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 |
| Ø piston pin (B) | 12 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 |
| 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
Nominal diameter: 38 mm · Material: Gray cast iron · Camouflaged: No · Surface: sandblasted · Crankshaft stroke: 42 mm · Displacement: 50 ccm · Hole spacing inlet: 31 mm · 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) · Area of application: Tuning
EUR 154.20
GPO piston pin extractor Ø 10, 12, 14 mm
Manufacturer: GPO · Material: Steel · Area of application: (Dis)assembly tool · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Surface: burnished · Total length: 130 mm · Width across flats SW: 10 mm · Width across flats SW: 17 mm · Number of components: 7 pcs
EUR 23.60
Moped fans also bought
Magura cable clamp Ø 8 x 15 mm
Ø Cable bushing: 2.3 mm · Manufacturer: Magura · Material: Brass · Material: Steel · Area of application: Standard · Thread type: M6x1 (standard thread) · Ø outside: 8 mm · Drive: External hexagon · Drive: Slot · Surface: galvanized (blue) · Surface: nickel-plated · Ø Bundle: 6 mm · Thread length: 7 mm · Total length: 15 mm · Screw head: Hexagon · Width across flats SW: 7 mm
EUR 2.95
OMG fuel filter metal 6 mm (removable)
Manufacturer: OMG · Material: Glass · Material: Metal · Color: gray · Color: transparent · Color: white · Ø outside: 22 mm · Filter type: Plastic net · demountable: Yes · Total length: 40 mm · Total length: 63 mm · Ø inside: 3.45 mm · Ø fuel hose connection: 5.6 mm · Ø fuel hose connection: 6 mm
EUR 8.05
swiing® revival seal Float SRE, SRC, SRF, SRA
Manufacturer: swiing® revival parts · Material: Sealing paper · 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 outside: 45 mm · Surface: blank · Ø inside: 41 mm · Thickness: 1.5 mm · Pony OEM number: A4519 · Sachs OEM no.: 0950 128 000
EUR 3.35
Magura gas cable clamp / deco cable clamp Ø 5 x 6 mm
Ø Cable bushing: 1.6 mm · Manufacturer: Magura · Material: Brass · Material: Steel · Thread type: M4x0.7 (standard thread) · Ø outside: 5 mm · Drive: Slot · Surface: nickel-plated · Thread length: 4 mm · Total length: 6 mm · Screw head: Lens head · Number of components: 2 pcs
EUR 2.35
GPO ignition plate 90 mm Bosch / DUCATI
Cable length: 400 mm · Cable length: 500 mm · Manufacturer: GPO · Material: Aluminum · Tension: 6 V · Area of application: Original · Area of application: Standard · Ø outside: 90 mm · Number of cables: 3 pcs · Number of fixing points: 4 pcs · Ø inside: 18.5 mm · Ø bolt circle: 80 mm
EUR 88.90
Magura adjusting screw brake short
Manufacturer: Magura · Material: Brass · Color: silver · Ø shaft: 6.1 mm · Shank length: 6.9 mm · Thread type: MF6x0.75 (fine pitch thread) · Drive: Knurled screw · Surface: nickel-plated · Thread length: 15 mm · Total length: 31 mm · Total length: 40 mm · Ø External head: 9.15 mm
EUR 4.05
Collection only possible with online purchase and appointment.
