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. In addition, you can find out about the relevant piston rings, their positions 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 locks and, if necessary, the corresponding cylinder in the accessories section.
Good, inexpensive standard spare part. GPO – GOOD PARTS ONLY.
| 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 |
| Nominal diameter | 44 mm |
| 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 · Number of components: 7 pcs · Width across flats SW: 10 mm · Width across flats SW: 17 mm · Area of application: (Dis)assembly tool
EUR 22.70
GPO 44 mm cylinder kit tuning 12 mm KoBo | Tomos A35
Manufacturer: GPO · Material: Aluminum · Surface: sandblasted · Displacement: 65 ccm · 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 · Thread inlet: M5x0.8 (standard thread) · Ø piston pin (B): 12 mm · Outlet type: slanted · Number of fixing points: 4 pcs · Hole spacing outlet: 42 mm · Thread outlet: M6x1 (standard thread) · Hole pattern [mm]: 44 x 44 · Decompressor: No · Camouflaged: No · Hole spacing inlet: 36 mm · Hole spacing inlet: 39 mm · Area of application: Tuning
EUR 102.70
Moped fans also bought
NTN 6203 C3 Ball bearing 17/40/12
Bearing type: Deep groove ball bearing · Stock number: 6203 · Inner ring width: 12 mm · Manufacturer: NTN · Ball bearing closed: No · Bearing clearance: C3 · Bearing cage: "-" Sheet steel cage ball-guided · Groove ring: No · Material: Steel · Surface: blank · Ø inside: 17 mm · Width: 12 mm · Ø outside: 40 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 [ml]: 450 ml · Gearbox type: Foot control · Area of application: Gearbox lubrication with clutch · Gearbox type: Manual gearshift · Temperature resistance (min.): -30 - 220 °C
EUR 11.30
EUR 25.11/l
swiing® revival nozzle set M5 (70 - 92) Dell'Orto SHA, PHBG
Manufacturer: swiing® revival parts · Material: Brass · Component group Carburetor: Spraying · Carburetor type: PHBG · Carburetor type: SHA · Carburetor type: SHA (Piaggio) · Quantity: 10 pcs · Nozzle type: Main nozzle · Drive: Slot · Nozzle thread: M5x0.8 (standard thread) · Nozzle size: 70 · Nozzle size: 72 · Nozzle size: 75 · Nozzle size: 78 · Nozzle size: 80 · Nozzle size: 82 · Nozzle size: 85 · Nozzle size: 88 · Nozzle size: 90 · Nozzle size: 92 · Total length: 8 mm
EUR 23.90
EBR telescopic fork "Jumpy" silver (P4510) | Pony GTX wide screen & Beta 521
Manufacturer: EWC · Material: Aluminum · Material: Steel · Surface: chrome-plated · Surface: varnished · Color: Chrome · Color: black · Color: silver · Adjustable: Yes · Total length: 670 mm · Spar end distance (center-center): 150 mm · Ø outer head tube: 25.5 mm · Ø head tube inside: 21.5 mm · Ø spars: 28 mm · Head tube length: 225 mm · Thread type: FG25.4 (1" 24G) · Thread length: 58 mm · Fork bridge - center wheel axle: 410 mm · Distance brake cam to wheel axle center-center: 38 mm
EUR 342.70
DMP 44 mm cylinder head (higher compression) | Tomos
Manufacturer: DMP · Material: Aluminum · Surface: glass bead blasted · Ø cylinder: 44 mm · Total length: 145 mm · Height: 66 mm · Number of fixing points: 4 pcs · Ø screw holder: 8 mm · Candle thread: short · Area of application: Racing · Area of application: Tuning · Hole pattern [mm]: 44 x 44 · Width: 145 mm
EUR 68.50
Collection only possible with online purchase and appointment.
