taco eater :
efrain barajas from Morgan Hill, CA United States
Great pipe increased torque and midrange on a stock e50 setup. Sounds amazing (not too loud) and build quality is great. Sounds even better on a 70cc kit.
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the verdict is in....
April 2, 2020
taco eater :
Rex Sheler from Grand Rapids , MI United States
I have 2 za's and an E50 with this pipe. I went through at least 2 other pipes on each bike and landed on this one for all 3. Pre melt and wipe off the clear coat up to the chamber with bottle torch before mounting and avoid the gooey mess on the header later. Great low and midrange. My za50's go to 50 and the E50 Gila goes to 60. Clears pedals on 2 Magnums and the Maxi. And.. it doesn't cost $250.
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better with restrictor
February 15, 2014
taco eater :
Ryan polini from corona, CA United States
i got one of these for my polini race bike for torque on the track. also have one with the baffle which is not really a baffle or restrictor it just shortens the re cone for a faster signal. i ended up side bleeding and rear valved the back(1/8 i.d TO BLEED OFF THE HEAT) get some torque back. pipe does come on alittle harder with out "restrictor" but you lose so much toque and you get a weird flat spot in power before it hits. the one with the "restrictor" is way more responsive and torquey. just cut out 2 inches of header and re weld the baffle straight getting rid of the 1 1/2 inches of stinger to it. you won't notice a loss on the bottom an will gain quite a bit of rpm. to sum it up. the estoril with "restrictor" is a way better all around pipe
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Love this pipe
July 16, 2013
taco eater :
Beau Cameron from Essex Jct, VT United States
50cc kstarred. Love this pipe, has so much high end. Feels like it will never stop revving. Tackles hills like a boss.
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sidebleed = hill powaaaaaah
August 21, 2012
taco eater :
Adam Riggsby from WORCESTER, MA United States
Derestricted, booya. Just sidebleed it and eat hills. With an unported k-star 70cc, milled/resquished k-star head, 2-shoe with kick starts and a 19phbg, it pulls 19x40 on 16in korado wheels all day long and that is with stupid hills in the city.
Estoril Performance pipe 
better with restrictor