41 mm gray cast iron tuning cylinder with a round, slot-controlled 12 mm intake, suitable for your moped, scooter, or small motorcycle equipped with a manual transmission and fan-cooled Sachs 50/2 (DE), 50/3 (DE), or 50/4 (DE) engine.
This slotted cylinder is suitable for Sachs 2-, 3-, and 4-speed fan-cooled engines, which were installed in models such as the Hercules 50/ALS, 50/2 S, 50/KS, 50/2 DK, 50/3 LS, 50/4 LKS, Gritzner, and other small motorcycles. The smaller cooling fins make installation on a Swiss Sachs 50/2 (502) engine easier, as the fan cowling can be mounted without modifications. However, modifications to the stud hole locations are unavoidable.
The cylinder is made of gray cast iron and has a sandblasted surface. With a displacement of 55 cc and a 12 mm round intake, this tuning cylinder is ideal for a simple performance upgrade for fan-cooled Sachs engines.
Bore pattern: 51x40 mm
; Exhaust thread: M35x2
; Intake thread: M5x0.8
Note: The cylinder is shipped loose and without a piston, gasket set, studs, or other mounting parts.
You can find compatible components in the accessories section.
A good, affordable standard replacement part. GPO – GOOD PARTS ONLY.
| Manufacturer | GPO |
| Material | Gray cast iron |
| Surface | sandblasted |
| Nominal diameter | 41 mm |
| Displacement | 55 ccm |
| Crankshaft stroke | 42 mm |
| Hole spacing inlet | 31 mm |
| Camouflaged | No |
| Number of fixing points | 4 pcs |
| Outlet type | Union nut |
| Area of application | Tuning, Racing |
| Sachs | 50 (Fahrtwind, 1.25 / 1.5 hp, DE) 502 (Saxonette) 50/3 50/4 - MLFB (2.6 PS) , LKH (4.5 PS) |
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