41.0 mm piston with two 1.5 mm rectangular piston rings with internal fuse (IS) suitable for Sachs mopeds 502, 50/2, 50/3 and 50/4 cylinders.
This replacement piston is suitable for the GPO Pomodoro 41 mm, the 41 mm Wummer and the Badass Pandora 41 mm racing kit, among others.
The detailed dimensions of the piston according to the technical drawing can be found in the details. You can also find out about the relevant piston rings, their stems and locking types on the legend in the pictures.
| Nominal diameter | 41 mm |
| 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 |
| 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 |
| Sachs | 50 (Fahrtwind, 1.25 / 1.5 hp, DE) 502 (Saxonette) - AL , AML 50/2 - L CH (0.8 PS) , ML CH (0.8 PS) , MB (2.6 PS) , MLB (2.6 PS) 50/3 50/4 - MLFB (2.6 PS) , LKH (4.5 PS) 503 - AAL , ABL , 2AL / 2BL |
Ratings
Accessories & related products
BAD ASS Ø 41 mm "Pandora" tuning cylinder | Sachs 503, 50/2, 502
Nominal diameter: 41 mm · Manufacturer: BAD ASS · Material: Gray cast iron · Surface: sandblasted · Displacement: 55 ccm · Crankshaft stroke: 42 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 · Hole pattern [mm]: 40 x 60 / 37 x 37 · Camouflaged: No · Area of application: Tuning
264,60 EUR
Explore categories from Piston
Moped fans also bought
swiing® revival stud bolt M5 x 23 inlet (diaphragm) 10.9 | Sachs 50/2 (A3700)
Manufacturer: swiing® revival parts · Material: Steel · Surface: galvanized (blue) · Diameter: 4.9 mm · Total length: 23 mm · Thread length: 6 mm · Thread length: 12 mm · Thread type: M5x0.8 (standard thread) · Area of application: Standard · Pony OEM number: A3700 · Sachs OEM no.: 0640 016 101 · Sachs OEM no.: 0640 016 102
2,10 EUR
swiing® revival gasket set cylinder diaphragm version | Sachs 50/2
Manufacturer: swiing® revival parts · Material: Copper · Material: Sealing paper · Ø cylinder: 38 mm · Ø outlet inside: 28 mm · Hole spacing inlet: 31 mm · Hole spacing inlet: 67 - 31 mm · Number of components: 5 pcs · Hole pattern [mm]: 60 x 40 mm · Area of application: Standard
15,70 EUR
swiing® ingenious 41 mm cylinder kit tuning diaphragm | Sachs 50/2 (CH)
Nominal diameter: 41 mm · Manufacturer: GPO · Manufacturer: swiing® ingenious parts · Material: Gray cast iron · Surface: sandblasted · Displacement: 55 ccm · Crankshaft stroke: 42 mm · Ø cylinder neck: 44 mm · Ø Outlet outside: 35 mm · Ø outlet inside: 26 mm · Ø Inlet inside: 19 mm · Inlet window: 57.5 x 19 · Thread inlet: M5x0.8 (standard thread) · Hole spacing inlet: 68 mm · Ø piston pin (B): 12 mm · Outlet type: Union nut · Thread outlet: M35x2 (standard thread) · Number of fixing points: 4 pcs · Hole pattern [mm]: 60 x 40 / 37 x 37 · Camouflaged: Yes · Area of application: Tuning
194,00 EUR
Not in stock
GPO 41 mm "Pomodoro" cylinder kit | Sachs 503
Nominal diameter: 41 mm · Manufacturer: GPO · Material: Gray cast iron · Displacement: 57 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
211,70 EUR
Not in stock
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
