38 mm replacement piston / piston kit with two pieces of 2 mm rectangular piston rings with flank lock (FS) suitable for the windage-cooled 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 pictures.
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
| Nominal diameter | 38 mm |
| Ø outside piston (A) | 37.94 mm |
| Compression height (C) | 28 mm |
| Curvature (D) | 2.95 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 |
| Piston weight | 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
Camouflaged: No · Material: Gray cast iron · Area of application: Tuning · Surface: sandblasted · Nominal diameter: 38 mm · Crankshaft stroke: 42 mm · Displacement: 50 ccm · Ø piston pin (B): 12 mm · Thread inlet: M5x0.8 (standard thread) · Hole pattern [mm]: 51 x 40 · Outlet type: Union nut · Number of fixing points: 4 pcs · Thread outlet: M35x2 (standard thread) · Hole spacing inlet: 31 mm
CHF 129.90
GPO piston pin extractor Ø 10, 12, 14 mm
Manufacturer: GPO · Total length: 130 mm · Material: Steel · Surface: burnished · Number of components: 7 pcs · Area of application: (Dis)assembly tool · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Width across flats SW: 10 mm · Width across flats SW: 17 mm
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 · Total length: 15 mm · Ø Cable bushing: 2.3 mm · Drive: External hexagon · Drive: Slot · Screw head: Hexagon · Ø Bundle: 6 mm · Width across flats SW: 7 mm · Area of application: Standard · Ø outside: 8 mm · Thread type: M6x1 (standard thread) · Thread length: 7 mm
CHF 2.50
OMG fuel filter metal 6 mm (removable)
Ø inside: 3.45 mm · Ø outside: 22 mm · Total length: 40 mm · Total length: 63 mm · Manufacturer: OMG · Material: Glass · Material: Metal · Filter type: Plastic net · Color: gray · Color: transparent · Color: white · 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 · Surface: blank · Manufacturer: swiing® revival parts · Component group Carburetor: Sealing, revising · Carburetor type: SRA (1/11/31) Velux · Carburetor type: SRA (1/11/35) Velux · Carburetor type: SRC · Carburetor type: SRE · Carburetor type: SRF · Ø inside: 41 mm · Thickness: 1.5 mm · Ø outside: 45 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
Material: Brass · Manufacturer: Magura · Material: Steel · Surface: nickel-plated · Number of components: 2 pcs · Ø outside: 5 mm · Total length: 6 mm · Ø Cable bushing: 1.6 mm · Drive: Slot · Screw head: Lens head · Thread type: M4x0.7 (standard thread) · Thread length: 4 mm
CHF 2.00
GPO ignition plate 90 mm Bosch / DUCATI
Manufacturer: GPO · Material: Aluminum · Tension: 6 V · Ø inside: 18.5 mm · Ø outside: 90 mm · Number of cables: 3 pcs · Number of fixing points: 4 pcs · Area of application: Original · Area of application: Standard · Cable length: 400 mm · Cable length: 500 mm · Ø bolt circle: 80 mm
CHF 74.90
Magura adjusting screw brake short
Manufacturer: Magura · Material: Brass · Surface: nickel-plated · Color: silver · Ø shaft: 6.1 mm · Shank length: 6.9 mm · Total length: 31 mm · Total length: 40 mm · Ø External head: 9.15 mm · Drive: Knurled screw · Thread type: MF6x0.75 (fine pitch thread) · Thread length: 15 mm
CHF 3.40
Collection only possible with online purchase and appointment.
