Overall this kit is good quality. I did the usual indecisive googling for a few months; reading all of the forums and asking 100 questions. I knew going into this that people had to grind some clearance for the nut to go on. Also the exhaust flange bolt holes need to be drilled out to 8mm. I'm not too crazy about having to grind a brand new component in order to be able to use it but whatever... Assembly wasn't too bad. There really aren't any instructions so you are left to either research youtube videos, read forums, or just give it the old college try and hope you don't fudge it up! I put this kit on my Sachs 505 1A - Prima G3 moped, and it really picked up some torque in the mid range. Top speed increased but the biggest change was how hard it rips in the mid range now! I would recommend this kit but wish they'd fix the mold design so you don't have to grind clearance for a nut.
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powerful lil guy
June 15, 2016
taco eater :
Sam Smith from Madison, CT United States
Bought a used sachs with the D motor, which is perfect for this cylinder by the way, and with a dumb 14 mm bing that is not correctly tuned it hits 35 squalid on the stock pipe. since that pipe overheats and falls off, just get the mlm like im going to someday. If you randomly hear a train beneath you, your pipe fell off, and you must put bondo on it to keep it on there
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Sachs machine
February 23, 2014
taco eater :
Justin King from Rutland, MA United States
Hey guys, just bought this kit to put on a 2 speed sachs 505 2b that I installed a spare D crank in, question I have is will this work with the D crank or do i have to install the B crank I have? Or is it possible to move ports around, extra gaskets or what have you to make the D work? Looks like a super high quality kit that needs little to no cleanup to run… 4 stars cuz I dunno how to crank it :D
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September 10, 2012
taco eater :
deadped ryan from Nashville, TN
Throw a phbg, round bing or amal on your new kit with this intake riser
Opportunities for improvement - overall good 
powerful lil guy