Blade-cooled 43 mm (61 cc) cylinder kit with 12 mm piston pin, suitable for your Sachs 50, 502, 50/2, 50/3, 50/4 moped / moped.
The timing of the cylinder was kept rather low, which is characterized by a very nice torque in the lower speed range.
The racing cylinder kit without sealing includes cylinder & piston kit without gaskets.
- Grey cast iron tuning cylinder with & 43.0 mm bore
- Slot-controlled
- 17x15 mm intake, 31 mm stud spacing
- Optimized overflow channels
- 2-piece outlet
- Improved control times
- No spindling of the engine housing necessary (Ø cylinder neck 46.0 mm)
- Exhaust thread: M40 x 1.5 mm
- Hole pattern for stud bolts: 60 x 40 mm for CH engines
- Pre-drilled hole pattern for stud bolts: 51 x 40 mm for DE engines
- Cylinder head hole pattern: 37 x 37 mm
- Incl. Ø 43 mm piston from the Italian manufacturer -GOL-
Note: 60 mm long M6 stud bolts must be used to mount the cylinder. Please observe the installation direction when assembling. The piston is inserted with the arrow pointing towards the outlet on the exhaust side.
Detailed assembly instructions are included.
Corresponding accessories such as gaskets, cylinder head, exhaust system etc. can be found in the accessories section.
Made by the BADASS brand.
| Manufacturer | BAD ASS |
| Material | Gray cast iron |
| Camouflaged | No |
| Area of application | Tuning |
| Displacement | 61 ccm |
| Crankshaft stroke | 42 mm |
| Ø piston pin (B) | 12 mm |
| Nominal diameter | 43 mm |
| Ø cylinder neck | 46 mm |
| Ø Outlet outside | 40 mm |
| Ø outlet inside | 28 mm |
| Inlet window | 17 x 15 mm |
| Thread inlet | M5x0.8 (standard thread) |
| Hole pattern [mm] | 60 x 40 / 51 x 40 / 37 x 37 |
| Number of fixing points | 4 pcs |
| Outlet type | Union nut |
| Thread outlet | MF40x1.5 (fine pitch thread) |
| Hole spacing inlet | 31 mm |
| Sachs | 50 (Fahrtwind, 1.25 / 1.5 hp, DE) 502 (Saxonette) - AL , AML 50/2 - L CH (0.8 PS) , ML CH (0.8 PS) , MB (2.6 PS) , MLB (2.6 PS) 50/3 50/4 - MLFB (2.6 PS) , LKH (4.5 PS) |
Accessories & related products
swiing® revival stud bolt M5 x 23 inlet (diaphragm) 10.9 | Sachs 50/2 (A3700)
Manufacturer: swiing® revival parts · Material: Steel · Surface: galvanized (blue) · Thread type: M5x0.8 (standard thread) · Total length: 23 mm · Diameter: 4.9 mm · Thread length: 6 mm · Thread length: 12 mm · Nominal diameter (thread): 5 mm · Area of application: Standard · Pony OEM number: A3700 · Sachs OEM no.: 0640 016 101 · Sachs OEM no.: 0640 016 102
EUR 2,10
swiing® revival bolt set cylinder head galvanized | Sachs 503 / 50/2 / 50/3 / 50/4
Manufacturer: swiing® revival parts · Material: Steel · Surface: galvanized (blue) · Ø shaft: 5.85 mm · Color: silver · Shank length: 8 mm · Thread type: M6x1 (standard thread) · Nominal diameter (thread): 6 mm · Drive: External hexagon · Thread length: 22 mm · Screw head: Hexagon · Total length: 34 mm · Width across flats: 10 mm · Shank: Yes · Number of components: 12 pcs · Strength class: 10.9 · Area of application: Standard
EUR 5,75
swiing® ingenious gasket cylinder head 41 mm | Sachs 503, 502, 50/2, 50/3, 50/4
Manufacturer: swiing® ingenious parts · Thickness: 0.3 mm · Material: Aluminum · Nominal diameter: 41 mm · Ø cylinder: 41 mm · Place of use: Cylinder head · Area of application: Standard · Hole pattern [mm]: 37 x 37 · Ø inside: 41.7 mm
EUR 5,75
swiing® ingenious 41 mm cylinder head tuning | Sachs 50/2, 50/3, 50/4
Manufacturer: swiing® ingenious parts · Number of fixing points: 4 pcs · Material: Aluminum · Surface: sandblasted · Ø cylinder: 41 mm · Width: 95 mm · Height: 50 mm · Total length: 127 mm · Ø outside: 98 mm · Ø screw holder: 19 mm · Hole pattern [mm]: 37 x 37 · Candle thread: long · Area of application: Standard · Decompressor: M10x1.5
EUR 80,60
BAD ASS cylinder head L Ø 41-43 mm | Sachs 502, 50/2, 50/3, 50/4
Manufacturer: BAD ASS · Material: Aluminum · Ø cylinder: 41 - 43 mm · Ø outside: 108 mm · Ø screw holder: 19.3 mm · Hole pattern [mm]: 37 x 37 · Number of fixing points: 1 pcs · Number of fixing points: 4 pcs · Area of application: Tuning · Decompressor: M10x1.5
EUR 176,40
Explore categories from Cylinder
Moped fans also bought
swiing® revival exhaust nut M40x1.5 galvanized (for 32 mm pipe) | Sachs
Ø inside: 33.5 mm · Manufacturer: swiing® revival parts · Material: Steel · Surface: galvanized (blue) · Thread type: MF40x1.5 (fine pitch thread) · Nut type: Union nut · Ø outside: 46 mm · Height: 19 mm · Nominal diameter (thread): 40 mm
EUR 16,40
swiing® revival carburetor 17 mm Bing SSB 1/17/69
Manufacturer: swiing® revival parts · Mounting type: Flange · Material: Aluminum · Camouflaged: No · Component group Carburetor: Carburetor complete · Nominal diameter: 17 mm · Width: 85 mm · Carburetor type: SSB · Choke control: without choke · Hole spacing inlet: 31 mm · Height: 100 mm · Total length: 132 mm · Area of application: Standard · Area of application: Tuning · Ø fuel hose connection: 6 mm · Mixed oil connection: No · Vacuum connection: No · Nozzle size: 76
EUR 149,30
BAD ASS cylinder head L Ø 41-43 mm | Sachs 502, 50/2, 50/3, 50/4
Manufacturer: BAD ASS · Material: Aluminum · Ø cylinder: 41 - 43 mm · Ø outside: 108 mm · Ø screw holder: 19.3 mm · Hole pattern [mm]: 37 x 37 · Number of fixing points: 1 pcs · Number of fixing points: 4 pcs · Area of application: Tuning · Decompressor: M10x1.5
EUR 176,40
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
