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Fan-cooled 41 mm S4 (55 cc) racing kit with Barikit piston, 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 it can deliver up to 9 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 to ride. Install, ride, 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, air-cooled operation is also possible 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.
| Nominal diameter | 41 mm |
| Manufacturer | Tivedens Motor AB, Barikite |
| Material | Gray cast iron |
| Displacement | 55 ccm |
| Crankshaft stroke | 42 mm |
| Ø cylinder neck | 45 mm |
| Ø Outlet outside | 40 mm |
| Ø outlet inside | 30 mm, 18 mm |
| Hole spacing inlet | 31 mm |
| Inlet window | 17 x 15 mm |
| Ø piston pin (B) | 12 mm |
| Area of application | Tuning |
| Thread inlet | M5x0.8 (standard thread) |
| Outlet type | Union nut |
| Thread outlet | MF36x1.5 (fine pitch thread) |
| Number of fixing points | 4 pcs |
| Sachs | 50/2 50/3 50/4 |
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