Fan-cooled 41 mm (55 ccm) tuning cylinder with a square inlet, suitable for your small motorcycle with a Sachs 50/3 (DE) or 50/4 (DE) engine.
The gray cast iron cylinder features a square intake and is suitable for fan-cooled Sachs 3- and 4-speed engines. The smaller cooling fins make installation on a Swiss Sachs 50/2 (502) engine easier, as the fan shroud can be mounted without modifications. However, modifications to the stud hole locations are unavoidable.
The tuning cylinder should preferably be used with a 17 mm Bing SSB carburetor.
Exhaust thread: M40x1.5
; Outer diameter: approx. 92 mm
; Bore: 41.01 mm
Notes:
The cylinder is shipped loose and without a piston, gasket set, studs, or other mounting parts.
When installing it on a Swiss Sachs 50/2 (502) engine, modifications to the stud hole locations are necessary.
You can find compatible mounting parts in the accessories section.
A good, affordable standard replacement part. GPO – GOOD PARTS ONLY.
| Nominal diameter | 41 mm |
| Manufacturer | GPO |
| Material | Gray cast iron |
| Area of application | Tuning |
| Displacement | 55 ccm |
| Crankshaft stroke | 42 mm |
| Ø Outlet outside | 40 mm |
| Outlet type | Union nut |
| Hole spacing inlet | 31 mm |
| Cooling type | Fan air cooling |
| Number of fixing points | 4 pcs |
| Sachs | 50 (Fahrtwind, 1.25 / 1.5 hp, DE) 50/3 50/4 - MLFB (2.6 PS) , LKH (4.5 PS) |
Accessories & related products
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