
38 mm replacement piston / piston kit with two pieces of 2 mm rectangular piston rings with flank lock (FS) suitable for the windage-calibrated cylinder of Sachs 50/3 & 50/4 mopeds / mopeds with square intake.
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 images.
The piston kit contains piston pins, piston clips and piston rings.
Corresponding assembly tools, piston rings, piston pin retainers etc. can be found under accessories.
Original Sachs spare part number: 0290 058 025
| Ø outside piston (A) | 37.94 mm |
| Compression height (C) | 28 mm |
| Curvature (D) | 2.95 mm |
| Nominal diameter | 38 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 | 2 mm |
| Ø piston pin (B) | 12 mm |
| Weight piston kit | 73 g |
| Sachs | 50/3 50/4 - MLFB (2.6 PS), LKH (4.5 PS) |
Accessories & related products
38 mm cylinder kit square inlet | Sachs 50/3, 50/4
Nominal diameter: 38 mm · Material: Gray cast iron · Number of fixing points: 4 pcs · Surface: sandblasted · Displacement: 50 ccm · Crankshaft stroke: 42 mm · Thread inlet: M5x0.8 (standard thread) · Hole spacing inlet: 31 mm · Area of application: Tuning · Ø piston pin (B): 12 mm · Outlet type: Union nut · Thread outlet: M35x2 (standard thread) · Hole pattern [mm]: 51 x 40 · Camouflaged: No
CHF 129.90
GPO piston pin extractor Ø 10, 12, 14 mm
Material: Steel · Total length: 130 mm · Manufacturer: GPO · Number of components: 7 pcs · Surface: burnished · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Width across flats: 10 mm · Width across flats: 17 mm · Area of application: (Dis)assembly tool
CHF 19.90
Moped fans also bought
Magura cable clamp Ø 8 x 15 mm
Manufacturer: Magura · Material: Brass · Material: Steel · Surface: galvanized (blue) · Surface: nickel-plated · Width across flats: 7 mm · Ø outside: 8 mm · Ø Cable bushing: 2.3 mm · Drive: External hexagon · Drive: Slot · Ø Bundle: 6 mm · Screw head: Hexagon · Total length: 15 mm · Thread type: M6x1 (standard thread) · Thread length: 7 mm · Area of application: Standard
CHF 2.50
OMG fuel filter metal 6 mm (removable)
Material: Glass · Material: Metal · Color: gray · Color: transparent · Color: white · Total length: 40 mm · Total length: 63 mm · Ø inside: 3.45 mm · Manufacturer: OMG · Ø outside: 22 mm · Filter type: Plastic net · demountable: Yes · Ø fuel hose connection: 5.6 mm · Ø fuel hose connection: 6 mm
CHF 6.80
swiing® revival seal Float SRE, SRC, SRF, SRA
Material: Sealing paper · Ø inside: 41 mm · Manufacturer: swiing® revival parts · Ø outside: 45 mm · Component group Carburetor: Sealing, revising · Surface: blank · Carburetor type: SRA (1/11/31) Velux · Carburetor type: SRA (1/11/35) Velux · Carburetor type: SRC · Carburetor type: SRE · Carburetor type: SRF · Thickness: 1.5 mm · Pony OEM number: A4519 · Sachs OEM no.: 0950 128 000
CHF 2.80
Magura gas cable clamp / deco cable clamp Ø 5 x 6 mm
Manufacturer: Magura · Material: Brass · Material: Steel · Surface: nickel-plated · Number of components: 2 pcs · Ø outside: 5 mm · Ø Cable bushing: 1.6 mm · Drive: Slot · Screw head: Lens head · Total length: 6 mm · Thread type: M4x0.7 (standard thread) · Thread length: 4 mm
CHF 2.00
GPO ignition plate 90 mm Bosch / DUCATI
Manufacturer: GPO · Material: Aluminum · Number of cables: 3 pcs · Tension: 6 V · Ø outside: 90 mm · Cable length: 400 mm · Cable length: 500 mm · Ø inside: 18.5 mm · Ø bolt circle: 80 mm · Number of fixing points: 4 pcs · Area of application: Original · Area of application: Standard
CHF 74.90
Magura adjusting screw brake short
Manufacturer: Magura · Material: Brass · Surface: nickel-plated · Color: silver · Ø shaft: 6.1 mm · Drive: Knurled screw · Total length: 31 mm · Total length: 40 mm · Thread type: MF6x0.75 (fine pitch thread) · Ø External head: 9.15 mm · Thread length: 15 mm · Shank length: 6.9 mm
CHF 3.40










