| Advantage | Product description |
|---|---|
| Complete and pre-assembled | Cover, CNC clutch arm, spring, release lever, separating mushroom, O-rings and screws - supplied ready to fit |
| Conversion to PX clutch | Makes early largeframe engines 1958-1962 fit for PX/Cosa clutches and CNC sports clutches |
| More space inside | Designed higher than the standard cover, therefore sufficient space for reinforced clutches |
| ULTRALUBE oil guide | Targeted lubrication of separating mushroom and pressure bearing for a long service life |
| Adjustable clutch arm | Two leverage points for more disconnection travel or less manual force, depending on the setup |
| Silver CNC look | Milled from the solid, silver BGM Pro look to match clean restorations |
More than just a cover: The BGM PRO Superstrong CNC ULTRALUBE cl utch cover for early Vespa Largeframe models (1958 to 1962) comes here as a completely pre-assembled kit - including clutch arm, clutch arm spring, release lever, separating mushroom, O-rings and mounting material. The silver CNC design enables conversion to the modern PX clutch type and at the same time creates space for reinforced and CNC-machined sports clutches.
The first Vespa largeframe engine cases (VBA, VBB1, VNA2, VNB1-3, VGLA, VGLB) have a flatter design in terms of the distance between the sealing surface of the clutch cover and the crankshaft bearing. The originally installed, flat clutches are more difficult to obtain and are often already at their limit with moderate power increases. The BGM PRO CNC cover is deliberately designed higher for these engines and allows the use of standard PX/Cosa clutch types including modern CNC versions - without milling work on the housing. The standard thin washer (approx. 1.5 mm) is still used.
Many machined out series covers lose the oil supply for the separating mushroom during machining. The BGM PRO ULTRALUBE coverguides the transmission oil specifically to the release bearing and pressure plate. This reduces wear, improves the separation behavior and ensures high long-term stability - especially in combination with powerful clutch springs and high-torque engines.
Thanks to the higher design of the cover, a PX/Cosa clutch pack can be installed in the early Largeframe engines. This means that robust Superstrong and other CNC clutches are available which are much better suited to the increased performance level of modern setups than the flat original clutches. The inside of the cover is contoured in such a way that the standard oversize Sport and Race clutches can be fitted without additional reworking of the cover.
Note: This cover replaces the flat original version and creates space for PX/Cosa clutches and CNC systems. The thin original washer (approx. 1.5 mm) remains in use.
The cover is screwed onto the engine housing using the enclosed mounting material. Lay the clutch cable tension-free and hook it into the inner or outer hole of the CNC arm as required. Then adjust the clutch play and check the disconnection behavior. Ensure clean sealing surfaces and correct oil filling during all work.
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