Reinforced FRT Clutch Arm for Vespa Smallframe – with a 10-mm shaft, dual bearings, and compatible with original HP clutch covers.
The reinforced FRT clutch arm is a high-quality solution for high-performance Vespa Smallframe clutches. At its core is the Ø10-mm release shaft, which is case-hardened and precision-ground, providing a robust and wear-resistant bearing surface.
The system is designed for a double-bearing configuration and is suitable for both modified clutch covers and original Vespa HP clutch covers. Especially in clutches with high spring force, the more stable guidance of the clutch arm ensures more precise power transmission and reduces the tendency of the release shaft to tilt.
FRT Ø10 mm double-bearing case-hardened ground HP compatible
With high-performance small-frame clutches, the forces acting on the release mechanism increase significantly. A larger, more rigidly guided shaft reduces bending and surface stress in the bearing area.
The FRT version features a shaft diameter of 10 mm and a usable length of 107 mm. The shaft is case-hardened and ground, making the bearing surfaces particularly durable.
The system is designed to be converted to a double-bearing configuration. This guides the coupling arm via two bearing points, providing more stable guidance compared to a version supported on only one side.
The 10-mm bearing diameter is designed for the corresponding bearing arrangement. Depending on the version, the shaft can be guided by needle rollers or a self-lubricating bushing.
It is crucial that the shaft is guided cleanly, without play, and yet smoothly. Especially with high clutch forces, care should be taken to ensure precise machining of the clutch cover and correct alignment of the bearing seats.
The FRT system is also compatible with original Vespa HP clutch covers. This makes the reinforced clutch arm suitable for both specific modifications and existing HP-based release systems.
For clutch covers that are not already designed for the 10-mm diameter or dual-bearing configuration, appropriate mechanical machining may be required. Bearing seats, alignment, and free play must be checked before final installation.
| Manufacturer | FRT |
|---|---|
| Component | Clutch Arm / Release Shaft |
| Vehicle Series | Vespa Smallframe |
| Shaft diameter | Ø10 mm |
| Effective length | 107 mm |
| Bearing diameter | Ø10 mm |
| Shaft surface | Case-hardened and ground |
| Bearing arrangement | Double guidance / bearing arrangement |
| Possible bearing types | Needle rollers or self-lubricating bushings, depending on the model |
| Compatibility | Also compatible with original Vespa HP clutch covers |
The reinforced FRT clutch arm is a logical upgrade for Vespa small-frame clutches with increased disengagement forces. The 10-mm-diameter shaft, the hardened and ground surface, and the dual-bearing design create a more robust and precise foundation for clutch operation.
The additional stability is a particularly useful advantage for high-performance engines and strong clutch springs. At the same time, the system remains compatible with original Vespa HP clutch covers.
DE | €
