Adjuster screw and trunnion set -BGM PRO- for Vespa and Lambretta

New trunnions and adjustger screws (clutch cable, brake cable, throttle) for Vespa and Lambretta in a practical set

We have optimised the trunnions and adjuster screws for Vespa and Lambretta, they’re much easier to use and more reliable!

New: now also available in a practical set.
The adjuster screw and trunnion sets, together with the transmission cables, should be in everyone’s glove compartment. These sets fit many models of Vespa and Lambretta scooters and are a useful aid in case of breakdown.

• Trunnion and adjuster screw set for Vespa
• Trunnion and adjuster screw set for Lambretta

Trunnion/adjuster screw set -BGM PRO- Lambretta LI, LIS, SX, TV (series 2-3), DL, GP

This set is for Lambretta models and includes the following parts:

• 3 pcs adjuster screw M7x25mm
• 2 pcs trunnion „short“  Ø10×13mm
• 1 pc trunnion „long“ Ø10×16,2mm
• 2 pcs top hat bush, rear brake cable Øi=10mm
• 1 pc top hat bush, front brake cable Øi=8,5mm
• 2 pcs trunnion, throttle Ø5,5×7,5mm
• 2 pcs cable barrel, brake and clutch cable Ø8x9mm
• 1 pc Allen key SW3,5

More durable inner cables

The trunnions for the gear change and clutch cables are machined from brass and are provided with small plates.

The brass has a lubricating effect in the gear box and clutch mountings. Thanks to the reduced friction of the trunnion in the mounting, the cables are less subject to stress and the risk of tearing will be strongly minimized.

In the trunnions there are small plates which protect the cables from the notch effect and, as a result, this prevents the splitting of the single filaments when tightening the screw. The inner cable distorts less and thus it can be often untied and be easily tied again. For this procedure we suggest you to use pliers for transmission cables.

The set also includes the suitable Allen key SW 3,5.

Trunnion Lambretta BGM6498, 10×13 brass, 10×16 brass

Adjuster screw and trunnion set -BGM PRO- Vespa wideframe, largeframe and smallframe

The set for the Vespa models includes the following parts:

• 3 pcs adjuster screw M5x30mm
• 4 pcs adjuster screw M5x20mm
• 1 pc adjuster screw M7x25mm
• 5 pcs trunnion for gear change and clutch
• 1 pc trunnion for gear change cable PK XL2 / Cosa
• 5 pcs top hat bush Øi=6,2mm for gear change and brake cable
• 1 pc top hat bush Ød=8,2mm for brake cables
• 2 pcs trunnion for throttle Ø5,5x7mm
• 2 pcs trunnion for throttle Ø4x9mm
• 2 pcs cable barrel for brake and clutch cable Ø8x9mm
• 2 pcs cable barrels for brake and clutch cable Ø9x11mm (PK, PKS)

Optimised adjuster screws

The adjuster screws of the BGM set are provided with high nuts. Thanks to this new feature, adjuster screws can be easily used also with a normal open-end spanner even in those spots which are difficult to reach. In Vespa smallframe models with two gear change cables it will also be much easier to reach the lock nut.

Optimised trunnions

The trunnions for gear change and clutch cables are now are provided with small plates machined from brass.

The small plates prevent the notch effect and also the splitting of the single filaments when tightening the screw. The inner cable distorts less and thus it can be often untied and be easily tied again. For this procedure we suggest you to use pliers for transmission cables.

The trunnion for all Vespa scooters PK-XL2, HP and Cosa FL with the so called one cable gear change are slightly different from the trunnion for the two cable gear change: diameter (Ø7mm), height (12,5mm) and wrench size (2x SW8).

The trunnion for all Vespa scooters PK-XL2, HP and Cosa FL with the so called one cable gear change are slightly different from the trunnion used for the two cable gear change: diameter (Ø7mm), height (12,5mm) and wrench size (2x SW8). Due to its higher height this trunnion is also perfect for the clutch arm.

Trunnion kit vespa BGM

Cable barrels

The cable barrels fit all BGM and Piaggio inner cables. This system allows the cable to move freely in the barrel when actioned.

Further information in our previous article about transmission cables.

The cable barrels with diameter Ø8 and height 9mm are perfect for all Vespa scooters except for PK, PK-S and PK-XL.

The cable barrels with diameter Ø9 and height 11mm fit all PK models before PK-XL2.