Fan-cooled 41 mm (55 ccm) racing cylinder suitable for your moped with a Sachs 50, 502, 50/2, 50/3, or 50/4 engine.
The valve timing on this racing cylinder is intentionally set low, which ensures strong torque in the lower RPM range. The two-piece exhaust further enhances this effect. So you can enjoy every ride discreetly in everyday life, a “30 km” embossing conceals the actual power of your engine.
Differences between the GPO Divertimento cylinder and the original BADASS Diablo cylinder when paired with a matching GPO piston:
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On the GPO cylinder, the web of the split exhaust port is slightly chamfered to minimize the risk of an exhaust-side heat seizure.
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On the GPO tuning cylinder, the edges of the overflow channels near the cylinder neck have been chamfered to facilitate piston ring installation.
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The matching GPO piston is designed to work with the cylinder. Differences include the crown profile and the cutouts in the piston skirt for the overflow channels.
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On the GPO Divertimento, more space was created for the nuts to secure the cylinder base.
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The angle of the intake tract has been adjusted so that the carburetor and air filter are now aligned horizontally and no longer point diagonally upward.
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On the BADASS Diablo, the embossed “30 km” logo is positioned off-center, whereas on the GPO Divertimento it is centered, as on the original Swiss cylinder.
Notes:
The cylinder is shipped loose and without a piston, gasket set, studs, or other mounting parts.
The cylinder base is factory-designed for Swiss 50/2 (502) engines. However, the mounting holes for the German 50/2 engine casing are marked. This allows you to drill them out if necessary and use the cylinder as usual for your moped with a German engine casing.
The large intake allows for the use of the 17 mm swiing® tuning carburetor, provided it is mounted with a short air filter cap, the appropriate clamp (short), and the corresponding cover plate (long/deep).
You can find the larger 43 mm version of the racing cylinder as well as the matching 17 mm carburetor in the accessories section.
A good, affordable standard replacement part. GPO – GOOD PARTS ONLY.
| Manufacturer | GPO |
| Material | Gray cast iron |
| Displacement | 55 ccm |
| Nominal diameter | 41 mm |
| Ø cylinder neck | 46 mm |
| Hole spacing inlet | 31 mm |
| Ø Outlet outside | 40 mm |
| Camouflaged | Yes |
| Number of fixing points | 4 pcs |
| Hole spacing | 28 mm |
| Outlet type | Union nut |
| 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) |
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