Cylinder Kit TPR Factory FL100 for racing crankcases
incl. tax, plus shipping
Description
TOP PERFORMANCES 100cc FL cylinder kit for 50cc scooters
Straight from the TPR Factory tuning division at Top Performances comes this beast of a big bore racing cylinder—delivering a massive 100cc displacement for a range of 50cc two-stroke scooters.
TPR 100: Technology & Performance
The all-new TPR 100cc cylinder kit is engineered for pure performance. It brings together cutting-edge technology and the latest advancements in two-stroke tuning. One standout feature is the FL (Flange Mount) system, which replaces traditional continuous stud bolts with a spacer mount. This allows for a complete redesign of the transfer ports, resulting in a significant boost in power output.
The modular cylinder head, complete with a bright red water jacket, ensures optimal cooling—essential for keeping this 100cc powerhouse under control.
It also includes a reinforced 4-point exhaust flange for secure and stable exhaust mounting.
Attention: Not approved for road use - race track only!
Advantages of Flanged Mount Design
More and more manufacturers are turning to Flange Mount cylinders for a reason. Compared to conventional stud-mounted cylinders, FL designs offer several key advantages:
- FL cylinders are fundamentally more stable and more precisely mounted. By eliminating the stud bolts, the cylinder is much better protected against torsional forces, and the cylinder head sits much more precisely due to the direct attachment to the cylinder.
- For manufacturers, the elimination of stud bolts results in more space, which offers greater potential for optimizing the design of the transfer ports, which is particularly advantageous for exhaust port layout.
TPR 100cc cylinder - setup & installation
The 100cc FL cylinder fits exclusively on racing cases such as the Malossi RC-One / C-ONE, the TPR case for Piaggio, 8.1 Fireblade. You’ll also need a crankshaft with 47mm stroke and 98mm connecting rod.
To get the most out of this kit, pair it with a high-performance exhaust to match performance and adjust the carburetor settings.
Technical details Top Performance 100cc racing cylinder:
- Aluminum cylinder
- Displacement: 100cc
- Bore: 52 mm
- Stroke: 47 mm
- 1-ring piston
- Modular cylinder head
- Exhaust flange with screws
- Stud bolt set
- Gasket set
TOP PERFORMANCE TPR Factory
The TPR Factory series from Top Performance includes the high-end products of the Italian tuning brand.
The TPR Factory tuning parts for 50cc scooters and 50cc motorcycles with high performance fall into the high-end racing category, e.g:
- CNC crankcases for scooters
- CNC gearbox cover for 50cc supermotards
- CNC transmission covers for scooters
- Racing clutch for 50cc supermotos
- 4-piston brake caliper
- Scooter exhaust
- Internal rotor ignition
The TPR Factory range is constantly being expanded to satisfy demanding riders and tuning fans looking for maximum quality and performance.
How to Install a cylinder on a scooter, motorcycle or moped
The cylinder or cylinder kit is the heart of the engine on scooters, motorcycles and mopeds. It consists of a cylinder, a piston with piston ring(s), a cylinder head and gaskets needed for installation.
The service life of a cylinder depends on whether it has been fitted correctly.

Tuning Level: High End racing
We categorize our products into different performance levels Original, Sport, Racing and High End , so that our customers can choose the right parts for their setup. It is really important to combine parts that belong to the same tuning level, this is especially true for cylinders, crankshafts and exhausts.
High End Racing products are exclusively designed for racing and should only be handled by tuning pros with the appropriate technical know-how. High-end racing parts often require modifications or machining of certain elements to accommodate the often larger components (larger crank webs, larger intake, etc.). Whether you stick with 50cc or increase the displacement, high-end racing parts offer much higher performance than the original parts and are the most powerful tuning parts.
Note: To ensure the reliability of the engine, it is important that the parts are compatible and that you do regular maintenance on your two-wheeler.
Aluminium cylinders
Aluminium cylinders are more powerful than cast iron cylinders, but require more regular maintenance and must be combined with different components such as a reinforced crankshaft and a larger carburetor.
How to run in an aluminium cylinder?
Aluminium cylinders should be run in for about 200 kilometers , and you should use a fully synthetic engine oil.
Note: To ensure optimum performance and reliability, it is advisable to measure the squish clearance. Just have a look at our tutorial How to adjust squish clearance.
Cylinder Kit TPR Factory FL100 for racing crankcases | |
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Article no. | T99GT52S000 |
Weight | 1,93 kg |
Series | TPR Factory |
Brand | Top Performances |
Product type | Cylinder kit |
Tuning level | High-end |
Displacement | 100cc |
Piston pin | 14 mm |
Cylinder material | Aluminium |
Bore | 52 mm |
Stroke | 47 mm |
Conrod length | 98 mm |
Spark plug thread | M14 long |