nibbiCarburetor PWK28mm,fit 200cc—250cc Motorcycle Engine with Carb Jets for Dirt Bike Mini Bike Pit Bike GY6 ATV

I don't normally leave reviews, but this will save some of you bunch effort,time and $$. I recently purchased a knock off pwk 38carb and it had blank Jets,plastic idle screw and a needle with no marks either. Spare Jets and needles were blank also. The cost was $40,so you get what you pay for. After several upgrades, real Jets,real idle screw, real needle, cleaned out mfg debris,..it ran ok but was hard to start and erratic idle once tuned!! Tracked down to a cracked cheaply made choke assembly,which they sent a replacement for fast. So it now idles and ran good now,especially for $40 +20 more for upgrades. It still was very lean in the midrange,even with a huge 180main,and the needle clip on the lowest notch!! I would pop and blow 2 ft flames out the tailpipe each time it decelerated..that wasn't normalI upgraded to the niici carb to just try it because it had the extra adjustable main jet(which my own 1997 cr250 carb had an electric solenoid version of stock) ..I can tell you theres a huge and immediate nite and day difference in the knock off pwk 38 and the nicci. Huge improvement with instant throttle response..idle mixture and speed set in 30 seconds ,,not 30min!!! Only top materials like red billet throttle slide cap and bowl drain ,,the slide was much tighter tolerance,,the idle was much lower and stable. Would buy again in an instant,,well worth the money. If you know how to tune dirt Bike carbs , had a beater of bike worth only $400,the $40 pwk knockoff will work fine.. but if your want a top quality carb that's easy to tune.,,the nicci is a bargain,,,at half the price of a 20yr old pwk38 selling for on fleabay

Was curious about it at first but it is a huge noticeable difference then the old Mikuni carb that’s a pain to jet and get it to run right this one straight out of the box blew my mind away didn’t have to do any adjustments would totally recommend for a 2 stroke very happy with it

*Price: Decent*Machining Quality: Surprisingly good*Jet Option: Good 2 or 3 options.*Needle: Good taper and adjustments*Spring tension: Exceptional*INSTRUCTIONS: LACKING, needs more information. Had to figure it out.*Rating: 4.5 stars*2x 34mm PWK on a Suzuki bandit 1200 using a 1 carb into 2 manifold port setup.34mm on these is set to be good for 2something-350cc I think... using the simple logic then 1200cc/4 = 300 is right up the flow chart for this carb I figured it would work as the cylinders sharing a carb are on opposite strokes essentially creating 4 separate 300cc.-Carbs are on the bike, it too a while to figure out it runs good and it's ridiculously responsive compared to the original 4 carb module.The Needle comes on the second notch from the top which equals a pretty lean mixture even with the large jets. This causes Rev hang, erratic throttle response and backfiring.*Video is first start no adjustments made yet except idle screws, running on choke*******Bike now dialed in on:*2nd slot from bottom on the needle. (Inside carb)*2 turns on the idle screw. (Left side of carb, big screw)*3 turns out on the air screw (left side of carb, Recessed screw laying horizontal)*5 turns out on the Negative pressure tube. (On top of carb on the inlet side has a hose from the float bowl up to it)***FOR THE COST, IT'S HARD TO BEAT***

I recommend this product. The difference compared to the stock carburetor is night and day, I was on second gear rolling about 10mph and when I opened the throttle all the way the bike jumped and the front wheel lifted of the ground(out of the box not tuned to the bike). The only downside is that it takes some time to install. You will also need to get a pivoting manifold flange (if installing on a 50-140cc engine) to make the angle less awkward.

Poor quality, horrible delivery took about a month to deliver and then it was just not a good carburetor. Very disappointing.