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Yamaha Zuma 125 Final Drive Gear Set

Availability: In stock


 Yamaha Zuma 125 upgrade final drive gear set for longer gear and more top speed.

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If you're planning on using your Zuma 125 scooter as a street-driven, drag-bike, you really need the best acceleration you can buy. While top speed is important, you need to get to that speed quickly. This is where the 12/40 (3.33 Ratio) gear set comes in. You get the best acceleration and with a small hurt in speed, while at the same time being able to tackle steeper hills, too. The 12/40 will also work well with stock Zuma 125. For Zuma 125 with a big bore that's looking for more top speed, the 13x39 (3.00 ratio) is what you need.

Additional Info

Additional Info


 Yamaha Zuma 125 12/40 Final Drive

  • 12 tooth pinion gear
  • 40 tooth ring gear
  • 3.33 to 1 ratio
  • Optimmum gear for 70mph

Yamaha Zuma 125 13/39 Final Drive

  • 13 tooth pinion gear
  • 39 tooth ring gear
  • 3.00 to 1 ratio
  • Optimum gear for big bore motors

Stock Zuma 125 final drive 11/44 (4.00 to 1 ratio)

Brand Other


13/ 39 final gearReview by Joseph
I purchased the 13 x 39 final drive and I was more pleased with that for the performance and the upright speed I was getting now I am returning to buy another 13539 final drive (Posted on 1/16/18)

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