38.50 mm replacement piston / piston kit with two 2 mm rectangular piston rings with flank lock (FS) suitable for mopeds / mopeds with blown Sachs 50/3, 50/4 replica cylinders.
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.
You will find the corresponding assembly tool, piston pin retainers and, if necessary, the corresponding cylinder in the accessories section.
Original Sachs spare part number: 0290 058 025
| Nominal diameter | 38.5 mm |
| Ø outside piston (A) | 38.46 mm |
| Compression height (C) | 27.7 mm |
| Curvature (D) | 3.1 mm |
| Total piston height (E) | 52.75 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 | 80 g |
| Sachs | 50/3 50/4 - MLFB (2.6 PS), LKH (4.5 PS) |
Ratings
Accessories & related products
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
EUR 24.20
Moped fans also bought
Hot 
KMC drive chain 415H (reinforced) 128L
Chain type: 415H · Manufacturer: KMC · Material: Steel · Surface: blank / oiled · Color: gray · Number of chain links: 128 pcs · Chain pitch: 1/2" x 3/16" · Ø bore: 4 mm · Rolling circumference: 1626 mm · Chain lock type: Spring lock · Ø Pin: 3.94 mm
EUR 15.20
Hot
Brake cable Ø 1.8 mm x 220 cm (pear-shaped nipple)
Ø Stranded wire: 1.8 mm · Nipple shape: Pears · Ø nipple: 3.5 mm · Ø nipple: 6 mm · Nipple length: 10 mm · Manufacturer: Made in Germany · Material: Steel · Surface: galvanized (blue) · Number of components: 1 pcs · Cable length: 2200 mm · Area of application: Standard
EUR 2.90
Plastic license plate holder (CH version)
Material: Brass · Material: Plastic · Color: black · Total length: 175 mm · Height: 11 mm · Number of fixing points: 9 pcs · Ø mounting hole: 6 mm · Manufacturer: Made in Switzerland · Width: 108 mm · Mounting type: Nuts & bolts · Thread length: 6 mm · Thread type: M5x0.8 (standard thread) · Hole spacing: 50 mm
EUR 9.60
Union pedals plastic standard
Manufacturer: Union · Material: Plastic · Material: Steel · Surface: rubberized · Color: black · Total length: 129 mm · Width across flats: 15 mm · Width: 77 mm · Drive: Hexagon socket · Drive: Outer edge · Height: 29 mm · Reflectors: Yes · Thread type: FG14.3 (9/16" 20G)
EUR 15.70
Meteor piston 38.6 mm oversize | Sachs 50/2 & 503
Nominal diameter: 38 mm · Manufacturer: Meteor · Ø outside piston (A): 38.55 mm · Compression height (C): 28 mm · Curvature (D): 3 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: 84 g · Pony OEM number: A2774 · Pony OEM number: A4359 · Sachs OEM no.: 0286 377 012 · Sachs OEM no.: 0286 378 006
EUR 60.60
Collection only possible with online purchase and appointment.
