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Complete Naraku Qmb139 52.4mm Performance Cylinder & Head Kit - Today Only [jwhZvQeD]

$55.99 $179.99 -69%

Complete Naraku Qmb139 52.4mm Performance Cylinder & Head Kit - Today Only [jwhZvQeD] Enhance your engine's performance with the Complete Naraku Qmb139 52.4mm Performance Cylinder & Head Kit - Today Only [jwhZvQeD], designed for 50cc/49cc QMB139 engines. This comprehensive kit includes all necessary components for

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Complete Naraku Qmb139 52.4mm Performance Cylinder & Head Kit - Today Only [jwhZvQeD]

Enhance your engine's performance with the Complete Naraku Qmb139 52.4mm Performance Cylinder & Head Kit - Today Only [jwhZvQeD], designed for 50cc/49cc QMB139 engines. This comprehensive kit includes all necessary components for a seamless upgrade, ensuring optimal performance and efficiency.

Key Features and Specifications

The Naraku 50cc QMB139 4-stroke 52.4mm Racing Big Bore Cylinder and Head Kit is a powerhouse of performance. When paired with a stock stroke of 41.4mm, the total displacement increases to an impressive 89.3cc. For even greater power, use a 44mm stroker crank to achieve a total displacement of 94.9cc. The kit includes a cylinder, piston, rings, piston pin, cir clips, cylinder head, head gasket, and base gasket, ensuring a complete and hassle-free installation.
  • Displacement Upgrade: Up to 89.3cc with stock stroke, 94.9cc with 44mm stroker crank.
  • Component Inclusion: Cylinder, piston, rings, piston pin, cir clips, cylinder head, head gasket, and base gasket.

Practical Uses and Benefits

This performance cylinder and head kit is a game-changer for both racers and enthusiasts looking to boost their engine's power and efficiency. The non-emissions style head and short 64mm valve stems ensure compatibility with engines requiring 64mm valves. The kit also includes a head gasket and base gasket for a secure fit. The cylinder bore measures 52.4mm, while the cylinder sleeve outer diameter is 54.4mm, providing a perfect fit for your engine. The wrist pin diameter is 13mm, and the total piston height is 36.3mm with a compression height of 20mm. Key specifications include:
  • Intake Valve: 23mm
  • Exhaust Valve: 20mm
  • Intake Port Diameter: 20.8mm
  • Exhaust Port Diameter: 18.7mm
Upgrade your engine with the Complete Naraku Qmb139 52.4mm Performance Cylinder & Head Kit - Today Only [jwhZvQeD] and experience the difference in performance and efficiency.

What Our Customers Say

January 1, 2026

Absolutely no complaints!

This is an exceptional tool for the job.

- Erica N..

January 1, 2026

Absolutely no complaints!

A very wise choice for anyone seeking quality.

- Wise_Shopper.

January 1, 2026

Absolutely no complaints!

A very polished and professional product.

- HonestReviewer.

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