Mikuni Type 18mm 2 Stroke 49-100cc - QJ, Vento, Keeway, & Others

The Mikuni Type 18mm Carburetors collection includes compact, high-quality 2-stroke carburetors designed for 49cc–100cc engines. These carburetors are commonly found on scooters produced by QJ, Vento, Keeway, and various other manufacturers. Their 18mm venturi size offers a balance of low-end responsiveness and mid-range power, making them ideal for everyday riding. Over time, original carburetors may suffer from clogged jets, worn needles, or air leaks, all of which can reduce performance. Replacing them with a Mikuni-style unit is a quick way to regain smooth starting and stronger throttle response.

This category may include:

• 18mm Mikuni-style carburetors for 2-stroke 49cc–100cc engines
• Jets, floats, needles, and other internal replacement components
• Direct-fit units for QJ, Vento, Keeway, and additional small 2-stroke scooters
• Carburetors designed for both stock and lightly modified engines
• Durable cast-body designs built for reliable fuel metering

Additional notes about this collection:

• Helps resolve hard starting, poor idle, and sluggish acceleration
• Supports improved responsiveness across the powerband
• Useful for full carburetor replacement or periodic tuning and cleaning
• Designed for accurate fit when matched to intake diameter and engine displacement