taco eater :
Mopeds by Mark from Roseville, MN United States
Over the last 3 or 4 years I've bought several of these pipes. Old and new style that doesn't hang as low and I'd have said 5 stars for sound, speed, quality, finish, etc. but the most recent one was a little disappointing. The welds weren't ground off and it looks a little sloppy compared to others. I've been fixing and modifying QTs for a group of about 15 friends and thats why I've seen the quality change. Price hasn't changed though so maybe that's the factor...
I've also had the MLM Next Level and Circuit pipes and the build quality was good but I haven't seen from a current batch to say if their quality slipped too.
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will this fit a 80' QT50
July 9, 2022
taco eater :
Adam Rogers from versailles, KY United States
Some say it fits fine, others say it doesn't fit at all.!? how would I know if my 80' QT is "compatible?
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1976 Yamaha Qt50
September 30, 2020
taco eater :
christopher garcia from springfield, MA United States
Bolted right up to my 76 qt50 without no issues perfect condition sounds amazing defiently notice a speed increase defiently would buy again highly reccomend
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Works as advertised
February 21, 2020
taco eater :
Darren B from Buckley, WA United States
Uni filter, +4 jet, and this pipe and my QT went from a max speed of 24mph to 34mph+
Bolts right up.
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No where near to fitting
April 11, 2019
taco eater :
Jamie Isaacs from Auckland, Auckland New Zealand
As a working exhaust the thing is great, fitting it to the qt50 terrible, engine mounts are nowhere near, pretty much had to grind/file them all the way to the edge and still had to put massive upward pressure to get it to fit.
Great pipe, quality changing? 
will this fit a 80' QT50 
1976 Yamaha Qt50