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
| Nominal diameter | 41 mm |
| Manufacturer | BAD ASS |
| Material | Gray cast iron |
| Surface | sandblasted |
| Displacement | 55 ccm |
| Crankshaft stroke | 42 mm |
| Area of application | Tuning |
| Ø cylinder neck | 45 mm |
| Ø Outlet outside | 26 mm |
| Ø outlet inside | 23 mm |
| Ø Inlet inside | 19 mm |
| Number of fixing points | 4 pcs |
| 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 |
| Camouflaged | No |
| Sachs | 503 - AAL, ABL, 2AL / 2BL |
Accessories & related products
17 mm Bing SRF carburetor (replica)
Width: 64 mm · Height: 117 mm · Material: Aluminum · Area of application: Tuning · Component group Carburetor: Carburetor complete · Nominal diameter: 17 mm · Carburetor type: SRF · Choke control: Hand choke · Nozzle thread: M4x0.7 (standard thread) · Ø fuel hose connection: 6 mm · Mounting type: Plug connection clamped · Ø Internal connection: 23 mm · Ø Air filter connection: 60 mm · Ø Air filter connection: 64 mm · Total length: 78 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
76,10 EUR
swiing® revival nozzle set M3.5 (58 - 68) Bing SRE, SRA, SRC, SRF
Manufacturer: swiing® revival parts · Material: Brass · Quantity: 6 pcs · Component group Carburetor: Spraying · Carburetor type: SRA (1/11/31) Velux · Carburetor type: SRA (1/11/35) Velux · Carburetor type: SRC · Carburetor type: SRE · Carburetor type: SRF · Nozzle type: Main nozzle · Drive: Slot · 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 · Total length: 6 mm
18,60 EUR
swiing® ingenious 15mm tuning set carburetor HG short | Sachs 503
Manufacturer: swiing® ingenious parts · Area of application: Tuning · Component group Carburetor: Carburetor complete · Nominal diameter: 15 mm · Carburetor type: SRE · Choke control: Hand choke · Hole spacing inlet: 32 mm · Nozzle thread: M3.5x0.6 (standard thread) · Ø fuel hose connection: 6 mm · Mounting type: Flange · Mounting type: Plug connection clamped · Nozzle size: 62 · Ø Inside entrance: 15 mm · Ø Internal connection: 20 mm · Ø Output inside: 15 mm · Ø Air filter connection: 20 mm · Camouflaged: Yes · Clamping screw torque (max.): 4 N/m
187,40 EUR
swiing® ingenious 15 mm carburetor tuning camouflaged | Sachs 503
Width: 50 mm · Height: 95 mm · Manufacturer: swiing® ingenious parts · Material: Aluminum · Area of application: Tuning · Component group Carburetor: Carburetor complete · Nominal diameter: 15 mm · Carburetor type: SRE · Choke control: Hand choke · Nozzle thread: M3.5x0.6 (standard thread) · Ø fuel hose connection: 6 mm · Mounting type: Plug connection clamped · Nozzle size: 62 · Ø Inside entrance: 15 mm · Ø Internal connection: 20 mm · Ø Output inside: 15 mm · Ø Air filter connection: 20 mm · Total length: 66 mm · Mixed oil connection: No · Vacuum connection: No · Nozzle block: 2.17 · Camouflaged: Yes · Clamping screw torque (max.): 4 N/m
93,60 EUR
swiing® revival air filter Racing | Sachs 503
Height: 52 mm · Width: 68 mm · Manufacturer: swiing® revival parts · Material: Plastic · Area of application: Tuning · Color: black · Filter type: Racing screen · Mounting type: Plug connection clamped · Ø Internal connection: 20 mm · Total length: 165 mm · Camouflaged: No
70,20 EUR
swiing® revival cylinder base gasket 0.3 mm | Sachs 503
Ø inside: 45 mm · Manufacturer: swiing® revival parts · Place of use: Cylinder base · Material: Oiled paper · Area of application: Standard · Nominal diameter: 45 mm · Thickness: 0.3 mm · Ø cylinder: 38 - 40 mm · Hole pattern [mm]: 60 x 40
4,00 EUR
swiing® ingenious resonance exhaust set Ø 28 / 70 mm | Sachs 503
Ø outside: 70 mm · Manufacturer: swiing® ingenious parts · Material: Steel · Surface: chrome-plated · Color: Chrome · Mounting type: Screwed clamp · Ø Internal connection: 28 mm · Exhaust type: Cigar · Total length: 730 mm · Flame tube attachment: Plug connection clamped
164,00 EUR
swiing® revival silent blocks Alu Racing | Sachs 503 / 504 / 505 / 535
Ø inside: 8.3 mm · Ø outside: 21.95 mm · Manufacturer: swiing® revival parts · Material: Aluminum · Surface: anodized · Nominal diameter inside: 8.5 mm · Ø Bundle: 26 mm · Total length: 13 mm · Alternative version of the Pony OEM number: A4286 · Alternative version of the Sachs OEM number: 0251 121 000
28,00 EUR
GPO piston 40.94 mm | Sachs 502, 50/2, 50/3, 50/4
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 · Piston weight: 86 g
46,80 EUR
Hot 
BAD ASS intake manifold 17 mm SRF short version | Sachs 503 2AL, 2BL
Ø inside: 17 mm · Manufacturer: BAD ASS · Thread type: M6x1 (standard thread) · Material: Aluminum · Area of application: Tuning · Hole spacing inlet: 32 mm · Total length: 54 mm · Mounting type: Screws · Number of fixing points: 3 pcs · Height flange center hole: 45 mm · Ø External connection: 23 mm · Camouflaged: No · Total height: 56.5 mm
87,80 EUR
- 10 %
Hot
swiing® ingenious 17 mm SRF carburetor tuning camouflaged | Sachs 503, Puch Velux
Width: 47 mm · Height: 89 mm · Height: 112 mm · Manufacturer: swiing® ingenious parts · Material: Aluminum · Area of application: Tuning · Component group Carburetor: Carburetor complete · Nominal diameter: 17 mm · Carburetor type: SRF · Choke control: Hand choke · Nozzle thread: M3.5x0.6 (standard thread) · Ø fuel hose connection: 5 mm · Mounting type: Plug connection clamped · Nozzle size: 74 · Ø Inside entrance: 17 mm · Ø Internal connection: 23 mm · Ø Output inside: 17.1 mm · Ø Air filter connection: 23 mm · Total length: 61.5 mm · Mixed oil connection: No · Vacuum connection: No · Nozzle block: 2.2 · Camouflaged: Yes · Clamping screw torque (max.): 3 N/m · Clamping screw torque (max.): 4 N/m
126,40 EUR
140,50 EUR
BAD ASS 17 mm intake manifold (short) Bing SRE | Sachs 503 2AL/2BL
Ø inside: 17.8 mm · Manufacturer: BAD ASS · Material: Aluminum · Area of application: Tuning · Hole spacing inlet: 32 mm · Total length: 65 mm · Mounting type: Stud bolt · Number of fixing points: 2 pcs · Height flange center hole: 45 mm · Ø External connection: 20 mm · Camouflaged: No · Total height: 55 mm
87,80 EUR
GPO cylinder gasket set BAD ASS Pandora 41 & 43 mm | Sachs 503, 50/2, 502
Manufacturer: GPO · Material: Oiled paper · Area of application: Tuning · Thickness: 0.3 mm · Thickness: 1 mm · Number of components: 2 pcs · Ø cylinder: 41 mm · Ø cylinder: 43 mm · Hole spacing inlet: 32 mm · Hole pattern [mm]: 60 x 40 mm / 37 x 37 mm
17,00 EUR
Moped fans also bought
BING O-ring Bing SRE & 85, Ø 20 mm
Ø inside: 17.2 mm · Ø outside: 20 mm · Manufacturer: BING · Place of use: Carburetor · Material: Rubber · Area of application: Standard · Surface: raw · Color: black · Number of components: 1 pcs · Cord thickness: 1.4 mm · Pony OEM number: A4281 · Sachs OEM no.: 0250 160 101
3,40 EUR
NSK BO15 shoulder ball bearing 15/40/10 (A4502)
Width: 10 mm · Bearing cage: Brass cage ball-guided · Ø inside: 15 mm · Stock number: BO15 · Ø outside: 40 mm · Inner ring width: 10 mm · Manufacturer: NSK · Material: Brass · Area of application: Standard · Material: Steel · Surface: blank · Bearing type: Shoulder bearing · Ball bearing closed: No · Pony OEM number: A4502 · Sachs OEM no.: 0932 007 001
29,20 EUR
swiing® ingenious 15 mm carburetor tuning camouflaged | Sachs 503
Width: 50 mm · Height: 95 mm · Manufacturer: swiing® ingenious parts · Material: Aluminum · Area of application: Tuning · Component group Carburetor: Carburetor complete · Nominal diameter: 15 mm · Carburetor type: SRE · Choke control: Hand choke · Nozzle thread: M3.5x0.6 (standard thread) · Ø fuel hose connection: 6 mm · Mounting type: Plug connection clamped · Nozzle size: 62 · Ø Inside entrance: 15 mm · Ø Internal connection: 20 mm · Ø Output inside: 15 mm · Ø Air filter connection: 20 mm · Total length: 66 mm · Mixed oil connection: No · Vacuum connection: No · Nozzle block: 2.17 · Camouflaged: Yes · Clamping screw torque (max.): 4 N/m
93,60 EUR
Large gasket set with shaft seals Engine | Sachs 503
Material: Aluminum · Material: Copper · Material: Fiber · Material: Sealing carton · Material: Sealing paper · Area of application: Standard · Number of components: 14 pcs · Hole spacing inlet: 32 mm · Ø outlet inside: 13.3 mm · Hole pattern [mm]: 60 x 40
46,80 EUR
Hot
BAD ASS intake manifold 17 mm SRF short version | Sachs 503 2AL, 2BL
Ø inside: 17 mm · Manufacturer: BAD ASS · Thread type: M6x1 (standard thread) · Material: Aluminum · Area of application: Tuning · Hole spacing inlet: 32 mm · Total length: 54 mm · Mounting type: Screws · Number of fixing points: 3 pcs · Height flange center hole: 45 mm · Ø External connection: 23 mm · Camouflaged: No · Total height: 56.5 mm
87,80 EUR
BAD ASS 17 mm intake manifold (short) Bing SRE | Sachs 503 2AL/2BL
Ø inside: 17.8 mm · Manufacturer: BAD ASS · Material: Aluminum · Area of application: Tuning · Hole spacing inlet: 32 mm · Total length: 65 mm · Mounting type: Stud bolt · Number of fixing points: 2 pcs · Height flange center hole: 45 mm · Ø External connection: 20 mm · Camouflaged: No · Total height: 55 mm
87,80 EUR
GPO cylinder gasket set BAD ASS Pandora 41 & 43 mm | Sachs 503, 50/2, 502
Manufacturer: GPO · Material: Oiled paper · Area of application: Tuning · Thickness: 0.3 mm · Thickness: 1 mm · Number of components: 2 pcs · Ø cylinder: 41 mm · Ø cylinder: 43 mm · Hole spacing inlet: 32 mm · Hole pattern [mm]: 60 x 40 mm / 37 x 37 mm
17,00 EUR
Collection only possible with online purchase and appointment.
