Decompression valve suitable for Malossi cylinder heads on your Piaggio Ciao, Si, Bravo and Boxer moped / moped.
This decompression valve was originally installed on the BIG DEPS cylinder head, but is now also used on the new Malossi heads with curved fins (market launch 2021).
Total length: 51.7 mm
Ø stem: 4.45 mm
Ø undercut: 3.5 mm
Ø head: 6.8 mm
Note: This decorative valve is intended exclusively for Malossi cylinder heads and does not fit original cylinder heads or those from other manufacturers. It is also not suitable for older Malossi cylinder covers with straight fins from the Ciao model or for the Piaggio Si heads that are still available for sale.
The remaining parts required to complete the valve must be taken from the original valve (see accessories).
You can find complete racing kits, the matching pipes for the valve and other parts in the accessories section.
Quality product from the Italian manufacturer Malossi.
| Manufacturer | Malossi |
| Material | Steel |
| Area of application | Tuning |
| Ø outside | 4.45 mm |
| Ø External head | 6.8 mm |
| Total length | 51.7 mm |
| Piaggio | Ciao - P , SC , PX , C24 Si Bravo / Super Bravo Boxer Grillo |
Accessories & related products
Malossi cylinder head for 41 - 43 mm cylinder kit | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Malossi · Material: Aluminum · Camouflaged: No · Surface: sandblasted · Ø cylinder: 41 - 43 mm · Width: 87 mm · Height: 60 mm · Total length: 122 mm · Candle thread: long · Number of fixing points: 3 pcs · Hole pattern [mm]: 35 x 55 · Decompressor: Yes · Area of application: Racing
EUR 89.40
Malossi cylinder head for 44 - 47 mm cylinder kit | Piaggio Ciao, Bravo 1, Boxer
Manufacturer: Malossi · Material: Aluminum · Area of application: Racing · Width: 87 mm · Ø cylinder: 44 - 47 mm · Height: 60 mm · Total length: 122 mm · Surface: sandblasted · Candle thread: long · Number of fixing points: 3 pcs · Hole pattern [mm]: 35 x 55 · Decompressor: Yes · Camouflaged: No
EUR 97.90
Malossi 43 mm cylinder kit incl. head 10 mm KoBo new version | Piaggio Ciao, Bravo, Boxer
Manufacturer: Malossi · Material: Aluminum · Material: Gray cast iron · Camouflaged: No · Displacement: 63 ccm · Crankshaft stroke: 43 mm · Nominal diameter: 43 mm · Number of fixing points: 3 pcs · Ø piston pin (B): 10 mm · Outlet type: clamped · Area of application: Tuning
EUR 245.00
Malossi 43 mm cylinder kit incl. head 12 mm KoBo new version | Piaggio Ciao, Bravo, Boxer
Material: Gray cast iron · Manufacturer: Malossi · Surface: sandblasted · Nominal diameter: 43 mm · Displacement: 63 ccm · Crankshaft stroke: 43 mm · Ø piston pin (B): 12 mm · Outlet type: clamped · Number of fixing points: 3 pcs · Decompressor: Yes · Camouflaged: No · Area of application: Tuning
EUR 245.00
Not in stock
Malossi 46.5 mm cylinder kit incl. head 10 mm KoBo | Piaggio Ciao, SI, Bravo, Boxer
Nominal diameter: 46.5 mm · Manufacturer: Malossi · Material: Gray cast iron · Area of application: Tuning · Displacement: 70 ccm · Crankshaft stroke: 43 mm · Surface: sandblasted · Number of fixing points: 3 pcs · Ø piston pin (B): 10 mm · Outlet type: clamped · Decompressor: Yes · Camouflaged: No
EUR 208.30
Malossi 46.5 mm cylinder kit incl. head 12 mm KoBo | Piaggio Ciao, SI, Bravo, Boxer
Nominal diameter: 46.5 mm · Manufacturer: Malossi · Material: Gray cast iron · Surface: sandblasted · Displacement: 70 ccm · Crankshaft stroke: 43 mm · Ø piston pin (B): 12 mm · Outlet type: clamped · Number of fixing points: 3 pcs · Decompressor: Yes · Camouflaged: No · Area of application: Tuning
EUR 220.50
Dell'Orto 13/13 SHA carburetor & racing air filter set | Piaggio Ciao PX, C24
Manufacturer: Dell'Orto · Manufacturer: Malossi · Component group Carburetor: Carburetor complete · Carburetor type: SHA (Piaggio) · Nominal diameter: 13 mm · Total length: 46 mm · Height: 96 mm · Nozzle thread: M5x0.8 (standard thread) · Ø without reducing sleeve: 18 mm · Nozzle size: 66 · Ø Inside entrance: 13 mm · Ø Output inside: 13 mm · Ø Air filter connection: 50.8 mm · Ø Internal connection: 16 mm · Ø fuel hose connection: 6 mm · Mounting type: Plug connection clamped · Choke control: Hand choke · Area of application: Tuning · Width: 60 mm
EUR 82.00
Explore categories from Cylinder
Moped fans also bought
Hot 
swiing® revival nozzle set M5 (50 - 70) Dell'Orto SHA, PHBG
Manufacturer: swiing® revival parts · Material: Brass · Quantity: 10 pcs · Component group Carburetor: Spraying · Carburetor type: PHBG · Carburetor type: SHA · Carburetor type: SHA (Piaggio) · Nozzle type: Main nozzle · Drive: Slot · Total length: 8 mm · Nozzle thread: M5x0.8 (standard thread) · Nozzle size: 50 · Nozzle size: 52 · Nozzle size: 55 · Nozzle size: 58 · Nozzle size: 60 · Nozzle size: 62 · Nozzle size: 64 · Nozzle size: 66 · Nozzle size: 68 · Nozzle size: 70
EUR 25.60
Hot
Malossi air filter | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Malossi · Camouflaged: No · Material: Plastic · Color: black · Filter type: Foam · Ø outside: 53.2 mm · Ø Internal connection: 51 mm · Width: 95 mm · Total length: 31.2 mm · Height: 88.7 mm · Mounting type: Plug connection clamped · Area of application: Tuning
EUR 24.40
Malossi 43 mm cylinder kit 10 mm KoBo new version | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Malossi · Material: Gray cast iron · Camouflaged: No · Surface: sandblasted · Displacement: 63 ccm · Crankshaft stroke: 43 mm · Nominal diameter: 43 mm · Ø cylinder neck: 45.6 mm · Ø Outlet outside: 22.5 mm · Ø outlet inside: 18.3 mm · Number of fixing points: 3 pcs · Ø piston pin (B): 10 mm · Outlet type: clamped · Hole pattern [mm]: 55 x 34 · Decompressor: Yes · Area of application: Tuning
EUR 177.60
Malossi cylinder head for 41 - 43 mm cylinder kit | Piaggio SI, Bravo
Width: 94 mm · Manufacturer: Malossi · Material: Aluminum · Camouflaged: No · Area of application: Racing · Ø cylinder: 41 - 43 mm · Total length: 134 mm · Hole pattern [mm]: 35 x 55 · Height: 52 mm · Candle thread: short · Number of fixing points: 3 pcs · Decompressor: Yes
EUR 85.70
Dell'Orto 13/13 SHA carburetor | Piaggio SI, Boss, Grillo
Material: Aluminum · Manufacturer: Dell'Orto · Nominal diameter: 13 mm · Component group Carburetor: Carburetor complete · Carburetor type: SHA (Piaggio) · Color: black · Nozzle thread: M5x0.8 (standard thread) · Ø without reducing sleeve: 18 mm · Nozzle size: 66 · Ø Inside entrance: 13 mm · Ø Internal connection: 16 mm · Ø Output inside: 13 mm · Ø Air filter connection: 50.8 mm · Height: 118 mm · Ø fuel hose connection: 5.2 mm · Ø fuel hose connection: 6 mm · Total length: 55 mm · Mounting type: Plug connection clamped · Width: 60 mm · Choke control: Hand choke · Camouflaged: No · Area of application: Tuning
EUR 85.70
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
