bgm PRO touring CDI for IDM retrofit ignitions

--Original optics in conjunction with a optimized ignition curve for Vespa and Lambretta touring engines--

Our solution for IDM CDIs in touring engines

Use all IDM based ignitions (Vespatronic, Malossi VesPower, Polini IDM, Varitronic, Pinasco Flytech, Parmakit etc.) the same CDI.

The ignition curve of this CDI is based on high performance engines with a late use of power and high speeds designed.
On touring engines, with an early and high torque, this ignition curve is rather counterproductive. Here it often leads to engine jerks in the partial load range due to an ignition point that is too early for the low engine speed.

However, due to the large adjustment range (8 °) of the original CDI, the ignition point must be selected early. Otherwise, the performance in the upper speed range suffers, as the CDI already reduces the ignition point significantly here. We have addressed this problem and a solution developed:


Advantages of our bgm PRO CDI for IDM in tour setup

The bgm PRO CDI has a modified, optimized ignition curve. It offers high-torque touring engines that have a similar power / torque curve as an original engine, ideal working conditions. The adjustment of the ignition point is significantly less, the engine runs quieter and smoother and also develops more efficient, especially in the area above the peak performance (Overrev). As a result, you have an engine that much more tour-friendly is and usually something faster Is on the way.

  • Plug & Play
  • for Vespa & Lambretta
  • replaces the original IDM CDI
  • fits on the original mounting brackets from PK & PX
  • Tour-optimized ignition curve
  • no partial load jerking
  • higher performance
  • original optics
  • screw-in ignition cable

More efficient

Performance diagram measurement bgm PRO CDI for IDM ignitions

Power measurement diagram as PDF

Modern technology in a classic look

The technology of the bgm PRO CDI is housed in the vehicle-specific ignition coil housing from the time it was built. This means that the beautiful old look for classic Vespa and Lambretta is retained despite modern technology.
Compared to an original IDM CDI, that is Ignition cable can be screwed in. Ideal if the CDI should be positioned differently or simply the ignition cable should be replaced.


The perfect addition to high-torque tuning motors that are supposed to get even better.

bgm PRO Vespa pole wheel

Vespa pole wheel bgm PRO electronics

We have developed new fan wheels. With the bgm PRO pole wheel, a very high quality reproduction of the (no longer available) original Piaggio Vespa PK fan wheel is now available.
During the development of this new pole wheel, the tried and tested and the optics have been retained, while performance and quality have been optimized. For this we have invested in, for example, brand new molds and can now offer you the pole wheels that are in demand

  • optimized and in
  • super nice finish
  • fantastic quality too
  • offer a very fair price
  • = ideal for converting to fully electronic ignition of your Vespa

bgm PRO Vespa pole wheel


  • Weight Smallframe: 1.600 grams (for comparison: V50, PV, ET3, PK - orig. Up to 2.800 grams)
  • Weight Largeframe: 2.300 grams (for comparison: Sprint, PX, LML, Cosa - orig. Up to 3.200 grams)
  • High accuracy of the ignition timing
  • Very good concentricity
  • Balanced at the factory
  • Good magnetization
  • Higher performance through optimized wing area


The weight of the bgm PRO Vespa pole wheels is tailored to the respective purpose:

  1. The fan wheels for the Vespa Smallframe-Models are with 1600 grams perfect for the lively characteristics of the small engines.
  2. The fan wheels for the Vespa Largeframe-Motors offer with 2300 grams a wonderful mixture of a lot of smoothness and very good acceleration.

Basically, the pole wheels always require a 12V ignition base plate / alternator. This means that every previously contact-controlled motor can be converted to a fully electronic CDI ignition including voltage-controlled on-board electronics. We offer to do this complete sets with all parts required for retrofitting (see alternatives / accessories) for the ignitions:

Vespa ignition in a set


Vespa Largeframe 2300g, large cone, M12 (1978-) - PX, Cosa, LML 125/150 2-stroke
(Article: BGM8025RT)

For retrofitting everyone Largeframe Motors that already have the large cone (rotor thread M12, wrench size 18), but still have a contact-controlled ignition installed (approx. 1978-1981, PX, Sprint Veloce, GTR, Super, TS) Here the pole wheel and a new 12V ignition base plate are required. In later models (e.g. Vespa PX from around 1982, Cosa, LML) with factory-installed electronic ignition, this can continue to be used. If you convert to the BGM pole wheel, you benefit from significantly more lively engine characteristics with noticeably improved acceleration and higher engine power.


Vespa Largeframe 2300g, small cone, M11 (1957-1977) - Sprint, GT, GTR, Super, GL, VNA, VBA, VNB, VBB, Motovespa 125/150 S / N / L
(Article: BGM8032RT)

The most classic of all LargeframeEngines. Still has the old type of crankshaft with a thin (pointed) cone which can be recognized from the outside by the pole wheel nut with M11 thread and wrench size 14.
These motors always have contact ignition from the factory.
By converting the pole wheel, ignition and vehicle wiring harness, a modern vehicle electrical system is created that is absolutely maintenance-free and includes a powerful 12V alternator that provides a fantastic bright light. Starting at the first kick included.


Vespa Smallframe 1600g, small cone, M10 - V50, 50N, Spezial, SR50, Sprinter, SS50, SS90, V90, 90 Racer, V100, ET3, PV, PK S
(Article: BGM8033RT)

Suitable for everyone SmallframeMotors with a small cone (flywheel nut M10, SW14 or SW16). These motors always have contact ignition ex works (exception ET3 / PK).
By converting the pole wheel, ignition and vehicle wiring harness, a modern vehicle electrical system is created that is absolutely maintenance-free and includes a powerful 12V alternator that provides a fantastic bright light. Starting at the first kick included. PK models that already have a voltage regulator do not need a new wiring harness.


 Vespa Smallframe 1600g, large cone, M12 - PK XL / XL2, PK FL2, PK HP, PK125 ETS, Motovespa PK75 XL (96M / 104M), PK75 FL (127M / 128M)
(Article: BGM8034RT)

For Smallframe Motors that already have the large cone (flywheel thread M12, wrench size 18).
Replaces the original (no longer available) pole wheel 1: 1. If you convert to the BGM pole wheel, you benefit from a significantly more lively engine characteristic with noticeably improved acceleration.
It is also very popular on the older engines (with originally a small cone) if they have been converted to the more stable crankshafts of the Vespa PK XL or ETS.

Ignition -BGM PRO base plate HP V4.0 AC- Lambretta electronic ignition article no. 8030572

bgm Lambretta ignition base plate available again

The bgm ignition base plates and ignition kits are already standard when it comes to optimizing a Lambretta. For good reason, the electronic bgm ignitions are the great basis for one high quality engine.
The strong alternator guarantees perfect light output, the HQ ignition components a clean and powerful engine.

Ideal for upgrading a decrepit, contact-controlled electrical system to a modern, maintenance-free high-performance ignition.

Ignition base plate Electronic ignition BGM PRO Article no. 8030572

Very popular ignition

It can happen that there are delivery bottlenecks. But now the much sought-after Lambretta ignition is back in stock, just in time for the Eurolambretta or the many other meetings that are now pending.

Order ignition here



  • High light output thanks to the maximum number of windings
  • Proven excitation coil with copper plate for maximum reliability
  • Pickup with a carbon barrier layer for a clean ignition pulse
  • Neatly processed light coils
  • High quality solder joints
  • Gray and black bougier tube
  • Sufficient cable length for individual cabling
  • Can be combined with additional modules (PiFi, Kytronic, Agusto)

Compared to a conventional electronic ignition, the BGM ignition base plate has specially combined coil windings. This is the The efficiency of the alternator has been significantly improved again.

Available individually or in a set:

AC / DC?
The alternators are available as AC and DC versions:

  • AC = alternating current = light via alternator
  • DC = direct current = light via battery

The AC variant is best for converting to a good electronic ignition. In principle, the on-board network is retained as it was designed by Innocenti, albeit best with a fresh wiring harness.

The conversion to DC only makes sense with the simultaneous conversion to a sufficiently dimensioned battery (from 5Ah). Here, the entire luminous flux feeds only the battery via a so-called full wave regulator. This then supplies all consumers. The required full-wave controller is included in the corresponding AC set, please order the battery separately. The advantage lies in the perfect light without flickering, even when idling. The disadvantages are the required battery, the high charging losses in the lower speed range (controller gets very warm) and the necessary modifications to the wiring harness.


The DC ignition can also be used as an AC ignition at any time. To do this, connect the red / yellow cable to ground. The yellow cable must then be connected as a live cable to a conventional voltage regulator (e.g. BGM6690).

The ignition kits are available for both types of crankshafts in the Lambretta Series 3 models:

  • Small alternator cone: LI, LIS, SX, TV
  • Large alternator cone: GP / DL

Note: The BGM ignition was carefully designed and harmonizes perfectly with all common ignition components, especially with the BGM pole wheel.
So that the BGM ignition always finds optimal conditions, we include spacer plates for the pickup with version 4.0. This means that the base plate can also be combined with pole wheels whose trigger surface height (tear-off surface of the PickUp) is outside the norm (e.g. AF pole wheels) or if the tolerances of the motor housing and / or crankshaft overlap unfavorably.

Order ignition here
Vespa light switch

Light switch conversion bgm AC conversion to electronic ignition - Vespa V50 Special

Suitable for ours Cable harness for retrofitting For a low-maintenance, electronic 12V ignition for Vespas, we can now offer you the right Vespa light switch that combines all the necessary functions:

Vespa light switch


Safer with brighter lights, indicators and high beam

With a Bilux headlights A full high beam function is therefore available to you. With that, the Advantages of the 12V conversion take full advantage even when driving at night.

  • Turn signals right and left
  • High and low beam for a bilux bulb or optionally headlights on / off when using a socket bulb
  • Horn (AC)
  • Engine off / kill switch


Easy installation

The cable colors match our conversion wiring harness.


  • YELLOW, to the rear light and the city driving light if the headlight used offers this connection option
  • GREEN, excitation voltage from the motor to the kill switch
  • ORANGE, from the flasher relay to the flasher switch
  • WHITE, from switch to horn (AC)
  • BROWN, to the headlights, low beam
  • RED, from the voltage regulator to the switch
  • VIOLET, to the headlights, high beams
  • BLACK, from switch to handlebar, vehicle ground


  • ROSA, from the switch to the turn signal on the right
  • BLUE, from the switch to the turn signal on the left


Conversion of your Vespa V50 to 12V electronic ignition

What you need to convert your Vespa: