VESPTEC Item number: VT1128S28
VESPTEC
Type: Qicklock Airbox STANDARD
Carburetor: SI 28 mm
Fits: PX-alt and Lusso carburetor sumps
Fastening: screwless via supplied bolts
Option: Connection for 28 mm Ramair air filter
Material: FDM printed part made from black PETG-CF
84,90 €*
not available
Shipping weight 0,206 kg

Qicklock Airbox STANDARD for SI 28 mm carburetor

Screwless mountable airbox with significantly more volume, flow-optimized geometry and prepared 28 mm Ramair connection for Vespa PX carburetor sumps.

The Qicklock Airbox STANDARD is a well thought-out solution for Vespa large-frame engines with SI 28 mm carburetors, where more intake volume, better accessibility and clean installation are required. It fits PX-alt and Lusso carburetor bowls, with or without oil pump. The special feature is the screwless mounting: The supplied bolts are fitted to the carburetor sump, on which the airbox is guided and fixed. This makes access to the carburetor much more convenient and saves the cumbersome handling of the cover screws.

SI 28 mm Qicklock screwless mounting more volume Ramair 28 mm prepared PETG-CF

What makes the Qicklock airbox so special

Screwless mounting: the airbox is guided on the carburetor sump using the bolts supplied
More internal volume: flow-optimized geometry for a quieter intake environment
28 mm Ramair connection: prepared for the optional connection of a Ramair air filter
Stance throttle adjustable from the outside: position suitable for SI 28 mm carburetor
Quieter construction: greater material thickness and higher material density reduce intake noise

More volume and better flow

Especially with more powerful SI setups, the volume under the original carburetor cover is quickly limited. The Qicklock airbox offers significantly more space and a flow-optimized internal geometry. As a result, the carburetor has more intake air available, which creates a clean basis for tuning, especially with load changes and larger SI carburetors.

Screwless Qicklock fastening

Instead of fastening the airbox in the classic way with cover screws, special bolts are mounted on the carburetor sump. The airbox is guided over them, making it much easier to remove and refit.

supplied bolts are mounted on the carburetor tray
No classic screwing of the cover
Convenient access to carburetor and jet area
Teflon lubricant recommended for clean sliding on the bolts

Optional 28 mm Ramair connection

The airbox also offers the option of connecting a 28 mm Ramair air filter. A plug-in sleeve is provided for this purpose, with which the air filter can be attached from the inside using a cable tie. If no external air filter is used, the connection hole can be closed with the TPU cover provided.

Important notes on installation

No rubber seal required: the airbox is designed for installation without a rubber seal
Note cable box: a cable box with offset outlet is required
SIP carburetor sump: does not fit without reworking, as the thread in the front area is offset approx. 3 mm higher
Air filter: the Ramair air filter is not included in the scope of delivery
Check clearance: always ensure sufficient clearance to the frame and attachments before the first ride

Material and production

The Qicklock airbox is manufactured as an FDM printed part from black PETG-CF. The material is designed to be more resistant to gasoline and oils and offers a robust, quiet and functional basis for high-performance SI setups thanks to its material thickness and density.

Fit

The airbox is suitable for PX-alt and Lusso carburetor sumps, both with and without oil pump. Thanks to the high accuracy of fit, the airbox sits cleanly on the carburetor sump and can be fitted without a rubber gasket.

CarburettorSI 28 mm
Carburetor sumpPX-alt and Lusso, with or without oil pump
Fasteningscrewless via supplied bolts
Air filter connection28 mm Ramair, optional
materialPETG-CF, black
Rubber sealnot required

Brief technical overview

typeQicklock Airbox STANDARD
Carburetor positionSI 28 mm
Functionmore intake volume, screwless mounting, optional air filter connection
idle speed regulationaccessible from the outside
Scope of deliveryAirbox, fixing bolts, insert sleeve, TPU cap
Not includedRamair air filter

Note on property rights

This product is protected by an EU patent. Imitation, reverse engineering or commercial use without a license is not permitted and may be prosecuted under civil and criminal law. If you suspect unauthorized imitation, please contact us.

Conclusion

The Qicklock Airbox STANDARD for SI 28 mm carburetors combines more intake volume, quieter operating behavior and screwless maintenance convenience in one well-designed component. It is a particularly interesting solution for SI setups with PX-alt or Lusso carburetor sump if the original cover offers too little volume or access to the carburetor is to be made more convenient.

FAQ about the Qicklock Airbox STANDARD SI 28 mm

On PX-alt and Lusso carburetor bowls, with or without oil pump. It does not fit on SIP carburetor sumps without reworking because of the higher offset front thread.
The airbox uses a screwless mounting system. The supplied bolts are fitted to the carburetor sump.
No. The airbox provides the connection for a 28 mm Ramair air filter, but the air filter itself is not included.
No. The airbox is designed for installation without a rubber seal.

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