CILOYU Motorized Bike Carburetor & Ignition Kit for 49cc–100cc Engines — 3-Piece Set with Lighted CDI & Upgraded Magneto

CILOYU's motorized bicycle carburetor and ignition kit replaces worn parts on 49cc–100cc 2-stroke engines to restore reliable starting and smoother idling.

Replace failing fuel and ignition components quickly with this three-piece set engineered for small 2-stroke motorized bicycle engines. The kit includes an upgraded 2-stroke carburetor, a CDI-style ignition coil with a lighted section for status feedback, and an aluminum-encased magneto coil with heavy-gauge windings to resist corrosion and improve spark strength. Together these parts aim to deliver steadier idle, easier cold starts, and consistent ignition timing for 49cc, 50cc, 66cc, 80cc, and 100cc motorized bike motors.

How does this kit improve my motorized bike's starting and idle?

The carburetor has been tuned to offer a more stable idle and cleaner throttle response, while the improved magneto coil provides stronger, more consistent spark generation. The ignition coil includes a visual indicator so you can confirm spark activity at a glance.

• Rebuilt carburetor circuits for steadier idle and throttle control
• Thicker copper windings in the magneto for better spark energy
• Ignition coil with lighted section to verify successful ignition
• Compatibility across 49cc–100cc 2-stroke motorized bicycle engines

Will these parts fit my 50cc or 80cc motorized bicycle engine?

Yes—the kit is designed for broad fitment across common small 2-stroke motorized bicycle motors, including 49cc, 50cc, 66cc, 80cc, and 100cc variants. Always compare mounting points and intake flange dimensions against your current components before installation.

• Works with 49cc, 50cc, 66cc, 80cc, and 100cc 2-stroke engines
• Check flange size and bolt pattern to confirm exact fit
• May require basic adjustments or gaskets for a perfect seal

What tools and skills are required to install the kit?

Installation is a straightforward mechanical swap for anyone comfortable with basic small-engine maintenance. You will need common hand tools, a clean work area, and a few minutes to tune idle mixture and timing after assembly.

• Basic tools: screwdrivers, pliers, wrenches, and socket set
• Simple electrical hookup for ignition coil and magneto connections
• Minor carburetor tuning (idle and mixture) after mounting

What comes in the box and how does each part help performance?

The package contains a 2-stroke carburetor, a CDI-style ignition coil with an indicator, and an aluminum-encased magneto coil. Each piece addresses a common failure point: fuel metering, spark generation, and magneto durability—so replacing them together often yields the best overall improvement.

• 2-stroke carburetor: restores proper fuel-air mix and idle
• Ignition coil (CDI): provides reliable spark with status light
• Magneto coil: aluminum housing resists rust; thick wire aids starting

Who this is for: This replacement kit is intended for DIY riders, bike rebuilders, and mechanics working on small 2-stroke motorized bicycles who need a reliable, single-source fix for fuel and ignition wear. If your bike struggles to idle, has difficult cold starts, or shows intermittent spark issues, this kit supplies the primary hardware required to restore dependable operation—provided the rest of the engine and wiring are in good condition.