to low 30' . i had replace some parts which were supposedly OEM and did raise the mpg to 38, but the parts were probably knock-off since mpg did not go to normal, in particular the carb fuel inlet needle/seat which was set several times according to the FSM. anyway, rebuilding it was the cost of the KIP so i rolled the dice. this card knocked down 52 mpg. i will have to make an adjustment to the main jet needle to richen the 1/8 throttle position since i am getting a lean cough back, past that, runs like a banshe, wayyyyyy better than the stock keihin cv40.

Works great and seemingly fairly well made. Be aware the bowl had some aluminum junk in it out of the box. Do yourself a favor and clean it out well before running. Huge issue is the bowl plug, I was pulling it out to replace a jet and it immediately stripped. Lefty went tighty. I assume there was some residual aluminum from machining in the threads. Turned both the bowl and the plug into a paperweight. Ordered a genuine one to replace it.

I have a 2003 sportster 1200 and have been going through a tough time getting it to run right after sitting from the previous owner. It would idle but would not run correctly under load. Tons of research and replacing ignition module,coil,p!ugs,wires,rebuilt carburetor 3 x , went to gravity fed petcock, still no luck. I finally just gave this a shot after reading the positive reviews and saving about 160.00. Bolted it on and end of problem. I have a real mikuni on my softail and honestly can't see a difference in carbs.Actually this one is more polished . hope this helps someone having the issues I dealt with. Bike is running great.Quality from China is definitely going up.

Installed just fine as soon as I turned it on though it starts leaking like a sieve from the overflow I bought this cause I didn't want to rebuild carbs but apparently I have to poull the float bowl cause it won't shut not not happy with it