Cylinder kit + head 125ccm 52.4mm (with valves, with SLS) for 4-stroke China GY6 152QMI / Rex RS Baotian BT125 AGM Kymco Citomerx
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- Item no: 107541
- EAN: 4060861231810
- Manufacturer: Citomerx
- Manufacturer no.: 107541
This Citomerx cylinder kit with 125ccm head and 52.4mm bore is the ideal solution for giving your 4-stroke China GY6 152QMI engine – found in Rex RS, Baotian BT125, AGM, or Kymco models – a new lease of life. Manufactured with precision and durable materials, this set ensures excellent fit and longevity. The cylinder head comes pre-assembled with valves, saving you time and effort during installation. The integrated secondary air system (SLS) helps improve exhaust emissions. Perfect for repairs or restoring performance – your scooter will be reliable again in no time.
Product advantages:
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Complete kit including cylinder, head, and pre-assembled valves
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Exact fit for 4-stroke China GY6 152QMI engines
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Durable and robust material selection
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With SLS for improved exhaust values
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Time-saving installation thanks to pre-assembled parts
Scope of delivery:
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1x cylinder 125ccm 52.4mm
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1x cylinder head with pre-installed valves
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1x SLS unit
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1x gasket set
Product type: | Cylinder set |
Cylinder head dimensions (LxWxH): | 140 x 140 x 60 mm |
Piston pin diameter: | 15 mm |
Displacement: | 125 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: | 4060861231810 |
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: | Corrosion resistant, Durable |
Engine type: | 4-stroke |
Scope of delivery: | 1x cylinder set |
Manufacturer number: | 107541 |
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 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.