37.99 mm piston with two 2 mm rectangular piston rings with flank lock (FS) suitable for Sachs 504/2 ACH and 504/1 ACH mopeds / mopeds.
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 | Meteor |
| Ø outside piston (A) | 37.99 mm |
| Compression height (C) | 28 mm |
| Curvature (D) | 3 mm |
| Total piston height (E) | 53 mm |
| Number of piston rings (F) | 2 pcs |
| Nominal diameter | 38 mm |
| Piston ring mold | Rectangular ring |
| Piston ring impact | Flank safety device (FS) |
| Piston ring height | 2 mm |
| Ø piston pin (B) | 12 mm |
| Tolerance group | C |
| Weight piston kit | 77 g |
| Sachs | 504 (without pedal shaft) |
Ratings
Accessories & related products
Meteor piston 37.97 mm type A | Sachs 504
Manufacturer: Meteor · Ø outside piston (A): 37.97 mm · Compression height (C): 28 mm · Curvature (D): 3 mm · Total piston height (E): 53 mm · Number of piston rings (F): 2 pcs · Nominal diameter: 38 mm · 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: 78 g
CHF 56.50
Meteor piston 37.98 mm type B | Sachs 504
Manufacturer: Meteor · Ø outside piston (A): 37.98 mm · Compression height (C): 28 mm · Curvature (D): 3 mm · Total piston height (E): 53 mm · Number of piston rings (F): 2 pcs · Nominal diameter: 38 mm · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring height: 2 mm · Ø piston pin (B): 12 mm · Tolerance group: B · Weight piston kit: 77 g
CHF 56.50
Explore categories from Piston
Moped fans also bought
Hot 
KMC drive chain 415H (reinforced) 128L
Manufacturer: KMC · Material: Steel · Surface: blank / oiled · Chain pitch: 1/2" x 3/16" · Chain type: 415H · Rolling circumference: 1626 mm · Number of chain links: 128 pcs · Chain lock type: Spring lock · Ø bore: 4 mm · Ø Pin: 3.94 mm · Color: gray
CHF 12.50
Rear light glossy chrome - red
Material: Plastic · Test mark: none · Bulb holder: BA9s · Width: 65 mm · Height: 45 mm · Color: Chrome · Color: red · Ø Receptacle: 3.5 mm · Depth: 55 mm · Mounting type: Nuts & bolts · Battery operated: No · Number of fixing points: 1 pcs · Brake light: No · Reflectors: Yes
CHF 9.90
GPO fork lock | Puch
Material: Brass · Manufacturer: GPO · Material: Spring steel · Material: Steel · Ø rotating part: 12 mm · Wide locking block: 4.1 mm · Locking block length: 15.3 mm · Width: 17 mm · Ø Pin: 8 mm · Total length: 40.8 mm · Length of turned part: 25.6 mm · Ø outside: 12 mm
CHF 10.50
GPO headlight angular chrome / black without switch
Manufacturer: GPO · Test mark: none · Bulb holder: BA15d · Housing material: Plastic · Surface: chrome-plated · Surface: raw · Color: Chrome · Area of application: Standard · Color: black · Color: transparent · Tension: 6 V · Tension: 12 V · Thread size: M6 · Lens material: Plastic · Height: 86 mm · Width: 120 mm · Number of fixing points: 2 pcs · Depth: 140 mm · Speedometer recording: 48 mm · Switch included: No · Battery operated: No · Mounting type: screw in (thread)
CHF 19.90
Hot
Gas cable Ø 1.25 mm x 220 cm (cylindrical nipple) Bing
Manufacturer: Made in Germany · Material: Steel · Surface: galvanized (blue) · Ø nipple: 3 mm · Nipple length: 5 mm · Number of components: 1 pcs · Ø Stranded wire: 1.25 mm · Cable length: 2200 mm · Nipple shape: Cylinder · Area of application: Standard
CHF 2.40
Hot
Brake cable Ø 1.8 mm x 220 cm (pear-shaped nipple)
Manufacturer: Made in Germany · Material: Steel · Surface: galvanized (blue) · Ø nipple: 3.5 mm · Ø nipple: 6 mm · Nipple length: 10 mm · Number of components: 1 pcs · Ø Stranded wire: 1.8 mm · Cable length: 2200 mm · Nipple shape: Pears · Area of application: Standard
CHF 2.40
Motorex engine oil (gear oil) manual 450 ml
Manufacturer: Motorex · Temperature resistance (min.): -30 - 220 °C · Oil type: GL4 · Viscosity (SAE): 80W · Contents: 450 ml · Gearbox type: Foot control · Gearbox type: Manual gearshift · Area of application: Gearbox lubrication with clutch
CHF 10.90
CHF 24.22/l
Fortune / Merrick 2.00-2.25 x 16" / 17" inner tube
Manufacturer: Fortune · Tire width: 2 - 2.5 " · Tire width: 2.25 - 2.5 " · Tire width: 2.5 " · Tire width [mm]: 50.8 - 63.5 · Width: 2 " · Width: 2 1/4 " · Width: 2 1/2 " · Tire height [%]: 100 · Wheel size: 16 - 17 " · Wheel size: 17 " · Old designation: 20 x 2 " · Old designation: 20 x 2.25 " · Old designation: 20 x 2.5 " · Old designation: 21 x 2 " · Old designation: 21 x 2.25 " · Old designation: 21 x 2.5 " · Valve type: TR4 Auto valve
CHF 10.50
Not so nice 
Fortune 2.25 x 17" tires 2P.R. Allround
Manufacturer: Fortune · Inventory-managed: No · Tire width: 2.25 " · Tire width [mm]: 57.15 · Width: 2 1/4 " · Wheel size: 17 " · Old designation: 21 x 2.25 " · Speed index: N = 140 km/h · Load capacity index: 35 = 121 kg · Color: black · Profile type: 2 P.R. · Tire type: Allround · White wall: No · Tubeless (yes/no): Tubetype TT (requires hose)
CHF 28.50
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
