
44.0 mm replacement piston with two 1.5 mm rectangular piston rings with internal fuse (IS) for the 44 mm racing cylinder for your Tomos S25/2, A38B and A35 moped / moped.
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 | GPO |
| Ø outside piston (A) | 43.96 mm |
| Compression height (C) | 21.9 mm |
| Curvature (D) | 4.15 mm |
| Nominal diameter | 44 mm |
| Total piston height (E) | 49.55 mm |
| Number of piston rings (F) | 2 pcs |
| Piston ring mold | Rectangular ring |
| Piston ring impact | Internal fuse (IS) |
| Piston ring height | 1.5 mm |
| Ø piston pin (B) | 12 mm |
| Tomos |
Accessories & related products
GPO piston pin extractor Ø 10, 12, 14 mm
Manufacturer: GPO · Area of application: (Dis)assembly tool · Material: Steel · Surface: burnished · Total length: 130 mm · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Number of components: 7 pcs · Width across flats: 10 mm · Width across flats: 17 mm
EUR 24.50
GPO 44 mm cylinder kit tuning 12 mm KoBo | Tomos A35
Manufacturer: GPO · Material: Aluminum · Camouflaged: No · Area of application: Tuning · Displacement: 65 ccm · Surface: sandblasted · Crankshaft stroke: 43 mm · Nominal diameter: 44 mm · Ø cylinder neck: 47.8 mm · Ø outlet inside: 22.8 mm · Inlet window: 35.5 x 29.5 mm · Thread inlet: M5x0.8 (standard thread) · Decompressor: No · Number of fixing points: 4 pcs · Ø piston pin (B): 12 mm · Hole pattern [mm]: 44 x 44 · Outlet type: slanted · Hole spacing outlet: 42 mm · Thread outlet: M6x1 (standard thread) · Hole spacing inlet: 36 mm · Hole spacing inlet: 39 mm
EUR 110.60
Explore categories from Piston
Moped fans also bought
swiing® revival Stud Bolt, Inlet/Outlet M6x30 (Grade 10.9)
Manufacturer: swiing® revival parts · Material: Steel · Surface: galvanized (blue) · Nominal diameter (thread): 6 mm · Total length: 30 mm · Diameter: 5.95 mm · Thread length: 12 mm · Thread type: M6x1 (standard thread) · Strength class: 10.9
EUR 2.20
NTN 6203 C3 Ball bearing 17/40/12
Bearing type: Deep groove ball bearing · Stock number: 6203 · Ø inside: 17 mm · Ø outside: 40 mm · Inner ring width: 12 mm · Manufacturer: NTN · Ball bearing closed: No · Bearing clearance: C3 · Bearing cage: Sheet steel cage ball-guided · Groove ring: No · Area of application: Standard · Material: Steel · Width: 12 mm
EUR 10.90
Motorex engine oil (gear oil) manual 450 ml
Manufacturer: Motorex · Oil type: GL4 · Viscosity (SAE): 80W · Area of application: Gearbox lubrication with clutch · Contents: 450 ml · Gearbox type: Foot control · Gearbox type: Manual gearshift · Temperature resistance (min.): -30 - 220 °C
EUR 13.40
EUR 29.78/l
Airsal gasket set 44 - 45 mm | Puch
Manufacturer: Airsal · Number of components: 4 pcs · Material: Aluminum · Material: Sealing carton · Material: Sealing paper · Area of application: Tuning · Ø cylinder: 44 mm · Ø cylinder: 45 mm · Decompressor: Yes · Hole pattern [mm]: 44 x 44 mm · Hole spacing outlet: 42 mm · Hole spacing inlet: 38 mm
EUR 12.20
DMP 44 mm cylinder head (higher compression) | Tomos
Manufacturer: DMP · Material: Aluminum · Area of application: Racing · Area of application: Tuning · Ø cylinder: 44 mm · Surface: glass bead blasted · Total length: 145 mm · Width: 145 mm · Ø screw holder: 8 mm · Height: 66 mm · Candle thread: short · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44
EUR 73.70









