Cylinder kit + head 150cc 57.4mm incl. valves with SLS for 4-stroke China GY6 157QMJ tuning GY6 152QMI Citomerx 107543
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- Item no: 107543
- EAN: 4060861231834
- Manufacturer: Citomerx
- Manufacturer no.: 107543
This powerful 150cc (57.4mm) cylinder kit + head by Citomerx with SLS (secondary air system) and pre-installed valves is the perfect solution for boosting the performance of your 4-stroke China GY6 157QMJ or tuned GY6 152QMI engine. Precision engineered for an exact fit, it ensures noticeable power gains and reliable operation, whether for daily use or sporty tuning purposes. An ideal upgrade or replacement for original parts to achieve long-lasting performance.
Product advantages:
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Noticeable power increase thanks to 150cc displacement
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Perfect fit for GY6 157QMJ / 152QMI engines
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Pre-assembled with valves and SLS
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Durable quality from Citomerx
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Ideal for tuning and replacement
Scope of delivery:
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1x cylinder 150cc 57.4mm
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1x cylinder head incl. valves
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1x gasket set
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1x piston with rings and pin
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1x circlips
Product type: | Cylinder set |
Cylinder head dimensions (LxWxH): | 140 x 140 x 60 mm |
Piston pin diameter: | 15 mm |
Displacement: | 150 ccm |
Can the original cylinder head be used?: | Yes |
Cylinder head stud bolt spacing: | 54 x 54 mm |
Tuning & Styling Part: | No |
Piston ring profile: | Rectangular ring |
Vintage part: | No |
Cylinder head stud diameter: | 9 mm |
Piston special feature: | mit Abstreifring |
Surface finish: | Matt |
Cylinder special feature: | Kettenspanner Lochabstand: 42mm / M6 |
GTIN: | 4060861231834 |
Note: | Mit SLS |
Cylinder dimensions (LxWxH): | 130 x 130 x 90 mm |
Scope of delivery: | Kolben Set, Gasket set, Cylinder, Cylinder head |
Cylinder stud distance: | 54 x 54 mm |
Cylinder stud bore: | 9 mm |
Color: | Grey |
Spark plug thread: | M10 x 1 |
Number of piston rings: | 4 |
Features: | Durable, Corrosion resistant |
Engine type: | 4-stroke |
Scope of delivery: | 1x cylinder set |
Manufacturer number: | 107543 |
Country and region of manufacture: | China |
Type of motorcycle: | Scooter |
Offer package: | Yes |
Units quantity: | 1 |
Description of the package content: | Cylinder head cylinder set |
Manufacturer warranty: | 2 years |
Material: | Several materials |
Type: | Standard |
suitable for: | 4-stroke China GY6 157QMJ / Tuning for GY6 152QMI |
ZS 2Radteile GmbH
Unterbibracherstr. 3
95519 Vorbach
Web page https://www.citomerx.de
Email: info@zweiradteile.net

Citomerx stands for quality, precision, and performance for motorcycles, scooters, mopeds, and quads. As a renowned manufacturer, Citomerx offers a broad range of parts and accessories designed for both DIY enthusiasts and professional workshops. With cutting-edge manufacturing technology, strict quality controls, and innovative design, Citomerx sets new standards for durability and performance.
From cylinder kits and variator weights to exhaust systems and brake components, Citomerx reliably delivers solutions that meet the highest demands. Known for precise fit and excellent value for money, Citomerx parts are the first choice for maintaining and enhancing two-wheelers.
Citomerx understands the needs of riders and offers products engineered for maximum durability and efficiency. Constantly evolving to keep pace with market trends and technological advances, Citomerx is a trusted name for those who value performance, safety, and modern design.
Choose Citomerx – for uncompromised riding pleasure and reliable technology.