40.0 mm piston with two rectangular piston rings with internal locking (IS) suitable for the swiing racing cylinder made of aluminum for Sachs 503 mopeds / mopeds.
The inner surfaces of the piston have been milled flat for optimum guiding of the connecting rod. The two hard chrome-plated piston rings have a positive effect on the service life.
In addition, the piston has two holes for optimum lubrication of the piston pin.
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.
| Manufacturer | swiing® ingenious parts |
| Ø outside piston (A) | 39.97 mm |
| Compression height (C) | 28 mm |
| Curvature (D) | 3.5 mm |
| Total piston height (E) | 54 mm |
| Number of piston rings (F) | 2 pcs |
| Nominal diameter | 40 mm |
| Piston ring mold | Rectangular ring |
| Piston ring impact | Internal fuse (IS) |
| Piston ring height | 1.5 mm |
| Thick piston ring | 1.7 mm |
| Ø piston pin (B) | 12 mm |
| Weight piston kit | 83 g |
| Sachs | 503 - AAL , ABL , 2AL / 2BL |
Ratings
Accessories & related products
GPO piston pin extractor Ø 10, 12, 14 mm
Manufacturer: GPO · Material: Steel · Surface: burnished · Area of application: (Dis)assembly tool · Width across flats: 10 mm · Width across flats: 17 mm · Total length: 130 mm · Number of components: 7 pcs · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm
CHF 19.90
Explore categories from Piston
Moped fans also bought
Hot 
BERU spark plug connector / 1 kΩ interference suppressed
Manufacturer: BERU · Material: Sheet metal (steel) · Color: silver · Spark plug socket: M4 · Cable available: No · Suppressed: Yes · Resistance: 1000 Ω · Subcategory: Spark plug connector · Ø cable: 5 mm · Ø cable: 7 mm · Pony OEM number: A2099 · Sachs OEM no.: 0265 100 00
CHF 8.80
Motorex engine oil (gear oil) manual 450 ml
Manufacturer: Motorex · Viscosity (SAE): 80W · Oil type: GL4 · Contents: 450 ml · Gearbox type: Foot control · Gearbox type: Manual gearshift · Temperature resistance (min.): -30 - 220 °C · Area of application: Gearbox lubrication with clutch
CHF 10.90
CHF 24.22/l
Manual indoor cable set
Ø Stranded wire: 1.2 mm · Ø Stranded wire: 1.25 mm · Ø Stranded wire: 1.5 mm · Ø Stranded wire: 1.8 mm · Manufacturer: Made in Germany · Material: Steel · Quantity: 4 pcs · Total length: 2200 mm · Nipple shape: Barrel (transverse) · Nipple shape: Cylinder · Nipple shape: Pears
CHF 9.90
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 · Total length: 66 mm · Mounting type: Plug connection clamped · Ø Inside entrance: 15 mm · Width: 50 mm · Ø Output inside: 15 mm · Height: 95 mm · Ø Air filter connection: 20 mm · Ø Internal connection: 20 mm · Ø fuel hose connection: 6 mm · Mixed oil connection: No · Vacuum connection: No · Choke control: Hand choke · Area of application: Tuning · Nozzle thread: M3.5x0.6 (standard thread) · Nozzle block: 2.17 · Nozzle size: 62 · Clamping screw torque (max.): 4 N/m
CHF 79.90
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
