High-quality 41 mm cast iron racing cylinder with 57 cc suitable for your moped / moped with Sachs 503 2AL, AAL, 2BL, ABL CH engine.
The GPO Pomodoro racing kit is currently one of the most powerful cylinders on the market and impresses with its high torque in the lower engine speed range, powerful acceleration and constant power delivery right up to high engine speeds. The optimized internal design ensures ideal flow characteristics and enables an efficient supply of the petrol-air mixture, which guarantees an evenly strong power build-up. The result is a tuning cylinder that gives your engine a clearly noticeable increase in power and ensures indescribable, dynamic performance on the road.
Due to the correct angle of the intake port and Ø 19 mm bore, both original and swiing® brand intake manifolds and carburetors fit under the side skirts without the need for adjustments. With a 45 mm diameter cylinder neck, no spindling of the engine case is necessary.
The GPO piston improves intake timing, resulting in higher engine speeds. The edges of all ports are smoothed, which enables optimum mixture flow.
Hole pattern [mm]: 40 x 60 / 37 x 37 · Manufacturer: GPO · Material: Gray cast iron · Displacement: 57 ccm · Nominal diameter: 41 mm · Ø cylinder neck: 45 mm · Ø Outlet outside: 26 mm · Ø outlet inside: 22 mm · Ø Inlet inside: 19 mm · Thread inlet: M6x1 (standard thread) · Hole spacing inlet: 32 mm · Outlet type: clamped
Manufacturer: GPO · Nominal diameter: 41 mm · Ø outside piston (A): 40.94 mm · Ø piston pin (B): 12 mm · Compression height (C): 28 mm · Curvature (D): 3.2 mm · Total piston height (E): 49.4 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Piston ring height: 1.5 mm · Thick piston ring: 1.8 mm · Weight piston kit: 86 g
Manufacturer: GPO · Material: Sealing paper, Sealing carton, Aluminum · Number of components: 3 pcs · Thickness: 0.3 mm, 1 mm · Ø cylinder: 41 mm · Hole spacing inlet: 0 - 32 mm
| Manufacturer | GPO |
| Area of application | Tuning |
| Material | Gray cast iron |
| Displacement | 57 ccm |
| Crankshaft stroke | 43 mm |
| Nominal diameter | 41 mm |
| Ø cylinder neck | 45 mm |
| Ø Outlet outside | 26 mm |
| Ø outlet inside | 22 mm |
| Ø Inlet inside | 19 mm |
| Thread inlet | M6x1 (standard thread) |
| Ø piston pin (B) | 12 mm |
| Outlet type | clamped |
| Hole pattern [mm] | 40 x 60 / 37 x 37 |
| Hole spacing inlet | 32 mm |
| Sachs | 503 - AAL, ABL, 2AL / 2BL |
Ratings
Accessories & related products
Exhaust set "Tuning" Ø 28 / 70 mm chrome | Sachs 503 2AL/2BL
Ø outside: 70 mm · Manufacturer: Made in Portugal · Material: Steel · Surface: chrome-plated · Color: Chrome · Total length: 700 mm · Ø Flame tube outside: 28 mm · Exhaust type: Cigar · Mounting type: Screwed clamp · Flame tube attachment: Plug connection clamped
CHF 99.90
swiing® ingenious resonance exhaust set Ø 28 / 70 mm | Sachs 503
Manufacturer: swiing® ingenious parts · Material: Steel · Surface: chrome-plated · Color: Chrome · Total length: 730 mm · Mounting type: Screwed clamp · Exhaust type: Cigar · Ø Internal connection: 28 mm · Ø outside: 70 mm · Flame tube attachment: Plug connection clamped
CHF 139.90
swiing® revival silent blocks Alu Racing | Sachs 503 / 504 / 505 / 535
Manufacturer: swiing® revival parts · Material: Aluminum · Surface: anodized · Nominal diameter inside: 8.5 mm · Ø inside: 8.3 mm · Total length: 13 mm · Ø Bundle: 26 mm · Ø outside: 21.95 mm · Alternative version of the Pony OEM number: A4286 · Alternative version of the Sachs OEM number: 0251 121 000
CHF 23.90
GPO 43 mm "Pomodoro" cylinder kit | Sachs 503 2AL, AAL, 2BL, ABL
Nominal diameter: 43 mm · Manufacturer: GPO · Material: Gray cast iron · Displacement: 63 ccm · Crankshaft stroke: 43 mm · Ø cylinder neck: 45 mm · Ø Outlet outside: 26 mm · Ø outlet inside: 22 mm · Ø Inlet inside: 19 mm · Thread inlet: M6x1 (standard thread) · Hole spacing inlet: 32 mm · Ø piston pin (B): 12 mm · Outlet type: clamped · Hole pattern [mm]: 40 x 60 / 37 x 37 · Area of application: Tuning · Alternative version of the Pony OEM number: A1087 · Alternative version of the Sachs OEM number: 0213 142 000
CHF 224.90
AKOA 41 mm cylinder head for decovalve | Sachs 503 2AL, AAL, 2BL, ABL
Manufacturer: AKOA · Material: Aluminum · Ø outside: 84 mm · Ø cylinder: 41 mm · Candle thread: short · Height: 29 mm · Hole pattern [mm]: 37 x 37 · Area of application: Tuning · Number of fixing points: 4 pcs · Decompressor: M10x1.5
CHF 59.90
Not in stock
AKOA 41 mm cylinder head "Power" edition | Sachs 503 2AL, AAL, 2BL, ABL
Manufacturer: AKOA · Material: Aluminum · Ø cylinder: 41 mm · Ø outside: 84 mm · Candle thread: short · Number of fixing points: 4 pcs · Hole pattern [mm]: 37 x 37 · Decompressor: No · Height: 29 mm · Area of application: Tuning
CHF 49.90
Explore categories from Cylinder
Moped fans also bought
Hot 
swiing® ingenious 15 mm carburetor camouflaged | Sachs 503
Manufacturer: swiing® ingenious parts · Camouflaged: Yes · Component group Carburetor: Carburetor complete · Material: Aluminum · Carburetor type: SRE · Nominal diameter: 15 mm · Ø Internal connection: 20 mm · Ø Inside entrance: 15 mm · Ø Output inside: 15 mm · Ø Air filter connection: 20 mm · Ø fuel hose connection: 6 mm · Mixed oil connection: No · Vacuum connection: No · Choke control: Hand choke · Nozzle thread: M3.5x0.6 (standard thread) · Nozzle block: 2.17 · Nozzle size: 62 · Mounting type: Plug connection clamped · Clamping screw torque (max.): 4 N/m · Total length: 66 mm · Width: 50 mm · Height: 95 mm · Area of application: Tuning
CHF 79.90
swiing® revival air filter Racing | Sachs 503
Manufacturer: swiing® revival parts · Camouflaged: No · Material: Plastic · Color: black · Filter type: Racing screen · Ø Internal connection: 20 mm · Mounting type: Plug connection clamped · Total length: 165 mm · Width: 68 mm · Height: 52 mm · Area of application: Tuning
CHF 59.90
swiing® ingenious 15 mm intake manifold long version | Sachs 503 2AL, 2BL
Total height: 80 mm · Manufacturer: swiing® ingenious parts · Camouflaged: No · Material: Aluminum · Thread type: M6x1 (standard thread) · Ø External connection: 20 mm · Total length: 70 mm · Ø inside: 15 mm · Height flange center hole: 70 mm · Mounting type: Screws · Area of application: Tuning · Number of fixing points: 2 pcs · Hole spacing inlet: 32 mm · Pony OEM number: A2176
CHF 59.90
GPO piston 40.94 mm | Sachs 502, 50/2, 50/3, 50/4
Manufacturer: GPO · Ø outside piston (A): 40.94 mm · Compression height (C): 28 mm · Curvature (D): 3.2 mm · Total piston height (E): 49.4 mm · Number of piston rings (F): 2 pcs · Nominal diameter: 41 mm · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Piston ring height: 1.5 mm · Thick piston ring: 1.8 mm · Ø piston pin (B): 12 mm · Weight piston kit: 86 g
CHF 39.90
swiing® ingenious 15 mm intake manifold short version | Sachs 503 2AL, 2BL
Manufacturer: swiing® ingenious parts · Material: Aluminum · Ø External connection: 20 mm · Ø inside: 15 mm · Area of application: Tuning · Hole spacing inlet: 32 mm · Total length: 50 mm · Thread type: M6x1 (standard thread) · Number of fixing points: 2 pcs · Alternative version of the Pony OEM number: A2177
CHF 49.90
Collection only possible with online purchase and appointment.
