taco eater :
Ty Bernd from Richland, WA United States
Was a bit too large to fit into my exhaust port, which is weird because the next level stock with the same specs didn’t give me any trouble. I got it to stay in place but the nut is pretty close to the tip. I’d dremel it but it won’t be equal all around so I don’t really know what to do, takes off like a rocket though at 25 and gets me to 35 for a nice gain of top end. I’d recommend.
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Nowhere for rear fender stay to attach.
April 30, 2022
taco eater :
Chaz from NY United States
This pipe will leak around the connection to the head without a gasket, had to hand-cut exhaust gasket sheet material as OEM copper gasket is no use.
This is advertised as direct fitment for Honda NU50 however the rear fender stay attaches to the OEM pipe and this pipe has no provisions for it. I slid a piece of fiberglass mat between the pipe and the stay to keep it from scratching the coating on the pipe but what am I supposed to do? Cut the stay off? Grind and weld a tab onto a brand new coated pipe? DERP!
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not quite bolt and go on stock cylinder
April 2, 2020
taco eater :
Joey Poole from Washington, DC United States
the flange is a bit too large to mate with the stock cylinder. however with a quick beveling courtesy of a dremel, it fit pretty well.
bit of low end performance lost for nice gains around 10-15 mph up until the 30s
edit: revisiting this to say this pipe gives mondo performance out of the stock cylinder. it easily pings my 35 mph speedo. I'm guessing high 30s or touching 40 with stock jug, carb, jetting, bx31 belt, and this pipe.
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Not bolt and go
May 21, 2018
taco eater :
Gene Visco from Burlington, MA United States
This was not as advertised. There was much fabrication involved in getting this to mount on my NU50. I returned it. Very disappointed.
EDIT TREATS : This is a bolt on pipe for NU50, contact us if you are having difficulties and to make sure you have the right model bike/pipe combo. Thanks!
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requires a bit of work to tune with stock set up
May 11, 2018
taco eater :
J.R.Rutherford from COLUMBUS, OH United States
To take full advantage of this pipe with stock cylinder, you really need to run the GY6 clutch, Malossi red springs and GY6 yellow contra spring. Then tune your variator - somewhere around 36-39 grams. You may want to raise your exhaust port a couple mm and shave your head to run without a head gasket. Basically anything to keep the rpms up so the pipe will hit. Of course, don't forget to up jet. You can run it with the bx31 but that will probably keep the rpms lower than stock belt.
Nu50 ripper 
Nowhere for rear fender stay to attach. 
not quite bolt and go on stock cylinder 
Not bolt and go