Slotted, blower-cooled 38 mm (50 cc) tuning cylinder, suitable for Swiss Sachs 50/2 (502) engines, which were installed on Alpa, Caravelle, Comet, DKW, Eiger, Göricke, Hercules, Prior, Pony Junior, Rico, Rixe or Walco mopeds / mopeds, among others.
Chrigi from Gfellers-Zweirad was personally involved in the development of the «Wummer» racing kit and tested the cylinder intensively. His feedback was directly integrated into the design. The result is a cylinder that impresses with its powerful performance, particularly in the mid rev range. The focus is not on top performance, but on smooth, high-torque power delivery.
Manufacturer: GPO · Material: Gray cast iron · Surface: raw · Displacement: 50 ccm · Crankshaft stroke: 42 mm · Nominal diameter: 38 mm · Ø cylinder neck: 44.8 mm · Ø Outlet outside: 40 mm
Manufacturer: GPO · Nominal diameter: 38 mm · Ø outside piston (A): 37.94 mm · Ø piston pin (B): 12 mm · Compression height (C): 27.5 mm · Curvature (D): 3.5 mm · Total piston height (E): 53 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring height: 1.7 mm · Thick piston ring: 2 mm · Alternative version of the Sachs OEM number: 0290 058 025 · Weight piston kit: 78 g
Hole pattern [mm]: 60 x 40 · Material: Sealing paper · Place of use: Cylinder base · Thickness: 0.25 mm · Area of application: Standard · Pony OEM number: A1848 · Sachs OEM no.: 0250 113 100
Place of use: Admission · Thickness: 2.6 mm · Hole spacing inlet: 30 mm
Manufacturer: swiing® revival parts · Material: Steel · Surface: galvanized (blue) · Thread type: M5x0.8 (standard thread) · Total length: 26 mm · Thread length: 14 mm, 7 mm · Width across flats: 8 mm · Strength class: 8, 10.9 · Drive: External hexagon
| Manufacturer | GPO |
| Material | Gray cast iron |
| Displacement | 50 ccm |
| Crankshaft stroke | 42 mm |
| Nominal diameter | 38 mm |
| Ø cylinder neck | 44.8 mm |
| Ø Outlet outside | 40 mm |
| Number of fixing points | 4 pcs |
| Inlet window | 18 x 15 |
| Ø outlet inside | 30 mm |
| Thread inlet | M5x0.8 (standard thread) |
| Hole pattern [mm] | 60 x 40 |
| Ø piston pin (B) | 12 mm |
| Hole spacing inlet | 32 mm |
| Outlet type | Union nut |
| Decompressor | No |
| Camouflaged | Yes |
| Sachs | 502 (Saxonette) - AL, AML 50/2 - L CH (0.8 PS), ML CH (0.8 PS), MB (2.6 PS), MLB (2.6 PS) |
Ratings
Accessories & related products
swiing® revival carburetor 17 mm Bing SSB 1/17/69
Manufacturer: swiing® revival parts · Material: Aluminum · Area of application: Standard · Area of application: Tuning · Component group Carburetor: Carburetor complete · Carburetor type: SSB · Choke control: without choke · Nominal diameter: 17 mm · Ø fuel hose connection: 6 mm · Mounting type: Flange · Nozzle size: 76 · Total length: 132 mm · Mixed oil connection: No · Hole spacing inlet: 31 mm · Width: 85 mm · Vacuum connection: No · Height: 100 mm · Camouflaged: No
EUR 151.20
swiing® revival carburetor 13 mm Bing SSB 1/13/4
Manufacturer: swiing® revival parts · Material: Aluminum · Component group Carburetor: Carburetor complete · Carburetor type: SSB · Choke control: without choke · Nominal diameter: 13 mm · Ø fuel hose connection: 6 mm · Mounting type: Flange · Nozzle size: 75 · Total length: 132 mm · Width: 87 mm · Height: 85 mm · Mixed oil connection: No · Hole spacing inlet: 31 mm · Vacuum connection: No · Camouflaged: No · Area of application: Standard · Area of application: Tuning
EUR 151.20
Not in stock
swiing® revival flame tube 28 mm chrome | Sachs 50/2, 50/3
Manufacturer: swiing® revival parts · Material: Steel · Surface: chrome-plated · Color: Chrome · Ø outside: 28 mm · Ø inside: 25.7 mm · Mounting type: Union nut · Total length: 368 mm · Ø External connection: 32.25 mm · Sachs OEM no.: P5005
EUR 53.50
GPO Ø 41 mm "Wummer" cylinder kit (slotted) | Sachs 50/2 (CH)
Nominal diameter: 41 mm · Manufacturer: GPO · Material: Gray cast iron · Displacement: 55 ccm · Crankshaft stroke: 42 mm · Ø cylinder neck: 44.8 mm · Ø Outlet outside: 40 mm · Ø outlet inside: 30 mm · Inlet window: 18 x 15 · Thread inlet: M5x0.8 (standard thread) · Hole spacing inlet: 32 mm · Ø piston pin (B): 12 mm · Outlet type: Union nut · Number of fixing points: 4 pcs · Hole pattern [mm]: 60 x 40 · Decompressor: No · Camouflaged: Yes
EUR 190.50
Moped fans also bought
GPO air filter insert | Sachs 503 AB/ABL, 504 CH (A4336)
Manufacturer: GPO · Material: Paper · Color: black · Color: white · Width: 58 mm · Height: 62 mm · Ø outside: 48.7 mm · Ø inside: 15.5 mm · Total length: 58 mm · Camouflaged: No · Area of application: Standard · Pony OEM number: A4336 · Sachs OEM no.: 0225 010 100
EUR 10.60
GPO piston 38 mm | Sachs 50/2, 50/3, 50/4 fan-cooled
Nominal diameter: 38 mm · Manufacturer: GPO · Thick piston ring: 2 mm · Ø outside piston (A): 37.94 mm · Compression height (C): 27.5 mm · Curvature (D): 3.5 mm · Total piston height (E): 53 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring height: 1.7 mm · Ø piston pin (B): 12 mm · Weight piston kit: 78 g · Alternative version of the Sachs OEM number: 0290 058 025
EUR 40.40
Air filter 17 mm Bing SSB | Sachs 50/3, 50/4
Material: Plastic · Material: Steel · Color: gray · Angle: 90 ° · Width: 50 mm · Height: 85 mm · Filter type: Box · Ø outside: 29 mm · Total length: 195 mm · Mounting type: Nuts & bolts · Ø Internal connection: 25 mm · Area of application: Standard
EUR 71.40
Air filter insert Ø 26 mm Racing | Sachs 503 AB/ABL, 504 CH (A4336)
Material: Paper · Color: black · Color: yellow · Ø outside: 49 mm · Ø inside: 28 mm · Total length: 58 mm · Width: 58 mm · Height: 64.2 mm · Camouflaged: No · Area of application: Tuning · Alternative version of the Pony OEM number: A4336 · Alternative version of the Sachs OEM number: 0225 010 100
EUR 15.40
swiing® revival carburetor 13 mm Bing SSB 1/13/4
Manufacturer: swiing® revival parts · Material: Aluminum · Component group Carburetor: Carburetor complete · Carburetor type: SSB · Choke control: without choke · Nominal diameter: 13 mm · Ø fuel hose connection: 6 mm · Mounting type: Flange · Nozzle size: 75 · Total length: 132 mm · Width: 87 mm · Height: 85 mm · Mixed oil connection: No · Hole spacing inlet: 31 mm · Vacuum connection: No · Camouflaged: No · Area of application: Standard · Area of application: Tuning
EUR 151.20
Not in stock
swiing® revival stud bolt set M5x26 inlet (strength 10.9) | Sachs 50/2, 50/2, 50/3
Manufacturer: swiing® revival parts · Material: Steel · Surface: galvanized (blue) · Thread type: M5x0.8 (standard thread) · Drive: External hexagon · Total length: 26 mm · Thread length: 7 mm · Thread length: 14 mm · Strength class: 8 · Strength class: 10.9 · Width across flats: 8 mm
EUR 6.80
Collection only possible with online purchase and appointment.
