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.
| Nominal diameter | 44 mm |
| Manufacturer | GPO |
| Ø outside piston (A) | 43.96 mm |
| Compression height (C) | 21.9 mm |
| Curvature (D) | 4.15 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 · Material: Steel · Surface: burnished · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Total length: 130 mm · Width across flats: 10 mm · Width across flats: 17 mm · Number of components: 7 pcs · Area of application: (Dis)assembly tool
EUR 22.80
GPO 44 mm cylinder kit tuning 12 mm KoBo | Tomos A35
Nominal diameter: 44 mm · Manufacturer: GPO · Material: Aluminum · Surface: sandblasted · Crankshaft stroke: 43 mm · Displacement: 65 ccm · Ø cylinder neck: 47.8 mm · Ø outlet inside: 22.8 mm · Number of fixing points: 4 pcs · Ø piston pin (B): 12 mm · Inlet window: 35.5 x 29.5 mm · Thread inlet: M5x0.8 (standard thread) · Hole pattern [mm]: 44 x 44 · Hole spacing inlet: 36 mm · Hole spacing inlet: 39 mm · Decompressor: No · Outlet type: slanted · Hole spacing outlet: 42 mm · Thread outlet: M6x1 (standard thread) · Camouflaged: No · Area of application: Tuning
EUR 103.10
Explore categories from Piston
Moped fans also bought
swiing® revival Stud Bolt, Inlet/Outlet M6x30 (Grade 10.9)
Material: Steel · Total length: 30 mm · Manufacturer: swiing® revival parts · Strength class: 10.9 · Surface: galvanized (blue) · Diameter: 5.95 mm · Thread type: M6x1 (standard thread) · Nominal diameter (thread): 6 mm · Thread length: 12 mm
EUR 2.05
NTN 6203 C3 Ball bearing 17/40/12
Material: Steel · Bearing type: Deep groove ball bearing · Bearing cage: Sheet steel cage ball-guided · Stock number: 6203 · Width: 12 mm · Inner ring width: 12 mm · Manufacturer: NTN · Ball bearing closed: No · Ø outside: 40 mm · Bearing clearance: C3 · Groove ring: No · Ø inside: 17 mm · Area of application: Standard
EUR 10.20
Motorex engine oil (gear oil) manual 450 ml
Manufacturer: Motorex · Viscosity (SAE): 80W · Oil type: GL4 · Contents: 450 ml · Gearbox type: Foot control · Gearbox type: Manual gearshift · Temperature resistance (min.): -30 - 220 °C · Area of application: Gearbox lubrication with clutch
EUR 12.50
EUR 27.78/l
Airsal gasket set 44 - 45 mm | Puch
Material: Aluminum · Material: Sealing carton · Material: Sealing paper · Manufacturer: Airsal · Ø cylinder: 44 mm · Ø cylinder: 45 mm · Hole spacing inlet: 38 mm · Hole pattern [mm]: 44 x 44 mm · Decompressor: Yes · Number of components: 4 pcs · Hole spacing outlet: 42 mm · Area of application: Tuning
EUR 11.40
DMP 44 mm cylinder head (higher compression) | Tomos
Manufacturer: DMP · Material: Aluminum · Surface: glass bead blasted · Ø cylinder: 44 mm · Number of fixing points: 4 pcs · Ø screw holder: 8 mm · Hole pattern [mm]: 44 x 44 · Candle thread: short · Total length: 145 mm · Width: 145 mm · Height: 66 mm · Area of application: Racing · Area of application: Tuning
EUR 68.70
Working late? Evening hours on Thursday until 20:00
