39 mm oversize piston with 1.5 mm rectangular piston ring with flank lock (FS) and 2 mm L-ring piston ring with internal lock (IS) for your Tomos Funtastic, Funsport, Roadie moped / moped with A55 engine
.The detailed dimensioning 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 pistons, piston pins, piston clips and piston rings.
Note: The piston can also be used on Tomos mopeds with an A35 engine, provided the intake and exhaust are also replaced.
You can find other piston kits, the appropriate assembly tools and, if necessary, the matching cylinder in the accessories section.
Quality product from the Italian manufacturer Vertex.
| Manufacturer | Vertex |
| Ø outside piston (A) | 38.95 mm |
| Compression height (C) | 22.5 mm |
| Curvature (D) | 3.5 mm |
| Total piston height (E) | 50 mm |
| Number of piston rings (F) | 2 pcs |
| Piston ring mold | Rectangular ring, L-ring |
| Nominal diameter | 39 mm |
| Piston ring impact | Flank safety device (FS), Internal fuse (IS) |
| Piston ring height | 2 mm, 1.5 mm |
| Ø piston pin (B) | 12 mm |
| Weight piston kit | 81 g |
| Tomos | Fun Sport'R Roadie |
Ratings
Accessories & related products
GPO piston pin extractor Ø 10, 12, 14 mm
Manufacturer: GPO · Material: Steel · Surface: burnished · Area of application: (Dis)assembly tool · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Number of components: 7 pcs · Total length: 130 mm · Width across flats: 10 mm · Width across flats: 17 mm
EUR 23.00
Airsal piston 38 mm (12 mm KoBo) | Tomos A35
Nominal diameter: 38 mm · Manufacturer: Airsal · Ø outside piston (A): 37.95 mm · Compression height (C): 22.5 mm · Curvature (D): 3.85 mm · Total piston height (E): 52.35 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
EUR 57.60
Airsal piston 44 mm (10 mm KoBo) | Tomos A35
Nominal diameter: 44 mm · Manufacturer: Airsal · Ø outside piston (A): 43.95 mm · Compression height (C): 21.1 mm · Curvature (D): 3.7 mm · Total piston height (E): 49.2 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): 10 mm · Weight piston kit: 83 g
EUR 54.20
Airsal 44 mm piston (12 mm KoBo) | Tomos A55
Nominal diameter: 44 mm · Manufacturer: Airsal · Ø outside piston (A): 43.95 mm · Compression height (C): 22.2 mm · Curvature (D): 3.8 mm · Total piston height (E): 62.65 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 · Weight piston kit: 92 g
EUR 54.20
GPO piston 44 mm (12 mm KoBo) | Tomos A3/A35
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
EUR 43.80
Piston 45 mm (12 mm KoBo) | Tomos A3 / A35
Nominal diameter: 45 mm · Ø outside piston (A): 44.94 mm · Compression height (C): 22 mm · Curvature (D): 4 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 · Weight piston kit: 91 g
EUR 40.30
Vertex piston 38 mm (12 mm KoBo) type B | Tomos A55
Nominal diameter: 38 mm · Manufacturer: Vertex · Ø outside piston (A): 37.97 mm · Compression height (C): 22.5 mm · Curvature (D): 3 mm · Total piston height (E): 52 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring height: 1.5 mm · Ø piston pin (B): 12 mm · Weight piston kit: 70 g
EUR 92.30
Vertex piston 38.5 mm (12 mm KoBo) oversize | Tomos A55
Nominal diameter: 38.5 mm · Manufacturer: Vertex · Ø outside piston (A): 38.45 mm · Compression height (C): 22.5 mm · Curvature (D): 3.5 mm · Total piston height (E): 50 mm · Number of piston rings (F): 2 pcs · Piston ring mold: L-ring · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring impact: Internal fuse (IS) · Piston ring height: 1.5 mm · Piston ring height: 2 mm · Ø piston pin (B): 12 mm · Weight piston kit: 77 g
EUR 92.30
Moped fans also bought
Airsal piston 38 mm | Puch
Nominal diameter: 38 mm · Manufacturer: Airsal · Thick piston ring: 1.6 mm · Ø outside piston (A): 37.95 mm · Compression height (C): 22.3 mm · Curvature (D): 3.8 mm · Total piston height (E): 52.5 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
EUR 50.70
GPO piston 40 mm rectangular rings (12 mm KoBO) | Puch X30 Velux fan-cooled
Nominal diameter: 40 mm · Manufacturer: GPO · Thick piston ring: 1.65 mm · Ø outside piston (A): 39.94 mm · Compression height (C): 22.5 mm · Curvature (D): 3.4 mm · Total piston height (E): 52.45 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: 90 g
EUR 28.30
Collection only possible with online purchase and appointment.
