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Big Bore Kits for the Zuma 125 should be installed by a qualified technician



NCY Zuma125:

59mm aluminum cylinder, with a cast iron sleeve (w/o head).

Give your Yamaha Zuma 125 some extra kick with this bolt on 158cc big bore kit.

Don't forget that unlike most scooters, the Yamaha Zuma 125 is a Fuel Injected Scooter, and in order to get this cylinder kit to perform properly, you should purchase a Fuel Injection Module.

We recommend the Two Brothers Juice Box.

( 59mm = 158CC )

 Your electronically fuel-injected Zuma 125 can now boast improved drivability and more power with the Dobek Electronic Jet Kit!

(see products page 3 for complete electronic jet kit info) 


Oil Cooler!


 Direct bolt on upgrade!

Lower oil temps equal:

1. Better Gas Mileage

2, Longer Engine Life

   This is a great upgrade for any bike, performance oriented or not.



Performance Cam
The A9 is most popular cam shaft used when doing upgrades for power take off.

Beef up your power with this racing cam.

Service Manual - Owners Manual & Assembly Manual

A must if you are going to install big bore kits or cams on your zuma 125!

Page 1 Exhaust Systems
Page 2 Belts - Springs - Rollers
Page 3  Electronic Jet Kit- Air Filters- Breathers
Page 4 Variator
Page 5 Clutch - Final Drive
Page 6 Big Bore Kit-Oil Cooler
Page 7 Brakes
Page 8 Tires & Wheels
Page 9  Front Suspension
Page 10 Rear Suspension
Page 11  Dual Head Light Kit - Battery - BatteryTender
Page 12 Corbin SEAT- Service Manual - Lock - Safety Vest
Page 13 Rear Rack - Travel Trunk - Saddlebags, License Frame, Red Light Changer, Scooter Kilt, Cover, Winshield
Page 14  
Page 15  Bling for the 125!
Page 16  Tech Tips 
Page 17  Engine Work


Zumasrus Home


  All products are Legal Only for Racing Vehicles
and are not intended for use on pollution controlled street vehicles