Item-Info

AIRbox Sport / Race / L / XL / XXL /Lusso

Generell

If you prefer to place your order personally rather than through my online shop, you are of course very welcome! Just send an email to: info@rk-tunings.at with your questions and requests. I will respond promptly!

 

L, XL or XXL, or XXL-LML? OLD or LUSSO carburetor-box?

  • The AIRboxes are available in L, XL2 and XXL, and new in the XXL-LML membran version. All AIRboxes are also available in the old carburetor-box and the new Lusso carb-box version (with oil pump compatibility) 
  • The new AIRbox L (coming soon in the shop) is a smaler XL version. She has a very narrow top section and a changed back connecting part to fit special on all 8″ Vespa models (VNA, VNB, VBA & VBB). The AIRbox L is ideal for lowered large frame Vespas with shorter shock absorbers also. An elastic plug for idle screw access is included 
  • The new AIRbox XL2 is a redesigned AIRbox XL. The top section is wider, similarly to the XXL. This provides space for the new flexible idle adjustment sleeve. This new sleeve allows adjustment from the outside. She is made for the PX and all older 10″ chassis. 
  • The AIRbox XXL maximizes the available space within the Vespa PX>83′ chassis and impresses with its maximum volume and maximum performance. The new designed flexible sleeve allows adjustment from the outside. 
  • The AIRbox XXL-LML (coming soon in the shop) based on the AIRbox XXL-Lusso. This version is designed 15 mm lower to create space for the LML reed valve block. The lexible sleeve also allows adjustment from the outside. 

 

  • The AIRbox Lusso, available in L, XL2 and XXL variants, is specifically designed for the Lusso carburetor tray with oil pump 
  • The Lusso–set includes the required cable junction box. (Piaggio changed the position of the bore for the wires in this model

 

Sport or Race

  • Both AIRboxes, Sport or Race, have the same design with the same advantages!  The AIRbox Sport is closed, you must use the original Air-intake hole in the Carburetor-box, with or without the flexible frame-hose
AIRbox Sport
AIRbox Race
  • The AIRbox Race is additionally equipped with an 44 mm intake opening for an optimized airflow via the optionally available 69 mm AIRbox venturi

 

AIRbox Sport

  • Two-part housing for optimal accessibility, easy installation, and the use of a symmetrically shaped venturi 
  • By avoiding parallel walls and significantly reducing flat surfaces, the AIRbox is designed to minimize internal reflections and standing waves. This reduces undesired fuel mixture enrichment caused by repeated flow through the jet stack. The result: easier tuning, improved throttle response, and better torque performance 
AIRbox Sport XL / XL - Lusso
AIRbox Sport XXL / XXL - Lusso
  • The AIRbox lower section is mounted to the carburetor tray using the included M5 flat-head screws and nitrile rubber washers 
  • Installation of the lower section is done without the original rubber gasket 
  • Precise alignment of upper and lower sections is achieved via elastic pins and a sealing edge 
  • The upper section is secured using the included 4.5 mm elastic bands 
  • The AIRbox XXL includes a flexible, extendable sleeve for idle adjustment and idle screw fixation 
  • Wall thicknesses of up to 5 mm in exposed areas for increased durability 
  • Thick-walled construction provides improved sound damping 
  • Can optionally be upgraded to a “AIRbox Race” version using an adapter 

 

AIRbox Race

  • Two-part housing for optimal accessibility, easy installation, and the use of a symmetrically shaped venturi 
  • Like the AIRbox Sport, the AIRbox Race is designed with minimized internal reflections and prevention of standing waves by avoiding parallel walls and reducing flat surfaces 
AIRbox Race XL / XL - Lusso
AIRbox Race XXL / XXL - Lusso
  • Equipped with a 44 mm intake opening for additional airflow via the large 69 mm AIRbox venturi 
  • All connection interfaces feature bayonet locks—no screws or cable ties required 
  • The AIRbox lower section is mounted to the carburetor tray using the included M5 flat-head screws and nitrile rubber washers 
  • Installation of the lower section is done without the original sealing gasket 
  • Precise alignment of upper and lower sections is achieved using elastic locating pins and a sealing edge 
  • The upper section is secured using the included 4.5 mm elastic bands 
  • The AIRbox XXL includes a flexible, extendable sleeve for idle adjustment and idle screw fixation 
  • Wall thicknesses of up to 5 mm in exposed areas for increased durability 
  • Thick-walled construction provides improved sound damping 
  • Optional 66 mm AIRbox Venturi with additional mountable filter frame available 

AIRbox accessories

AIRbox venturi – AIRbox venturi filter set 

  • The 69 mm AIRbox venturi, like the carburetor Venturi, is designed for minimal pressure loss within the given space constraints. It connects to the AIRbox via a bayonet mount—without clamps, screws, or tools 
AIRbox Venturi
AIRbox Venturi
  • The AIRbox venturi filter set also includes an AIRbox filter unit, designed to accommodate a 5 mm filter insert (filter material included)
AIRbox Venturi Set (AIRbox Venturi & AIRbox filter frame)
AIRbox Venturi Set (AIRbox Venturi & AIRbox filter frame)

VENturi for SI-carburetor 

Sport or Race 

  • Both Venturis feature the same air inlet design; the difference lies in the one-piece construction of the VENturi Sport compared to the two-piece, divisible design of the VENturi Race 

VENturi Sport 

  • One-piece design 
  • The Venturi nozzle contour is optimized for minimal pressure loss
Venturi Sport (24er, 25er, 26er, 27J&G 2% Vespa tuning)
  • Venturi is secured with 2 screws 
  • Idle screw position remains unchanged during disassembly 
  • Jet holder is not in the airstream, resulting in significantly less leaning at high RPMs and improved tuning precision 
  • Compatible with D24, D25, D26 SI carburetors 
  • Includes two M5 hex socket cap screws 
  • Designed for enthusiasts 

 

VENturi Race 

  • Two-piece design: the lower section is securely mounted to the carburetor using M5 screws; the upper section simply snaps onto the lower part 
  • Jet access without tools and without disassembly 
  • The Venturi nozzle contour is optimized for minimal pressure loss 
Venturi Race (24er, 25er, 26er, 27J&G 2% Vespa tuning)
  • Venturibase is secured with 2 screws 
  • Idle screw position remains unchanged during disassembly 
  • Jet holder is not in the airstream, resulting in significantly less leaning at high RPMs and improved tuning precision 
  • Compatible with
  • Compatible with D24, D25, D26, D27J&G 2% Vespa tuning, D28 Pinasco, and D30J&G 2% Vespa tuning SI carburetors 
  • Includes two M5 hex socket cap screws 
  • Primarily designed for tuners and dedicated mechanics 

Additional accessories 

Carburetor-box Cap 

  • Closure cap made of TPU for the original intake system 
  • Only usable with the AIRbox Race
Carburetor-box Cap
Carburetor-box Cap

 

Carburetor-box venturi 

  • Optimized inlet cone made of TPU and PETG for maximum volume flow 
  • Tool-free and screwless attachment to the bead of the carburetor pan
  • Primarily for tuners and all enthusiastic mechanics
Carburetor-box Venturi
Carburetor-box Venturi

Electric 

Cable cases 

  • Mod1: Larger cable box offering more space for simplified cable routing; suitable for all P80-P200, Sprint, Rally, etc. 
  • Mod2: Enlarged cable box optimized for PX Lusso1, required when using the AIRbox (included in the set)
  • Mod3: Larger cable box providing more space for easier cable installation; suitable for all Lusso2 (Elestart) models
Cable Cases

Contact E-Mail: info@rk-tunings.at