tomos A35 A55 rear sprocket - 42.5mm
tomos A35 & a55 rear sprocket - 42.5mm
 
  $15.50


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rear sprocket for tomos A35 & a55 mopeds. these have a 42.5mm ID. they fit A35 and a55 rear wheels and maybe some others. check before you buy to make sure. don't get stuck with the wrong sprocket

color of sprocket will vary. could be grey, silver, gold or black or pink maybe?

if they don't show up in the drop down menu, that means we are out of stock for a week or so.

we normally carry 20T, 21T, 22T, 24T, 26T, 28T, 31T, 33T, 38T, 44T, and 50T

mounting hole measurements - 44mm x 62mm

**this just in!!!** can be used for derbi rear wheels with some modification! usually, derbi rear wheels (like variant, laguna....) come with a 30 tooth rear. well, you can file down the outer edge on the wheel where the sprocket fits over so that the tomos rear sprocket will fit on. this must be done VERY carefully and slowly!! millimeter by millimeter all around the little posts. measure please! also, the bolt holes for the sprocket are very close, so drilling out four of the holes on the sprocket in the right place will open them up perfectly to fit on the bolt holes in the wheel. if you mess this up, it's your fault!! but it's totally possible 100%..

22T is tomos OEM # 222586
28T is tomos OEM # 223119
31T is tomos OEM # 227863

taco rating taco rating 4 of 5 4 of 5 Total Reviews: 26 give your taco rating here

  0 taco eaters like this review
 
4 of 5 Bolt holes needed drilling out otherwise fits good October 31, 2025
taco eater : Anonymous Person from Worcester, MA United States  
The sprocket bolt holes were too small for the sprocket bolts to fit through and had to drill them out. But otherwise the sprocket fit the rim on my 08 Tomos Streetmate R perfectly

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2 of 5 doesnt fit on tomos a35 2003 rim June 13, 2022
taco eater : tyler from kalamazoo, MI United States  
the sprocket is to small for chain to go on without rubbing wheel hub you would have to shave down to fit

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  2 taco eaters like this review
 
3 of 5 Shead a little light September 24, 2021
taco eater : Josh from Allendale, NJ United States  
Hard to got on 2010 streetmate. R... Idk how I'm going to get it off cause I sheared the bolt to get it in! But hey gives it a little speed... wish the bolts fit through the hole tho

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  0 taco eaters like this review
 
4 of 5 I’m sure this works great for what it’s made for July 9, 2021
taco eater : Anonymous Person from SC United States  
Exactly what the title says. I bought the 20T for my a3 bullet with original spokes and was like eh I’ll make it work. Holes are perfect but the circumference is too small and there’s no clearance on the back side (side that the sprocket comes in contact with the hub). Still gave it 4/5 tacos because it seems sturdy and the measurements were correct.

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  1 taco eaters like this review
 
5 of 5 20T vs 22T May 23, 2021
taco eater : Hunter Gandee from Oregonia, OH United States  
I originally had the 22T on my 2010 Tomos Streetmate R but figured I would try the 20T. The 20T was too small and my chain was rubbing on the hub. The 22T still has plenty of torque and lots of power.

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