Racing cylinder of the Athena brand for Sachs 504 (with adaptations), 505 & 508 engines, which were installed on Hercules Prima M, 2, 3, 45 and Optima mopeds / mopeds, among others.
Thanks to the large intake, overflow and exhaust, this tuning cylinder provides a significant increase in performance.
The intake manifold and exhaust flange are not included in the scope of delivery.
Technical data cylinder:
- Distance between stud bolts and exhaust flange: 50 mm
- Ø thread exhaust flange: M8
- Ø Cylinder neck: 51.6 mm
- Stroke: 44 mm
- Bore: 38.0 mm
- Thread for decompressor: M10 x 1.5 mm
Notes:
Plugs with a long thread must be used.
The following modifications must be made to the cylinder on Swiss 504 engines (42 mm stroke):
- Adjust the cylinder base and gasket as shown in Figure 5 .
- The cylinder base must be turned off so that the compression is adjusted again due to the shorter stroke, we recommend setting a crushing edge of 0.8 - 1.0 mm.
- On models with an external clutch lever, the intake must be extended, otherwise the carburetor may come into contact with the clutch lever.
Quality product from the Italian manufacturer Athena.
Details
| Manufacturer | Athena |
| Material | Aluminum |
| Surface | sandblasted |
| Displacement | 50 ccm |
| Area of application | Tuning |
| Crankshaft stroke | 44 mm |
| Ø piston pin (B) | 12 mm |
| Nominal diameter | 38 mm |
| Ø cylinder neck | 51.7 mm |
| Ø outlet inside | 28.3 mm |
| Inlet window | 23.6 x 12.8 / 16.5 |
| Thread inlet | M6x1 (standard thread) |
| Hole spacing inlet | 32 mm |
| Number of fixing points | 4 pcs |
| Hole spacing outlet | 50 mm |
| Outlet type | straight |
| Thread outlet | M8x1.25 (standard thread) |
| Hole pattern [mm] | 56/61 x 56 |
| Decompressor | M10x1.5 |
| Camouflaged | No |
Suitable for the following models
| Sachs | 505 (mit Tretwelle) - 1A (AT), 2 A (HG) 508 - 1 A |
| Hercules | Prima - 2, 3, 4, 5, Optima |
Accessories & related products
Athena piston 38 mm #A | Sachs 504, 505
Manufacturer: Athena · Nominal diameter: 38 mm · Ø outside piston (A): 37.94 mm · Compression height (C): 29.25 mm · Curvature (D): 1.85 mm · Total piston height (E): 52.14 mm · Number of piston rings (F): 2 pcs · Piston ring impact: Internal fuse (IS) · Piston ring mold: Rectangular ring · Ø piston pin (B): 12 mm · Piston ring height: 1.5 mm · Tolerance group: A · Piston weight: 79 g
CHF 69.90
NGK B7ES spark plug long thread
Manufacturer: NGK · Candle designation: B7ES · Candle thread type: long · Spark plug socket: M4 · Spark plug socket: SAE · Thread type: MF14x1.25 (fine pitch thread) · Suppressed: No · Width across flats SW: 21 mm · Area of application: Performance · Area of application: Racing · Area of application: Tuning
CHF 6.50
Meteor piston ring 38 x 1.5 (IS) | Sachs 503 AB, AC
Height: 1.5 mm · Manufacturer: Meteor · Area of application: Original · Nominal diameter: 38 mm · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Thick piston ring: 1.6 mm · Pony OEM number: A1101 · Sachs OEM no.: 0215 100 100
CHF 9.90
Athena 38 mm cylinder kit (incl. mounting parts) | Sachs (504), 505, 508
Manufacturer: Athena · Camouflaged: No · Area of application: Tuning · Material: Aluminum · Surface: sandblasted · Crankshaft stroke: 44 mm · Displacement: 50 ccm · Ø piston pin (B): 12 mm · Nominal diameter: 38 mm · Ø cylinder neck: 51.7 mm · Ø outlet inside: 28 mm · Hole spacing inlet: 31.5 mm · Inlet window: 23.4 x 13 · Hole spacing outlet: 50 mm · Thread inlet: M6x1 (standard thread) · Hole pattern [mm]: 56 (61) x 56 · Decompressor: M10x1.5 · Number of fixing points: 4 pcs · Outlet type: clamped · Outlet type: straight · Thread outlet: M8x1.25 (standard thread)
CHF 289.90
Not in stock
NGK BR7EIX Spark plug long thread interference-suppressed Iridium
Manufacturer: NGK · Candle designation: BR7EIX · Candle thread type: long · Area of application: High End · Area of application: MX · Area of application: Racing · Area of application: Tuning · Spark plug socket: M4 · Spark plug socket: SAE · Thread type: MF14x1.25 (fine pitch thread) · Electrode material: Iridium · Suppressed: Yes · Width across flats SW: 21 mm
CHF 26.90
swiing ingenious exhaust adapter 24 mm Athena cylinder| Sachs 504, 505, 508
Ø inside: 20 mm · Total length: 67 mm · Manufacturer: swiing® ingenious parts · Material: Steel · Surface: galvanized (blue) · Hole spacing: 50 mm · Ø mounting hole: 8.3 mm · Ø outside: 24 mm · Width: 43 mm · Height: 25.5 mm
CHF 24.90
Moped fans like you also bought:
GPO license plate holder Inox
Manufacturer: GPO · Width: 105 mm · Height: 5.3 mm · Material: Chrome steel (stainless steel) · Color: silver · Thread type: M5x0.8 (standard thread) · Hole spacing: 30 mm · Hole spacing: 50 mm · Ø mounting hole: 5 mm · Total length: 145 mm · Thread length: 8 mm · Number of fixing points: 2 pcs · Mounting type: Nuts & bolts
CHF 10.90
Motorex engine oil (gear oil) manual 450 ml
Temperature resistance (min.): -30 - 220 °C · Manufacturer: Motorex · Oil type: GL4 · Viscosity (SAE): 80W · Contents [ml]: 450 ml · Gearbox type: Foot control · Gearbox type: Manual gearshift · Area of application: Gearbox lubrication with clutch
CHF 9.90
CHF 22.00/l
swiing® revival screw plug M14x1 gray | Sachs 503 2AL/2BL/AAL/AC/ABL, 504, 505, 535 (A4243)
Manufacturer: swiing® revival parts · Material: Plastic · Drive: Slot · Thread type: MF14x1 (fine pitch thread) · Color: gray · Screw head: Panhead · Pony OEM number: A4243 · Sachs OEM no.: 0240 140 207 · Sachs OEM no.: 0240 140 107
CHF 5.40
NGK B7ES spark plug long thread
Manufacturer: NGK · Candle designation: B7ES · Candle thread type: long · Spark plug socket: M4 · Spark plug socket: SAE · Thread type: MF14x1.25 (fine pitch thread) · Suppressed: No · Width across flats SW: 21 mm · Area of application: Performance · Area of application: Racing · Area of application: Tuning
CHF 6.50
Collection only possible with online purchase and appointment.
