Wasp Wideframe Tuning

bgm SUPERSTRONG Vespa Wideframe GS

The proven bgm SUPERSTRONG clutch is now also available for the Vespa GS150 / GS160 and SS180 models.

bgm SUPERSTRONG clutch Vespa Wideframe

Ready-to-install coupling for your Wideframe Wasp

The bgm PRO coupling is delivered ready for installation. The scope of delivery includes

  1. the assembled coupling,
  2. a new lock washer,
  3. Clutch cover gasket and
  4. Crescent wedge

We also recommend the same Pressure plate and the separating mushroom to replace, available here in a practical set!

The Superstrong GS coupling replaces the serial coupling of the GS / SS models 1: 1 and can usually * be used without further modifications. The clutch is available with 22 teeth (like original) or with 23 teeth (longer stocky). Helical teeth for use with the standard 67-tooth primary gear.

The bgm SUPERSTRONG 2.0 Ultralube coupling combines:

  • extreme durability,
  • absolute reliability and
  • easy operation

It is the foundation of any solid Vespa engine tuning. The CNC-manufactured clutch basket has excellent concentricity and extremely high torsional rigidity. The Vespa clutch thus offers perfect coupling behavior with a clearly defined grinding point and clean separation of the clutch linings.

It is suitable for that Touring riderwho values ​​high quality, as well as ambitious ones Racer, the one extremely resilient and stable coupling .

Wasp Wideframe Tuning


The latest generation of Superstrong clutches now has an innovative new technology: Ultralube.
Ultralube pumps (through precisely defined bores and centrifugal force) transmission oil both into the highly stressed hub profile (between clutch basket and clutch hub) and onto the clutch linings themselves.
This in the Vespa area unique technology makes the legendary Superstrong 2.0 clutch even more stable than it already is. A clutch designed to last.


The ready-to-install clutch is designed for a power range up to approx. 20PS / 22Nm by means of the mounted clutch springs. Reinforced springs (sold separately, bgm PRO XXL Reinforced clutch spring) expand the performance range of the clutch to over 40 hp. It is still easy to operate.


The scope of delivery includes the complete ready-to-install clutch with bgm PRO Cosa clutch facings and ten BGM PRO XL springs. A new O-ring for the clutch cover and a new crescent wedge are also included.


We also recommend a low-alloy gear oil of classes API GL3 / GL4 for high-performance engines in order to prevent the clutch from slipping even under extreme loads. This also applies to our bgm Superstrong couplings. The old engine oil specification SAE30 corresponds to today's transmission oil specification SAE 85W / 90. We recommend this as a lubricant bgm PRO Street gear oil (BGM2025, corresponds to specification API GL-3).

* In some cases it may be necessary to rework the clutch cover and arm, see Instructions & Video:

Instructions for installation and adaptation

You can also find the installation instructions here: Instructions

Tool list:

TIPP: Toptul tool

  • Ratchet; SW10
  • Slotted screwdriver sizes 5 to 6
  • Ratchet; SW14
  • Open-end wrench SW19
  • Torque wrench up to 100Nm
  • Clutch holding tool
  • Clutch puller

Item list, alternatives and accessories

bgm PRO Touring Alu Vespa Clutch Lining Cosa

Vespa Cosa clutch plates bgm PRO Touring Alu

bgm PRO Touring Alu - our new clutch linings from bgm PRO - now retrofit a Vespa Cosa clutch with the properties of the Honda CR80 clutch linings

The bgm PRO Touring Aluminum facings are greatly improved clutch discs for all Cosa clutches. Revolutionary clutch linings in the Honda CR80 style with significantly more surface, but that Plug & Play fit into the normal Cosa couplings!

bgm PRO Touring Alu Vespa Clutch Lining Cosa

Clutch linings BGM PRO TOURING Alu type COSA2

  • Perfect symbiosis of racing technology and reliability for touring riders
  • Suitable for all conventional Cosa2 clutch baskets (strap width as original, 14mm)
  • Aluminum carrier material with reinforced contact surface on the tabs
  • Sinter pad material such as Honda CR80 in a wide design

The bgm PRO Touring aluminum pads combine the advantages of the popular CR80 racing pads with the high demands of touring riders.

Buy clutch linings here

Vespa Cosa clutch upgrade


The linings use an aluminum carrier, the lugs of which have a large contact surface for the clutch basket. This makes the coverings very stable over the long term. The slow shearing of the tabs, which often occurs with conventional decks with steel girders, is completely eliminated due to the large contact surface. The aluminum also makes the coupling more thermally resilient. This is a great advantage in extreme situations (e.g. starting with a heavy load on a steep mountain pass), but also offers a reassuring reserve in everyday life. The width of the flaps is made to fit precisely, so that the pads are almost free of play in the basket.


The lining material for the clutch discs is the same for the bgm PRO TOURING aluminum linings high quality sintered material as used for the CR80 racing pads. Due to the larger contact surface in the TOURING variant, the coupling is softer and not aggressive. The large support surface also improves durability.

Vespa clutch facing Cosa



The bgm PRO TOURING aluminum clutch linings are available as 1: 1 replacement for conventional Cosa2 clutch facings designed. They harmonize perfectly with the standard steel discs.
The thickness of the pad package corresponds to that of the original, which means that no shims or spacers have to be used. The pads fit into all serial clutches of the Vespa Cosa2 models, into the PX125-200 models from year of construction 1998 as well as into all vehicles that have been retrofitted with a Cosa2 clutch. The linings are also compatible with clutches / clutch baskets based on the Cosa2 technology, e.g. clutch –SC-, MMW, Scooter & Service or Ultrastrong.  (Strap width as original = 14mm)



The pads are not suitable for clutches / baskets that have been specially manufactured to hold the CR80 clutch pads, e.g. BGM PRO Superstrong 2.0 CR80, ONKEL MIKE 'DDOG' CNC or similar (strap width CR80 = 16mm)


The set includes:

  • 1x clutch cover plate (one-sided covering)
  • 3x clutch friction disks (facing on both sides)

Sufficient for a Cosa2 coupling.

CONCLUSION: The BGM PRO TOURING aluminum clutch linings are an ideal upgrade for your Vespa Cosa2 clutch.

Buy clutch linings here
bgm PRO - Ultralube Superstrong Vespa clutch

We have now made our best Vespa clutch even better

The latest version of our Vespa clutch is the Superstrong 2.0 Ultralube ©. Suitable for all engines, from the original Vespa PX125 to the 40HP Monster.

We use the experience gained from the wide range of applications with the Superstrong 2.0 Ultralube around.

Patented lubrication of the coupling

Due to a new design of the clutch basket, the transmission oil can get into the clutch while driving and there the Thrust washer and the polygon for power transmission lubricate!

The proven technology of the CR pads ensures absolute control and precise gear changes, no matter how much torque and power pulls on the rear wheel.

With the new Ultralube technology, the Superstrong 2.0 has risen to the next level of development and is therefore a Guarantee for long-term unadulterated driving pleasure.

Unique lubrication - less wear

As the only coupling in the Cosa design, the Ultralube offers the advantage that the components for power transmission are lubricated by the gear oil and thus the Wear of the hub significantly reduced is.

The BGM Superstrong 2.0 Ultralube is currently available in the CR version in the following gear ratios:

Suitable for the primary gears with 67 and 68 teeth

  • BGM8420; Clutch -BGM Pro Superstrong 2.0 CNC Ultralube, type Cosa2 / FL (CR80) - for primary gear 67 / 68T - 20 teeth
  • BGM8421; Clutch -BGM Pro Superstrong 2.0 CNC Ultralube, type Cosa2 / FL (CR80) - for primary gear 67 / 68T - 21 teeth
  • BGM8422; Clutch -BGM Pro Superstrong 2.0 CNC Ultralube, type Cosa2 / FL (CR80) - for primary gear 67 / 68T - 22 teeth
  • BGM8423; Clutch -BGM Pro Superstrong 2.0 CNC Ultralube, type Cosa2 / FL (CR80) - for primary gear 67 / 68T - 23 teeth

Suitable for the primary gears with 64 and 65 teeth

  • BGM8322; Clutch -BGM Pro Superstrong 2.0 CNC Ultralube, type Cosa2 / FL (CR80) - for primary gear 64 / 65T - 22 teeth
  • BGM8323; Clutch -BGM Pro Superstrong 2.0 CNC Ultralube, type Cosa2 / FL (CR80) - for primary gear 64 / 65T - 23 teeth
  • BGM8324; Clutch -BGM Pro Superstrong 2.0 CNC Ultralube, type Cosa2 / FL (CR80) - for primary gear 64 / 65T - 24 teeth


Suitable for the primary gears with 62 and 63 teeth

For powerful engines or for coordination with other auxiliary shafts, we also offer our stable and extremely smoothly running primary drives with straight teeth:

  • BGM8623; Clutch -BGM Pro Superstrong 2.0 CNC Ultralube, type Cosa2 / FL (CR80) - for primary gear BGM 62 / 63Z (straight teeth) - 23 teeth
  • BGM8624; Clutch -BGM Pro Superstrong 2.0 CNC Ultralube, type Cosa2 / FL (CR80) - for primary gear BGM 62 / 63Z (straight teeth) - 24 teeth
  • BGM8625; Clutch -BGM Pro Superstrong 2.0 CNC Ultralube, type Cosa2 / FL (CR80) - for primary gear BGM 62 / 63Z (straight teeth) - 25 teeth

The design and technology of the Ultralube © is protected by a utility model!


Our best Vespa clutch is back in stock

In time for the summer season is ours bgm Superstrong clutch for the Vespa Largeframe Models available again. The robust and reliable coupling is so popular that we were unfortunately sold out at times.

New generation of friction disks for the Vespa clutch

From now on we deliver the bgm superstrong and the Superstrong CR with a new generation of steel discs. Did you know that the steel discs should be installed in a certain order?

Vepsa Superstrong clutch for Vespa Largeframe P1390241

Vepsa Superstrong clutch for Vespa Largeframe P1390241

The new clutch is each disc is clearly markedso that it is always clear in which position it should find its place.

bgm Superstrong - new friction discs for the Vespa clutch

bgm Superstrong - new friction discs for the Vespa clutch

All lenses have been redesigned and the fit has been optimized.

The disc at position two was given a defined curvature in a specially designed radius so that a clean separation behavior is achieved under every load condition when the clutch is operated.

The steel disks are subject to series testing, during which we always keep an eye on the concentricity and the planar quality, as well as the material quality and hardness. All steel disks are here in the 10hrc range.

Except for the optimization of the steel discs, nothing changes in the proven and stable concept of the Superstrong clutch for Vespa PX, T5, Sprint, Rally etc.


The Superstrong coupling family receives in the large and Smallframe Growth.

For the Largeframe We equip the tried and tested models Superstrong with a 24 tooth DRT pinion off to the translation on an original 65 teeth primary gear to extend.

Especially with the current cylinders from Malossi and Poliniwhich provide a very high torque, it makes sense to lengthen the translation to convert the potential into speed.

bgm super strong 005

Im Smallframe Sector an additional coupling spider is suitably deposited for DRT auxiliary shafts in the Superstrong clutches offered. DRT auxiliary waves are a useful addition to almost all engine concepts in the SF area in order to adapt the transmission to a more sporty driving style. There are one here Variety of gradation variants to disposal. The auxiliary shafts offered by DRT are about 1,5mm higher.

Here the DRT variant:

04.12. 2013 021

and the regular version:

04.12. 2013 020

So that you don't become too strong Spacer for the clutch cover, we have adapted the Superstrong accordingly for this area of ​​application.

In order to keep the two variants apart, we have equipped the DRT version with a clearly visible collar.

On the left the regular version and on the right the DRT variant with collar.

04.12. 2013 025

Both couplings are available immediately.

vespa coupling BGM8099

Vespa clutch

[youtube] MJKxoBYbrbQ [/ youtube]

The bgm PRO Superstrong Cosa coupling is the plug n play solution - Made in Germany.

This quality Vespa clutch is with 20,21,22, 23, XNUMX and XNUMX teeth available: Vespa clutch

You get a ready-to-install Vespa Cosa clutch with the supplied reinforced clutch springs in a performance range of 20HP / 22Nm works fine.
With separately available springs with a higher spring rate *, the clutch can keep up with setups without complaint significantly above 30 PS and is still easy to operate.


  • One-piece CNC milled clutch basket - Made in Germany.
  • The extremely robust construction offers perfect and precise guidance of the hub thanks to the shaft teeth.
  • The hub is made of high-strength steel to prevent the hub from cracking.
  • Thanks to the use of ten springs, there is sufficient spring force even for high-torque setups with little effort on the clutch lever.
  • Clutch basket hardened by nitriding, worn out clutch baskets are a thing of the past.
  • Always precise cutting thanks to the pressed sintered bushing.
  • Every coupling is subjected to a quality control. In this way we guarantee that we will deliver a functioning and ready-to-install coupling.

The scope of delivery includes the complete ready-to-install clutch with bgm PRO Cosa clutch linings and ten reinforced springs. A new O-ring for the clutch cover and the crescent wedge.



The number of teeth on the clutch is important for the length of the total reduction. This can also be varied. Possible combinations:

  • Original 20 teeth: 21T, 22T
  • Original 21 teeth: 20T, 21T, 22T
  • Original 22 teeth: 20T, 21T, 22T
  • Original 23 teeth: 21T, 23T

For models up to and including 150cc, a small cast aluminum lug in the motor housing must be removed to mount the clutch. This can be easily snapped off with larger pliers. With some clutch covers, minimal material has to be removed from the drip nose at 12 o'clock in the area of ​​the radius.

The Vespam clutch can be installed in almost all engines of the so-called Vespa Largeframe Class. These are all vehicles whose chassis prefix is ​​three-digit (e.g. VNB, VNL, VNX etc., the addition 1T, 2T, 3T is not taken into account) and which have the carburetor installed directly on the engine housing (not in the frame or on the cylinder). On some old vehicles before the Vespa PX era, the thin washer (1,5mm) under the clutch has to be replaced with that of the PX models (3,3mm Item No. 7671297

* We use bgm PRO XL clutch springs:

Spring rate N / mm
Original Piaggio 4,0
Worb5 XL 6,2
bgm PRO XL 6,5
Worb5 XXL 7,1
Malossi 7,9
Worb5 XXXL 8,9

New Vespa clutch for Smallframe

After the success of the BGM Superstrong Vespa clutch for the Vespa Largeframes, we also have a solution for the Vespa Smallframes developed. Now in Scooter Center Vespa shop available

As with the Vespa clutch for the large engines, the Components made in Germany.

Brief overview:

  • Made in Germany
  • higher transmission power due to more surface
  • longer service life due to more material
  • Even contact pressure thanks to 16 bgm PRO XL clutch springs
  • perfect coordination option
  • Mobile with Vespa PK XL1 and PK XL2 cover
  • stable coupling hub with internal thread for standard pullers
  • extremely resilient, also for engines with 30HP +
  • Plug & Play coupling is delivered ready for installation
  • Spacer available

Superstrong - Extremely high performance

The clutch hub as well as the cover and thrust washer are made 42CrMo4 manufactured. The force is from bgm Racing red clutch plates transfer. The design of the clutch linings in the Vespa PK-XL / Vespa V50 version offers more space to transmit the torque. In this context, more material naturally also means a longer service life.
Vespa clutch bgm Superstrong for Vespa Smallframe

16 springs for even contact pressure

When it comes to springs, we use tried and tested methods. sixteen bgm Pro XL springs ensure even contact pressure.

Vespa clutch bgm Superstrong for Vespa Smallframe

Due to the number of springs and the arrangement on the largest possible extent, a very even pressure behavior is achieved. This effectively prevents the two pressure disks from tilting or locking.

Thanks to the perfect coordination of spring stiffness and number, paired with the stiff design of the pressure plates, the clutch can be operated easily even with a PK-XL1 clutch cover.
The contact pressure of the bgm Pro XL springs and the coefficient of friction of the Racing red pads have a Test in our X-Mas duel already withstood the 30PS.

vespaVespa clutch bgm Superstrong Smallframe

Highly stable & well thought-out coupling hub

The clutch hub is designed for a primary with a shock absorber and has an M28x1 internal thread for pulling off. (The extractors of the Vespa fan wheels with electronic ignition fit there.) Thanks to the internal thread, the area around the cone could be made much more massive. The more stable design without the senseless weakening by an unnecessary keyway makes the hub the first choice for every load. We recommend our for assembly Coupling nut and threadlocking. To dismantle the clutch or to change the linings in the engine, our bgm multitool BGM8819 should be used.

Vespa clutch bgm Superstrong for Vespa Smallframe

Plug & Play Ready-to-install delivery

We offer you the bgm Superstrong for the Vespa clutch for Smallframe Fully assembled with 4-disc bgm Racing red clutch linings and 1 mm steel discs.

Vespa clutch bgm Superstrong for Vespa Smallframe

For PK XL1 & XL2 clutch cover

The pressure plate is for holding a PK-XL2 pressure plate designed and can therefore be used on a PK-XL1 or on a PK-XL2 clutch cover.

Optional spacers available

Depending on the combination of engine housing, auxiliary shaft and clutch cover, it may be necessary to place the clutch cover underneath. For this we offer you a matching spacer set.

Matching Vespa models

(PK-XL1 or PK-XL2 clutch cover required)

  • Vespa 50 PK XL2 (V5N1T)
  • Vespa 50 PK XL2 HP (V5N2T)
  • Vespa 50 PK SS (V5S1T)
  • Vespa 50 PK XLS (V5S2T)
  • Vespa 50 PK (V5X1T)
  • Vespa 50 PK S (V5X2T)
  • Vespa 50 PK S Lusso (V5X2T)
  • Vespa 50 PK XL (V5X5T)
  • Vespa 50 PK XL Rush (V5X4T)
  • Vespa 50 PK N (V5X5T)
  • Vespa 50 PK XL2 (V5X3T)
  • Vespa 80 PK S (V8X5T)
  • Vespa 125 PK (VMX1T)
  • Vespa 125 PK S (VMX5T)
  • Vespa 50L (V5A1T)
  • Vespa 50N (V5A1T)
  • Vespa 50 (V5A1T - 1963)
  • Vespa 50 S (V5A1T - 1964)
  • Vespa 50 Special (V5A2T)
  • Vespa 50 Special Elestart (V5A3T)
  • Vespa 50 Special (V5B1T)
  • Vespa 50 Special Elestart (V5B2T)
  • Vespa 50 Special (V5B3T)
  • Vespa 50 Special Elestart (V5B4T)
  • Vespa 50 SR (V5SS2T - 1975-)
  • Vespa 90 (V9A1T)
  • Vespa 125 Nuova (VMA1T)
  • Vespa 125 Primavera (VMA2T)
  • Vespa 125 ET3 (VMB1T)