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Fan-cooled 41 mm S3 (55 cc) racing kit suitable for your moped or small motorcycle with a Sachs 50/2 (DE), 50/3, or 50/4 engine.
This tuning cylinder is a clear statement for anyone who wants real performance. Meticulously handcrafted by Tivedens Motor, this cylinder delivers uncompromising torque, crisp throttle response, and a riding experience that immediately impresses. Each individual cylinder is numbered and crafted with extensive experience, technical expertise, and a genuine passion for performance. Depending on the setup used, the manufacturer claims a power output of 6.9–7.2 hp.
A racing cylinder for anyone who doesn’t want to spend time comparing options, but is looking for a part that works, delivers performance, and is simply fun. Install it, ride it, smile.
Scope of delivery as shown in Image 1.
Notes:
The racing cylinder is primarily used on the Sachs 50/3 and 50/4 engines. Thanks to the large cooling fins, it can also be used in an air-cooled configuration on the Sachs 50/2 (DE) engine.
The cylinder is equipped with a large square intake port for a 17 mm carburetor and a large M40 exhaust thread. Please take this into account when selecting your additional components. Please observe the installation direction during assembly. The piston is installed with the arrow pointing toward the exhaust on the exhaust side.
You can find the matching cylinder head, mounting hardware, exhaust systems, and threadlocker in the accessories section.
Quality product from the Swedish manufacturer Tivedens Motor AB.
| Manufacturer | Tivedens Motor AB |
| Area of application | Tuning |
| Material | Gray cast iron |
| Surface | varnished |
| Displacement | 55 ccm |
| Crankshaft stroke | 42 mm |
| Nominal diameter | 41 mm |
| Ø piston pin (B) | 12 mm |
| Ø cylinder neck | 44 mm |
| Ø Outlet outside | 40 mm |
| Ø outlet inside | 29.5 mm |
| Inlet window | 17 x 15 mm |
| Number of fixing points | 4 pcs |
| Thread inlet | M5x0.8 (standard thread) |
| Hole spacing inlet | 31 mm |
| Outlet type | Union nut |
| Thread outlet | MF40x1.5 (fine pitch thread) |
| Sachs | 50/2 50/3 50/4 |
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