Cylinder cover without decompressor bore with a combustion chamber diameter of 40 mm suitable for your moped / moped with Sachs 503 2AL, AAL, 2BL, ABL CH engine.
The flat milled head is cleanly finished and fits both bored-out original Sachs cylinders and tuning cylinders with a diameter of 40 mm. The internal geometry of the tuning cylinder head is adapted to the piston for the AKOA 54 cc cylinder kit in the "Power Edition". The combustion chamber has been slightly reduced in size compared to the previous model and the squeeze band has been slightly raised.
| Height | 29 mm |
| Manufacturer | AKOA |
| Area of application | Tuning |
| Material | Aluminum |
| Ø cylinder | 40 mm |
| Ø outside | 84 mm |
| Number of fixing points | 4 pcs |
| Candle thread | short |
| Decompressor | No |
| Hole pattern [mm] | 37 x 37 |
| Sachs | 503 - AAL , ABL , 2AL / 2BL |
Ratings
Accessories & related products
AKOA 40 mm cylinder head for decovalve | Sachs 503 2AL, AAL, 2BL, ABL
Manufacturer: AKOA · Material: Aluminum · Ø cylinder: 40 mm · Ø outside: 84 mm · Number of fixing points: 4 pcs · Hole pattern [mm]: 37 x 37 · Candle thread: short · Decompressor: M10x1.5 · Height: 29 mm · Area of application: Tuning
EUR 71.10
AKOA 40 mm cylinder kit "Power-Edition" | Sachs 503 2AL, AAL, 2BL, ABL
Manufacturer: AKOA · Camouflaged: No · Material: Aluminum · Surface: Nickel silicon carbide (colloquially known as Nikasil) · Displacement: 54 ccm · Crankshaft stroke: 43 mm · Nominal diameter: 40 mm · Ø cylinder neck: 45.5 mm · Ø Outlet outside: 25.9 mm · Ø outlet inside: 20.5 mm · Number of fixing points: 4 pcs · Ø Inlet inside: 15.8 mm · Thread inlet: M6x1 (standard thread) · Hole pattern [mm]: 40 x 60 / 37 x 37 · Decompressor: No · Ø piston pin (B): 12 mm · Outlet type: clamped · Hole spacing inlet: 32 mm · Area of application: Tuning
EUR 213.50
AKOA 40 mm cylinder kit "Power-Edition" with head (selection) | Sachs 503 2AL, AAL, 2BL, ABL
Nominal diameter: 40 mm · Manufacturer: AKOA · Material: Aluminum · Surface: Nickel silicon carbide (colloquially known as Nikasil) · Displacement: 54 ccm · Crankshaft stroke: 43 mm · Ø cylinder neck: 45.5 mm · Ø Outlet outside: 25.9 mm · Ø outlet inside: 20.5 mm · Ø Inlet inside: 15.8 mm · Thread inlet: M6x1 (standard thread) · Hole spacing inlet: 32 mm · Ø piston pin (B): 12 mm · Outlet type: clamped · Number of fixing points: 4 pcs · Hole pattern [mm]: 40 x 60 / 37 x 37 · Camouflaged: No · Area of application: Tuning
EUR 249.00
Explore categories from Cylinder
Moped fans also bought
Hot 
KMC drive chain 415H (reinforced) 128L
Chain pitch: 1/2" x 3/16" · Chain type: 415H · Ø Pin: 3.94 mm · Manufacturer: KMC · Material: Steel · Surface: blank / oiled · Number of chain links: 128 pcs · Rolling circumference: 1626 mm · Chain lock type: Spring lock · Color: gray · Ø bore: 4 mm
EUR 14.80
Hot
Gas cable Ø 1.25 mm x 220 cm (cylindrical nipple) Bing
Ø Stranded wire: 1.25 mm · Cable length: 2200 mm · Ø nipple: 3 mm · Manufacturer: Made in Germany · Area of application: Standard · Material: Steel · Surface: galvanized (blue) · Number of components: 1 pcs · Nipple shape: Cylinder · Nipple length: 5 mm
EUR 2.85
Hot
Brake cable Ø 1.8 mm x 220 cm (pear-shaped nipple)
Ø Stranded wire: 1.8 mm · Cable length: 2200 mm · Ø nipple: 3.5 mm · Ø nipple: 6 mm · Manufacturer: Made in Germany · Area of application: Standard · Material: Steel · Surface: galvanized (blue) · Number of components: 1 pcs · Nipple shape: Pears · Nipple length: 10 mm
EUR 2.85
swiing® revival air filter Racing | Sachs 503
Total length: 165 mm · Width: 68 mm · Height: 52 mm · Manufacturer: swiing® revival parts · Area of application: Tuning · Material: Plastic · Filter type: Racing screen · Color: black · Mounting type: Plug connection clamped · Ø Internal connection: 20 mm · Camouflaged: No
EUR 71.10
AKOA 40 mm cylinder kit "Power-Edition" | Sachs 503 2AL, AAL, 2BL, ABL
Manufacturer: AKOA · Camouflaged: No · Material: Aluminum · Surface: Nickel silicon carbide (colloquially known as Nikasil) · Displacement: 54 ccm · Crankshaft stroke: 43 mm · Nominal diameter: 40 mm · Ø cylinder neck: 45.5 mm · Ø Outlet outside: 25.9 mm · Ø outlet inside: 20.5 mm · Number of fixing points: 4 pcs · Ø Inlet inside: 15.8 mm · Thread inlet: M6x1 (standard thread) · Hole pattern [mm]: 40 x 60 / 37 x 37 · Decompressor: No · Ø piston pin (B): 12 mm · Outlet type: clamped · Hole spacing inlet: 32 mm · Area of application: Tuning
EUR 213.50
AKOA 40 mm cylinder kit "Power-Edition" with head (selection) | Sachs 503 2AL, AAL, 2BL, ABL
Nominal diameter: 40 mm · Manufacturer: AKOA · Material: Aluminum · Surface: Nickel silicon carbide (colloquially known as Nikasil) · Displacement: 54 ccm · Crankshaft stroke: 43 mm · Ø cylinder neck: 45.5 mm · Ø Outlet outside: 25.9 mm · Ø outlet inside: 20.5 mm · Ø Inlet inside: 15.8 mm · Thread inlet: M6x1 (standard thread) · Hole spacing inlet: 32 mm · Ø piston pin (B): 12 mm · Outlet type: clamped · Number of fixing points: 4 pcs · Hole pattern [mm]: 40 x 60 / 37 x 37 · Camouflaged: No · Area of application: Tuning
EUR 249.00
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
