41 mm racing cylinder with 55 cc, suitable for Sachs mopeds / mopeds with 503 2AL, AAL, 2BL, ABL CH engines.
Thanks to the additional holes for the cylinder head bolts as well as the two mounts for the blower cover, the cylinder can also be fitted to the Sachs 50/2 and 502 models, in which case the intake and exhaust accessories must be made by yourself.
The large displacement and the huge intake ensure plenty of torque.
The cylinder can be used on both Sachs 50/2 and Sachs 503 mopeds with the original cylinder head, but it should be noted that the pinch point at the narrowest point should be at least 1.5 mm. To ensure optimum operation and thus tease the maximum power out of the cylinder, we recommend using the 41 mm cylinder head from the accessories.
We also recommend using reinforced clutch springs so that the entire engine power can be transferred to the rear wheel. You can find these in the accessories section.
The BADASS 17 mm or 15 mm intake manifold is a perfect match for the cylinder and can be used with either a 15 mm Bing SRE or a 17 mm carburettor.
You can find the intake manifolds, as well as carburetors, in the accessories section.
Details:
- Cast iron reproduction cylinder with Ø 41.0 mm bore
- slot-controlled
- Ø 19 mm intake
- optimized Öoverflow channels
- improved timing
- no spindling of the engine housing necessary (Ø cylinder neck 45.0 mm)
- Ø external exhaust manifold connection: 26 mm
- incl. Ø 41 mm piston from the Italian manufacturer -GOL-
Differences to the GPO Pomodoro – replica cylinder:
- The BADASS 15 mm & 17 mm intake manifolds fit perfectly on the cylinder
- It is not possible to fit original or swiing® intake manifolds
- Thanks to the holes for the cylinder head and the blower cover, there is the possibility to mount the BADASS 15 mm & 17 mm intake manifold;the possibility of adapting the cylinder to a 50/2 or 502 engine
- Lower intake timing compared to the GPO Pomodoro
Installation instructions in German and the matching piston are included in the scope of delivery.
Attention: It is essential to replace the rubber silencers on 503 BL engines with aluminum silencers due to the increased performance in order to avoid fatigue fracture of the exhaust flange.
The aluminum silentblocs, matching gaskets, reinforced clutch springs and other add-on parts such as intake manifolds, carburettors, exhausts, etc. can be found in the accessories section.
Made by the BADASS brand.
Hole pattern [mm]: 59 x 40 · Manufacturer: BAD ASS · Material: Gray cast iron · Surface: sandblasted · Displacement: 55 ccm · Crankshaft stroke: 42 mm · Nominal diameter: 41 mm · Ø cylinder neck: 45 mm · Ø Outlet outside: 26 mm · Ø outlet inside: 23 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 · Number of fixing points: 4 pcs · Camouflaged: No · Area of application: Tuning
| Material | Gray cast iron |
| Surface | sandblasted |
| Nominal diameter | 41 mm |
| Manufacturer | BAD ASS |
| Number of fixing points | 4 pcs |
| Camouflaged | No |
| Displacement | 55 ccm |
| Crankshaft stroke | 42 mm |
| Ø cylinder neck | 45 mm |
| Ø Outlet outside | 26 mm |
| Area of application | Tuning |
| Ø Inlet inside | 19 mm |
| Ø piston pin (B) | 12 mm |
| Ø outlet inside | 23 mm |
| Thread inlet | M6x1 (standard thread) |
| Hole spacing inlet | 32 mm |
| Outlet type | clamped |
| Hole pattern [mm] | 40 x 60 / 37 x 37 |
| Sachs | 503 - AAL, ABL, 2AL / 2BL |
Accessories & related products
17 mm Bing SRF carburetor (replica)
Material: Aluminum · Nominal diameter: 17 mm · Total length: 78 mm · Width: 64 mm · Height: 117 mm · Mounting type: Plug connection clamped · Component group Carburetor: Carburetor complete · Carburetor type: SRF · Choke control: Hand choke · Nozzle thread: M4x0.7 (standard thread) · Area of application: Tuning · Ø fuel hose connection: 6 mm · Ø Internal connection: 23 mm · Ø Air filter connection: 60 mm · Ø Air filter connection: 64 mm · Mixed oil connection: No · Vacuum connection: No · Nozzle block: 2.xx · Clamping screw torque (max.): 3 N/m · Clamping screw torque (max.): 4 N/m
CHF 64.90
swiing® revival nozzle set M3.5 (58 - 68) Bing SRE, SRA, SRC, SRF
Material: Brass · Manufacturer: swiing® revival parts · Drive: Slot · Component group Carburetor: Spraying · Quantity: 6 pcs · Carburetor type: SRA (1/11/31) Velux · Carburetor type: SRA (1/11/35) Velux · Carburetor type: SRC · Carburetor type: SRE · Carburetor type: SRF · Total length: 6 mm · Nozzle type: Main nozzle · Nozzle thread: M3.5x0.6 (standard thread) · Nozzle size: 58 · Nozzle size: 60 · Nozzle size: 62 · Nozzle size: 64 · Nozzle size: 66 · Nozzle size: 68
CHF 15.90
swiing® ingenious 15mm tuning set carburetor HG short | Sachs 503
Manufacturer: swiing® ingenious parts · Camouflaged: Yes · Component group Carburetor: Carburetor complete · Carburetor type: SRE · Nominal diameter: 15 mm · Ø Internal connection: 20 mm · Hole spacing inlet: 32 mm · Ø Inside entrance: 15 mm · Mounting type: Flange · Mounting type: Plug connection clamped · Ø Output inside: 15 mm · Ø Air filter connection: 20 mm · Area of application: Tuning · Ø fuel hose connection: 6 mm · Choke control: Hand choke · Nozzle thread: M3.5x0.6 (standard thread) · Nozzle size: 62 · Clamping screw torque (max.): 4 N/m
CHF 159.90
swiing® ingenious 15 mm carburetor tuning camouflaged | Sachs 503
Total length: 66 mm · Manufacturer: swiing® ingenious parts · Area of application: Tuning · Camouflaged: Yes · Component group Carburetor: Carburetor complete · Material: Aluminum · Carburetor type: SRE · Choke control: Hand choke · Nominal diameter: 15 mm · Nozzle thread: M3.5x0.6 (standard thread) · Ø fuel hose connection: 6 mm · Nozzle size: 62 · Ø Inside entrance: 15 mm · Ø Internal connection: 20 mm · Width: 50 mm · Ø Output inside: 15 mm · Height: 95 mm · Ø Air filter connection: 20 mm · Mixed oil connection: No · Mounting type: Plug connection clamped · Vacuum connection: No · Nozzle block: 2.17 · Clamping screw torque (max.): 4 N/m
CHF 79.90
swiing® revival air filter Racing | Sachs 503
Material: Plastic · Manufacturer: swiing® revival parts · Height: 52 mm · Width: 68 mm · Camouflaged: No · Filter type: Racing screen · Color: black · Total length: 165 mm · Ø Internal connection: 20 mm · Area of application: Tuning · Mounting type: Plug connection clamped
CHF 53.90
CHF 59.90
swiing® revival cylinder base gasket 0.3 mm | Sachs 503
Material: Oiled paper · Nominal diameter: 45 mm · Thickness: 0.3 mm · Place of use: Cylinder base · Manufacturer: swiing® revival parts · Ø inside: 45 mm · Area of application: Standard · Ø cylinder: 38 - 40 mm · Hole pattern [mm]: 60 x 40
CHF 3.40
swiing resonance exhaust set Ø 28 / 70 mm | Sachs 503
Manufacturer: swiing · Material: Steel · Surface: chrome-plated · Ø outside: 70 mm · Total length: 730 mm · Color: Chrome · Ø Internal connection: 28 mm · Exhaust type: Cigar · Mounting type: Screwed clamp · Flame tube attachment: Plug connection clamped
CHF 125.90
CHF 139.90
swiing® revival silent blocks Alu Racing | Sachs 503 / 504 / 505 / 535
Material: Aluminum · Surface: anodized · Nominal diameter inside: 8.5 mm · Total length: 13 mm · Manufacturer: swiing® revival parts · Ø outside: 21.95 mm · Ø inside: 8.3 mm · Ø Bundle: 26 mm · Alternative version of the Pony OEM number: A4286 · Alternative version of the Sachs OEM number: 0251 121 000
CHF 23.90
GPO piston 40.94 mm | Sachs 502, 50/2, 50/3, 50/4
Manufacturer: GPO · Nominal diameter: 41 mm · Thick piston ring: 1.8 mm · 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 · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Ø piston pin (B): 12 mm · Piston ring height: 1.5 mm · Piston weight: 86 g
CHF 39.90
Hot 
BAD ASS intake manifold 17 mm SRF short version | Sachs 503 2AL, 2BL
Ø inside: 17 mm · Manufacturer: BAD ASS · Material: Aluminum · Camouflaged: No · Area of application: Tuning · Ø External connection: 23 mm · Mounting type: Screws · Hole spacing inlet: 32 mm · Number of fixing points: 3 pcs · Total height: 56.5 mm · Height flange center hole: 45 mm · Total length: 54 mm · Thread type: M6x1 (standard thread)
CHF 74.90
Hot
swiing® ingenious 17 mm SRF carburetor tuning camouflaged | Sachs 503, Puch Velux
Material: Aluminum · Manufacturer: swiing® ingenious parts · Nominal diameter: 17 mm · Height: 89 mm · Height: 112 mm · Width: 47 mm · Camouflaged: Yes · Component group Carburetor: Carburetor complete · Carburetor type: SRF · Choke control: Hand choke · Total length: 61.5 mm · Nozzle thread: M3.5x0.6 (standard thread) · Ø fuel hose connection: 5 mm · Nozzle size: 74 · Ø Inside entrance: 17 mm · Ø Internal connection: 23 mm · Area of application: Tuning · Ø Output inside: 17.1 mm · Ø Air filter connection: 23 mm · Mixed oil connection: No · Mounting type: Plug connection clamped · Vacuum connection: No · Nozzle block: 2.2 · Clamping screw torque (max.): 3 N/m · Clamping screw torque (max.): 4 N/m
CHF 119.90
BAD ASS 17 mm intake manifold (short) Bing SRE | Sachs 503 2AL/2BL
Manufacturer: BAD ASS · Camouflaged: No · Material: Aluminum · Ø inside: 17.8 mm · Ø External connection: 20 mm · Mounting type: Stud bolt · Hole spacing inlet: 32 mm · Number of fixing points: 2 pcs · Total height: 55 mm · Height flange center hole: 45 mm · Total length: 65 mm · Area of application: Tuning
CHF 74.90
GPO cylinder gasket set BAD ASS Pandora 41 & 43 mm | Sachs 503, 50/2, 502
Manufacturer: GPO · Material: Oiled paper · Number of components: 2 pcs · Thickness: 0.3 mm · Thickness: 1 mm · Ø cylinder: 41 mm · Ø cylinder: 43 mm · Hole spacing inlet: 32 mm · Hole pattern [mm]: 60 x 40 mm / 37 x 37 mm · Area of application: Tuning
CHF 14.50
Moped fans also bought
BING O-ring Bing SRE & 85, Ø 20 mm
Surface: raw · Manufacturer: BING · Place of use: Carburetor · Color: black · Material: Rubber · Cord thickness: 1.4 mm · Ø inside: 17.2 mm · Number of components: 1 pcs · Ø outside: 20 mm · Area of application: Standard · Pony OEM number: A4281 · Sachs OEM no.: 0250 160 101
CHF 2.90
NSK BO15 shoulder ball bearing 15/40/10 (A4502)
Bearing type: Shoulder bearing · Stock number: BO15 · Inner ring width: 10 mm · Manufacturer: NSK · Bearing cage: Brass cage ball-guided · Area of application: Standard · Material: Brass · Material: Steel · Surface: blank · Ø inside: 15 mm · Ø outside: 40 mm · Width: 10 mm · Ball bearing closed: No · Pony OEM number: A4502 · Sachs OEM no.: 0932 007 001
CHF 24.90
swiing® ingenious 15 mm carburetor tuning camouflaged | Sachs 503
Total length: 66 mm · Manufacturer: swiing® ingenious parts · Area of application: Tuning · Camouflaged: Yes · Component group Carburetor: Carburetor complete · Material: Aluminum · Carburetor type: SRE · Choke control: Hand choke · Nominal diameter: 15 mm · Nozzle thread: M3.5x0.6 (standard thread) · Ø fuel hose connection: 6 mm · Nozzle size: 62 · Ø Inside entrance: 15 mm · Ø Internal connection: 20 mm · Width: 50 mm · Ø Output inside: 15 mm · Height: 95 mm · Ø Air filter connection: 20 mm · Mixed oil connection: No · Mounting type: Plug connection clamped · Vacuum connection: No · Nozzle block: 2.17 · Clamping screw torque (max.): 4 N/m
CHF 79.90
Large gasket set with shaft seals Engine | Sachs 503
Material: Aluminum · Material: Copper · Material: Fiber · Material: Sealing carton · Material: Sealing paper · Number of components: 14 pcs · Area of application: Standard · Ø outlet inside: 13.3 mm · Hole spacing inlet: 32 mm · Hole pattern [mm]: 60 x 40
CHF 39.90
Hot
BAD ASS intake manifold 17 mm SRF short version | Sachs 503 2AL, 2BL
Ø inside: 17 mm · Manufacturer: BAD ASS · Material: Aluminum · Camouflaged: No · Area of application: Tuning · Ø External connection: 23 mm · Mounting type: Screws · Hole spacing inlet: 32 mm · Number of fixing points: 3 pcs · Total height: 56.5 mm · Height flange center hole: 45 mm · Total length: 54 mm · Thread type: M6x1 (standard thread)
CHF 74.90
BAD ASS 17 mm intake manifold (short) Bing SRE | Sachs 503 2AL/2BL
Manufacturer: BAD ASS · Camouflaged: No · Material: Aluminum · Ø inside: 17.8 mm · Ø External connection: 20 mm · Mounting type: Stud bolt · Hole spacing inlet: 32 mm · Number of fixing points: 2 pcs · Total height: 55 mm · Height flange center hole: 45 mm · Total length: 65 mm · Area of application: Tuning
CHF 74.90
GPO cylinder gasket set BAD ASS Pandora 41 & 43 mm | Sachs 503, 50/2, 502
Manufacturer: GPO · Material: Oiled paper · Number of components: 2 pcs · Thickness: 0.3 mm · Thickness: 1 mm · Ø cylinder: 41 mm · Ø cylinder: 43 mm · Hole spacing inlet: 32 mm · Hole pattern [mm]: 60 x 40 mm / 37 x 37 mm · Area of application: Tuning
CHF 14.50
Collection only possible with online purchase and appointment.
