Cylinder Head Cover and Fan Shroud EGIG PERFORMANCE CoolBoost 220 Highflow for Vespa Smallframe
Two-piece airflow kit for EGIG 220 Smallframe setups—consisting of a cylinder cover and a high-flow fan shroud.
The EGIG PERFORMANCE CoolBoost 220 Highflow set consists of two components: a cylinder cover and a fan shroud. It is designed for Vespa Smallframe models such as the V50, PV125, ET3, PK, PK S, PK XL, and PK XL2 with a compatible EGIG 220 engine configuration. These components channel cooling air to the area around the fan impeller and cylinder. As such, they are among the parts that must fit precisely with the specific cylinder, fan impeller, and engine housing used in high-displacement small-frame setups.
EGIG PERFORMANCE
CoolBoost 220
High-Flow
2-piece set
Vespa Smallframe
Note: Fan blade
What Makes the EGIG CoolBoost 220 Highflow Set Special
Two-piece set: consists of a cylinder head cover and a fan blade cover
For EGIG 220 setups: Designed for high-performance Vespa Smallframe engines with the corresponding cylinder configuration
High-flow version: Fan blade cover compatible with the high-flow fan blade variant
Targeted airflow: Cooling air is directed toward the fan blade and cylinder
Small-frame application: for V50, PV125, ET3, PK, PK S, PK XL, and PK XL2 with compatible components
Part of the engine assembly: Check together with the fan, cylinder, frame, and engine housing
Cylinder cover and fan blade cover as a matched set
In air-cooled Vespa small-frame engines, airflow management is an integral part of the engine design. The fan impeller circulates cooling air, which is directed to the cylinder via the fan impeller cover and cylinder cover. Especially with high-displacement setups like the EGIG 220, the fairing must be compatible with the cylinder, fan impeller, and engine housing being used to ensure that the airflow is directed precisely and that no unnecessary gaps or mechanical collisions occur.
The CoolBoost 220 Highflow Set fully addresses this requirement: The cylinder hood encloses the cylinder, while the fan blade cover seals off the area around the high-flow fan blade. Both components should be tested together on the assembled engine before the engine is finally installed and put into operation.
Important: Select a fan shroud that matches the fan
The fan shroud must match the fan model being used. EGIG distinguishes between Highflow and Hyperflow. This version is intended exclusively for the Highflow model.
Do not select based solely on the vehicle model: the fan actually installed is the decisive factor
Highflow: Use this variant together with a matching Highflow fan impeller
Hyperflow: If using a Hyperflow fan impeller, select the corresponding Hyperflow cover
Check before installation: Verify free rotation, fit, and airflow on the assembled engine
For EGIG 220 Smallframe engines
This kit is designed for EGIG 220 engine setups based on the Vespa Smallframe. This includes projects based on the PV125, ET3, and PK125, as well as corresponding conversions into V50 or PK frames. A prerequisite is that the engine case, cylinder, high-flow fan impeller, and other components are compatible with one another.
For engines in this power class, the peripheral components often differ significantly from the stock configuration. The cylinder head cover and fan shroud should therefore not be considered universal standard fairings, but rather as components specifically matched to the complete EGIG 220 engine assembly.
High-flow or Hyperflow: The variant must match the fan impeller
The most important factor in making your selection is the type of fan blade being used. An incompatible fan blade cover cannot fit properly, make mechanical contact with the fan blade, or may interfere with the cooling airflow. Before ordering, you should therefore clearly determine whether a Highflow or Hyperflow fan blade is installed on the engine.
Selection Guide
High-flow fan installed: use this CoolBoost 220 High-flow cover
Hyperflow fan installed: Select the corresponding Hyperflow variant
Model unknown: Identify the existing fan blade before ordering
Custom installation: Check the installation space, hood contour, and mounting points directly on the vehicle
Assembly and Installation Space
Before final installation, the cylinder head cover and fan shroud should be dry-fitted to the assembled engine. During this process, check the fit, mounting, distance to the fan, distance to the frame, and the path of the cooling airflow. For small-frame engines with modified housings, large cylinders, and special fan impellers, even minor deviations in the installation can be critical.
Installation Instructions
Dry-fit: Check the cylinder head cover and fan shroud against the engine before final assembly
Fan wheel clearance: The fan wheel must not rub against the cover at any point
Check variant: Do not confuse Highflow and Hyperflow
Check frame clearance: For V50, PV, ET3, and PK models, the setup and frame design can affect the installation space
Consider cooling as a system: Ignition, fuel injection, fan, cover, and thermal load must be compatible with the engine configuration
Scope of Delivery
Included Components
1x Cylinder cover for EGIG CoolBoost 220
1x High-flowfan shroud
Compatible vehicle models – grouped
| Vespa 50 N / L / R | V5A1T—check for compatible EGIG 220 engine configuration |
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| Vespa 50 Special | V5A2T / V5B1T / V5B3T, check for compatible EGIG 220 engine configuration |
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| Vespa 50 Elestart | V5A3T / V5B2T / V5B4T, check installation space and engine configuration |
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| Vespa 125 Primavera | VMA2T, check for compatible EGIG 220 engine configuration |
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| Vespa 125 ET3 | VMB1T, check engine configuration with matching EGIG 220 |
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| Vespa PK50 / PK50 S | V5X1T / V5X2T, check for compatible EGIG 220 engine configuration |
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| Vespa PK50 XL / XL2 | V5X3T, check for compatible EGIG 220 engine configuration |
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| Vespa PK125 / PK125 S | VMX1T / VMX5T, check for compatible EGIG 220 engine configuration |
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| Vespa PK125 XL / XL2 | VMX6T / VVMX7T, check depending on market version |
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| Vespa PK125 ETS | VMS1T, check for compatible EGIG 220 engine configuration |
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Technical Overview
| Manufacturer | EGIG PERFORMANCE |
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| Type | Cylinder head cover and fan shroud |
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| Series | CoolBoost 220 |
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| Version | High-flow |
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| Scope of Delivery | Cylinder cover and fan blade cover |
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| Application | EGIG 220 Smallframe engine assemblies with Highflow fan |
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| Compatible with | Vespa V50, PV125, ET3, PK, PK S, PK XL, and PK XL2 with compatible setup |
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| Selection Guide | Select a fan shroud that matches the fan blade being used: Highflow or Hyperflow |
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| Installation Note | Check for free movement, proper fit, and airflow before final installation |
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Conclusion
The EGIG PERFORMANCE CoolBoost 220 Highflow Set combines a cylinder head cover and fan blade cover for EGIG 220 small-frame engines equipped with a Highflow fan blade. It is crucial to ensure the correct match with the fan blade model being used: Do not confuse Highflow and Hyperflow. When the cylinder, fan impeller, hood, and cover are properly matched, they create a seamless airflow path for high-performance Vespa V50, PV125, ET3, and PK projects.
FAQs about the EGIG CoolBoost 220 Highflow Set
The set consists of two components: a cylinder hood and a fan blade cover in the Highflow version.
The fan cover must match the fan model being used. This version is designed for Highflow. If you’re using a Hyperflow fan, you must use the corresponding Hyperflow cover.
The kit is designed for EGIG 220 Smallframe engine setups. For stock-style engines or engines with non-standard cylinders, the fit, mounting, and airflow must be checked before use.
Check that the fan impeller rotates freely, that the cover fits properly, that the bolts are tight, that there is sufficient clearance from the frame, and that the set is compatible with the specific fan impeller model being used.
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