taco eater :
Anonymous Person from Blountville, TN United States
16t sprocket will fit ebs050/Senda motors. Put one on my 03 GPR50R. bolt holes are one off as others stated but throw a circlip on the shaft and it works just fine.
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gain some mph
May 18, 2019
taco eater :
Conan Segar from Murrells Inlet, SC United States
both the 12 and 14 bolted right up to multiple mb5s with no issues. 14-42 gearing helps keep up really well 45+ traffic! great quality 1000+ miles on these already.
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Works if you get a new retainer
October 26, 2016
taco eater :
JakeP from Pomona, CA United States
I bought this for a Derbi Start 5 and ran in to the same problem that the MB5 guys did. BUT if you buy a retainer from an XR 80 everything locks up like it should.
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It works, it moped
August 10, 2015
taco eater :
Dirty30 Dillon from CT
Sure, the holes are 90* out. I ground down the clip that came with the sprocket to make recess for the bolts, then bolted the sprocket to the clip. Sure, it's not perfect. But with red locktite my sprockets isn't going to pop off any time soon (or ever maybe).
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13t worked for me.
March 10, 2014
taco eater :
Joe Peg from Portland , OR United States
Worked fine. I needed a different clip but I had one that worked in the garage.
Will fit Derbi/Senda GPR50R 
Works if you get a new retainer