Clutch Cover - FRT Road Vespa Large Frame (1962–2016) - Vespa PX, T5 125cc, Cosa, Rally, Sprint, VNB4T–VNB6T, VBB2T, VNC1T, VLA1T, VBC1T, VNL2T, VNL3T, silver

FRT Road Clutch Cover for Vespa Largeframe – Fully Pre-assembled

The FRT Road clutch cover is a high-quality, fully pre-assembled solution for Vespa Largeframe engines from the early 1960s through the PX/Cosa series. It combines a robust aluminum housing with a precision rack-and-pinion mechanism, a double-bearing release system, and a spacious interior with a diameter of 122 mm.

The design aims to provide precise, smooth, and durable clutch operation—particularly beneficial for high-performance engines and clutches with increased spring forces.

FRT Road 122 mm inner diameter Rack-and-pinion mechanism double-bearing Viton seals Pre-assembled

Rack-and-pinion mechanism for precise actuation

Instead of a purely direct lever movement, the FRT Road clutch cover uses a rack-and-pinion mechanism. This ensures that the movement of the clutch arm is transferred to the release system in a controlled manner.

Especially for clutches with high spring force, a mechanism that is as play-free and smoothly guided as possible is important. The FRT design aims for even force transmission and precise clutch modulation.

Double-Bearing Clutch Arm

The release mechanism is guided by two roller bearings or needle roller bearings. This provides more stable guidance for the clutch arm and reduces lateral tilting.

Case-hardened and ground release shaft

The shaft of the release system is case-hardened and ground. This creates a hard, wear-resistant surface while ensuring a precise bearing surface.

This finish is particularly advantageous where the shaft operates continuously under varying loads at the bearing seats.

Ø122 mm interior space for large-frame clutches

The inner diameter of the cover is 122 mm. This gives the FRT Road ample installation space for standard Vespa Largeframe clutch designs.

Sufficient free play is particularly important for modern reinforced clutches. However, before final assembly, you should always check whether the clutch actually being used runs freely over its entire actuation stroke.

Viton O-rings and double-lip shaft seal

For sealing, FRT relies on Viton O-rings and a double-lip shaft seal. Viton is characterized by high resistance to oil, fuel vapors, and temperature, making it very well-suited for use in the engine compartment.

The double-lip design of the shaft seal improves the seal on the moving shaft compared to a single sealing lip.

Pressure plate with central bore and 2-mm extension

The system includes a clutch pressure plate with a central bore. A 2-mm extension is also included.

This allows the position of the release system to be adjusted to different clutch assemblies.

Dedicated Mounting Bracket and Adjustment Screw

FRT supplies a mounting bracket specifically designed for the cover, complete with an adjustment screw. This ensures that the cable guide is precisely aligned with the clutch arm.

The system is complemented by a dedicated cable clamp and a galvanized return spring for the clutch lever.

Fully pre-assembled

Compatible with Vespa Largeframe 1962–2016

The FRT Road is designed for a wide range of classic Vespa Largeframe models, including:

The key factors are the large-frame engine design and the corresponding clutch cover geometry. For early or already modified engines, the existing design should be compared with the FRT cover before ordering.

Technical Specifications

Scope of delivery

Installation Instructions

Conclusion

The FRT Road clutch cover is a high-quality, complete solution for Vespa large-frame engines. Its rack-and-pinion mechanism, dual bearings, hardened release shaft, and high-quality Viton seals create a precise and durable foundation for modern clutch setups.

Thanks to its large interior diameter of Ø122 mm, the optimized cable routing, and the fact that it comes fully pre-assembled, the cover is particularly well-suited for high-performance street and touring engines that require clean and reliable clutch operation.

FAQs about the FRT Road Clutch Cover