Made in Germany5-disc racing clutch for very powerful Vespa smallframe engines - developed for drag racing, sprinting and intensive racetrack use.
The KINGWELLE 5S-R DragBikeClutch is an uncompromising racing clutch for Vespa smallframe engines with a long auxiliary shaft, e.g. from DRT, Faio or similar manufacturers. Like the well-known KINGWELLE crankshafts, this clutch also comes directly from racing. It was developed to connect extremely powerful engines to the rear wheel in a controlled manner, even with hard starts, high engine speeds and repeated thermal loads. Especially in engines with approx. 50-70 hp and 40-45 Nm torque, a cleanly functioning clutch is not an accessory, but a key component for reproducible performance.
The origin of the KINGWELLE clutch lies in acceleration racing. There, the clutch must not only maintain high performance, but it must also engage in a controllable manner at the start and function consistently even after several runs with a hot engine. The 5-disc version was developed precisely for this application. It has proven itself over several years in racing scooters with power outputs of around 50-60 hp and above.
The 5S-R version is designed for tough everyday racing. The R stands for the ring that secures the upper cover plate. This eliminates the need for screws at this point. This reduces the risk of screws coming loose or getting lost, especially when working on the engine on the workbench or during racing. At the same time, the clutch remains designed for high spring forces and extreme loads.
This version is intended for smallframe engines with a long auxiliary shaft, such as those used in DRT, Faio or comparable racing auxiliary shafts. It is not the version for the standard length of the auxiliary shaft. It is therefore necessary to check which auxiliary shaft is installed in the motor before ordering.
The 5-disc version is intended for very powerful smallframe engines. KINGWELLE specifies the practical application range as approx. 50-70 hp or approx. 40-45 Nm, depending on lining material, spring assembly, oil, housing and overall setup. The clutch is therefore clearly aimed at engines in which standard or sports clutches no longer work reliably in the long term.
For the 5-disc version, the motor housing must be machined in some places, depending on the housing type and secondary shaft length. The reason for this is the greater overall height of the clutch due to the fifth disk.
The clutch kit contains the key components for assembling the KINGWELLE 5S-R DragBikeClutch. Depending on the version and manufacturer's status, springs and linings can be selected separately to match the clutch specifically to the engine power, intended use and rider's wishes.
The clutch can be operated with different linings and spring strengths depending on the engine power and area of application. Organic cork linings offer good grip and are attractively priced. Carbon linings are more heat-resistant, but usually have a slightly lower coefficient of friction and therefore require more spring tension.
For a properly functioning racing clutch, the clutch, oil, cover, lever travel and spring force must always be considered together. An excessively pretensioned lever or a permanently loaded release bearing can lead to damage. Excessive spring tension can also deform clutch components and exacerbate the actual problem.
This product is a tuning and racing part for very powerful engines. Installation and operation significantly affect the durability and load of the entire engine. Damage to the engine, vehicle or third parties is possible in the event of improper installation. Installation, tuning and operation are the responsibility of the user and should only be carried out with the appropriate expertise.
| 4-disc | for auxiliary shaft with standard length |
|---|---|
| 4-discs | for extended auxiliary shaft, e.g. DRT, Faio etc. |
| 5-discs | for extended auxiliary shaft, e.g. DRT, Faio etc. |
| Vespa 50 / N / L / R / S | V5A1T / V5SA1T, for engine mounting with long auxiliary shaft |
|---|---|
| Vespa 50 Special / Elestart | V5A2T / V5B1T / V5B3T, for engine setup with long auxiliary shaft |
| Vespa 50 SS / Super Sprint | V5SS1T, for engine mounting with long auxiliary shaft |
| Vespa 90 / 90 Racer / 90 SS | V9A1T / V9SS2T / V9SS1T, for engine setup with long auxiliary shaft |
| Vespa 125 Primavera | VMA2T, for engine mounting with long auxiliary shaft |
| Vespa 125 Primavera ET3 | VMB1T, for engine setup with long auxiliary shaft |
| Vespa PK50 / PK50 S | V5X1T / V5X2T, for engine setup with long auxiliary shaft |
|---|---|
| Vespa PK50 XL / XL2 / HP | V5X3T / V5N2T, for engine setup with long auxiliary shaft |
| Vespa PK50 SS | V5S1T, for engine mounting with long auxiliary shaft |
| Vespa PK80 / PK80 S | V8X5T, for engine setup with long auxiliary shaft |
| Vespa PK125 S / XL | VMX5T / VMX6T, for engine setup with long auxiliary shaft |
| Vespa PK125 ETS | VMS1T, for engine setup with long auxiliary shaft |
| Manufacturer: KINGWELLE | KINGWELLE |
|---|---|
| Model | 5S-R DragBikeClutch |
| Type | 5-disc racing clutch |
| PTO shaft | for long auxiliary shaft, e.g. DRT, Faio etc. |
| Power range | approx. 50-70 hp / 40-45 Nm, depending on setup |
| Spring type | PK XL2 spring type |
| Release | Release bearing with needle bearings |
| Oil recommendation | Motul 7100 10W40 |
| Oil quantity | approx. 400 ml standard case, up to approx. 600 ml Quattrini case |
| Housing machining | Required depending on housing and secondary shaft length |
The KINGWELLE 5S-R DragBikeClutch is not a comfort clutch for simple street setups, but a real racing clutch for extremely powerful smallframe engines with a long auxiliary shaft. If you are working in the 50-70 hp range and are looking for a controllable, resilient clutch for drag racing, sprinting or tough racetrack use, this is one of the most uncompromising solutions for Vespa smallframe engines.
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