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Yamaha Zuma 125 CODO 164cc Complete Big Bore Package

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As low as: $1,193.00

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DROWsports CODO 164cc Big Bore Complete Package for the Yamaha Zuma125 is an all in one performance engine upgrade kit. This utilizes some of the best quality parts for the power increase.

1 x Codo Racing Zuma 125 164cc Kit   +$1,193.00

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The CODO 164cc Big Bore Package for the Yamaha Zuma125 is a performance engine upgrade. This kit is designed to increase overall performance while maintaining reliability. Most kits these days are strung out or use non-treated parts causing them to either fail prematurely or not maximize the performance. The CODO top end build uses a spec machined Ceramic cylinder paired with Forged Piston. This helps provide good performance while maintaining reliability and durability. The Cylinder Head uses all new rocker arms, and a camshaft to utilize the new piston size and new bore. The exhaust and intake manifold is properly paired to maintain a smooth transition all the from the air intake, through the throttle body, right into the manifold. The smooth flow provides a much smoother throttle response while allowing the engine to properly breathe. A new top end won't always get you running smoothly on a CVT transmission. That is why this kit also includes a full variator kit.

Top End
The CODO Top End kit comes with a complete cylinder head, cylinder, and piston. The Cylinder Head comes with all necessary components. This includes the roller rockers, camshaft, titanium retainers, larger intake and exhaust valves, a matching intake manifold with a 30mm throttle body and 120cc injector to match. The Cylinder Head uses larger and more durable parts for reliability and better flow. Paired with this head is a 58.5 Ceramic Forged Piston that sits in a larger Ceramic Cylinder. Having a Forged Piston is one of the best available options for performance and durability.

Bottom End
A replacement crankshaft is a major component necessary for durability and quality. This crankshaft comes with +3mm billet rods for extra performance. Having a billet rod with the extra +3mm length will offer the longest durability with less stress on the rods itself. Using this crankshaft will ensure best utilization of the top end kit CODO provides. This is a well-balanced performance crankshaft that does not skimp out on strength and quality.

Matching components are extremely essential and CVT components including the clutch are no exception. The replacement variator is crucial in getting your transmission running right. The variator has new ramp angles for the sliders and belt. It helps the belt slide up and down properly. That is why we recommend replacing the belt along with the rest of the CVT components. The clutch and final drive gears are set to match the new top end power. Changing the final drive ratio will help get your Zuma up to speed while maintaining powerful torque to get you there. Having a proper final drive gear for your setup will utilize the top end fully.

Intake & Exhaust
Each cylinder head build no matter what will require a correctly match intake and exhaust. This not only includes a complete air intake system that goes from the air filter to the 30mm throttle body into the matching intake manifold. The correct flow straight from the air filter with the proper 30mm sized intake allows the engine to fully breathe.
The Performance Sleeper Exhaust by CODO is a matching system designed specifically to match the new air flow. The exhaust is well constructed so pressure exiting the head flows without catching and tumbling. This not only allows the air to flow through the system correctly, but it is also fairly quiet! The best option for many riders who are looking for performance without a loud headache.


  • Full Big Bore replacement
  • Increased horsepower and torque
  • Matching exhaust for best performance
  • Matching CVT & clutch for best performance
  • Replacement performance air filter
  • Daily riding reliability


  • Roller Rocker & Camshaft
  • Ceramic Cylinder with Forged Piston 58.5mm
  • Cylinder Head with Titanium Retainer & 22mm Intake/19mm Exhaust Valves
  • Crankshaft +3mm Stroker with Billet Rods
  • Performance Air Filter (factory air box)
  • 30mm Throttle Body & 120cc Injector
  • Lightweight Cooling Fan 
  • Performance Belt Upgrade (optional)
  • Performance Sleeper Exhaust (optional)
  • Codo Variator & Clutch Kit (optional)
  • Final Drive Gears (optional)

Performance engine items are Non-Returnable, Non-Refundable & have no Warranty. Please contact us if you have any questions or concerns.

WARNING: Cancer and Reproductive Harm -

Additional Info

Additional Info

Specifications No
Brand Codo Racing


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