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Exhaust Vespa PK 50 bgm PRO BigBox TOURING

New exhaust Vespa PK50 & PK125 racing exhaust BigBox TOURING bgm PRO

NEW: Exhaust bgm PRO BigBox TOURING for Vespa PK50 & PK125

Quite secretly a new one racing exhaust for Vespa PK has crept into our shop. Today we present the new Vespa PK exhaust from bgm PRO.

Vespa PK racing exhaust - bgm PRO BigBox Vespa PK | HANDMADE in EUROPE

Vespa PK Rennauspuff - bgm PRO BigBox Vespa PK | HANDMADE in EUROPE

Watch this video on YouTube

We have two versions:

for Vespa PK50 & PK80 | BGM1050PK
Exhaust -BGM PRO BigBox TOURING PK- Vespa PK50, PK80 (S / XL / XL2 / HP / SS / Lusso)
for Vespa PK125 & PK75 | BGM1125PK
Exhaust -BGM PRO BigBox TOURING PK- Vespa PK125 (S / XL / XL2 / ETS), Motovespa PK75 (S / XL / Junior)

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The history of this exhaust system lies in the fact that there were no original Piaggio exhaust systems for the PK 50 models. During the development of a new exhaust we recognized the potential and were able to develop a sport exhaust with Original optics, low noise level and a significant increase in performance. The bgm PRO quality exhaust is now handmade in Europe Y es immediately available: bgm PRO BigBox TOURING Vespa PK

bgm PRO BigBox Touring VS Sito PLUS

On the dynamometer it looks like this:

bgm PRO BigBox for your Vespa PK

Vespa PK exhaust with more power, discreet look & low noise

The bgm PRO exhaust in the TOURING version thus provides the discreet look and acoustics of an original Vespa exhaust, combined with a sports exhaust characteristic with high torque and wide power band. This system was originally designed as a replacement for the original Piaggio exhaust systems, which are no longer available. In the meantime we have developed it to a full fledged, Modern sports exhaust system.

We attached great importance to a good performance with a Discreet noise level as well as a good fit.

Significantly more power
Quiet racing exhaust
good fit
Original optics
High and early torque
Wide speed range
More final speed
Very unobtrusive
Fits without modifications
Handmade in Europe

The bgm PRO Sport TOURING harmonizes very well with a standard engine as well as with the classic tuning cylinders like the

Polini 75-112,
DR75-102 or
Malossi 75-112
Polini 133

Easy mounting

The relatively far down split manifold allows a quick disassembly of the exhaust body without having to loosen the manifold on the cylinder. The connection is secured by tension springs in a stable but quickly detachable way.

For safety reasons we recommend to start with 2-4 numbers more than a standard exhaust.

SCOPE OF DELIVERY

exhaust body
exhaust manifold
Exhaust Springs
Cylinder / manifold gasket

Vespa PK Exhaust TIP:

Adjust spraying, see above.
Some heat-resistant sealing compound ( accessories for the exhaust) between manifold and exhaust body keeps this area permanently clean.

Exhaust PK 50: Matching Vespa PK

The PK exhaust fits the following Vespa PK 50 and Vespa PK 80 models:

Exhaust PK 125: Matching Vespa PK

The PK exhaust fits the following Vespa PK 125 and Vespa PK 75 models:

Order here: modern Vespa PK exhaust

30/06/2020/by Heiko Lepke

Testing Vespa exhaust on dynamometer BMG PRO BigBox Sport Malossi

News, SC workshops, Vespa

Vespa exhaust BGM BigBox Sport on dynamometer

Michael Holden from England is a loyal customer of Scooter Center. On his way to his run “holidays in Sauerland” he paid us a short visit and leapt the chance to test it Vespa exhaust BigBox Sport on the dynamometer.

Vespa PX 200 with Malossi 210 and PHBH30 carburetor

His Vespa is a German Vespa PX200, which he bought when he was deployed in Germany with the British Forces.

The engine is a simple one and is made up of an “old” Malossi 210 cylinder, DellOrto carburetor PHBH 30, Mazzucchelli racing shaft with 57mm stroke and a Taffspeed MK4.

Michael tells us that the engine was tested with the same parts in England on a Dynojet before he left. The result was 17.88BHP (Brake Horse Power). Giving us a value to compare with, when measuring and to assess whether the engine's performance went down. The old 210 with the MK4 demonstrated the predicted performance. The difference in values from the Dynojet and from our dynamometer is only a few tenths. So you can see, the two results are comparable.

The 90s: Taffspeed MK4 Vespa exhaust

At the time (1996 the first systems with TÜV certificate have been sold in Germany) the MK4 was a good all-rounder with positive performance. A positive performance was reached before having to respond. Overall you can say that an engine is regarded as one that “drives well” on the street, when it reaches at least 10HP from 5000 revs / min and when performance and torque increase with increasing revs. However, the MK4 is an exhaust with just below 18Nm at about 6000 revs / min and therefore forces the driver to change down to a lower gear when being in 4th gear below 90km / h and higher acceleration is demanded.

The modern racing exhaust: BGM PRO BigBox Sport

When the MK4 was modern, no-one would have thought that exhausts, which look like lunchboxes, would ever reach such a performance.

For a while now more powerful exhausts are being developed with looks that resemble the original.

Leading to the BigBox:

Combining the performance of an expansion exhaust chamber with the looks of an original exhaust.BGM tuning

BigBox Sport vs Taffspeed MK4

A comparison of BigBox Sport and Taffspeed MK4.

In contrast to the MK4, the BigBox Sport can add further torque and performance from 4500 revs / min. Comparing the engines on the street, let the scooter seem to drive more easily, because there is more torque for acceleration. The additional torque becomes crucial when the scooter is driven at least 5500 revs / min on a motorway or highway.

Michael was convinced of the BigBox Sport. He wouldn't even let us detach the test exhaust and continued his trip to the Sauerland with a fitted BigBox Sport.

Test the new Vespa exhaust now:

Would you like to know what happens if we fit the Bigbox Sport to your engine? Send us a date inquiry:

pruefstand@scooter-center.com

01/06/2015/0 Comments/by Jenny Hass

Vespa touring exhaust BGM PRO BigBox TOURING Vespa 200cc

News, Test bench, Vespa

New Vespa touring exhaust

We received the first production patterns of the BigBox Touring for 200cc Vespa PX engines today.

Assessing looks and fit are part of a normal sample exam. And so are test runs on ours Scooter Center P4 dynamometer.

We already mentioned in previous entries relating to this Vespa exhaust, that the BigBox Touring has a dramatically smaller U-bend than that Big Box Sports, his larger sister.

the missing black, heat-resistant cover layer makes the BigBox Touring look somewhat naked. We also attach significance to closely assessing all the joints without the cover layer, though.

Test assembly on a Vespa Sprint with a 200cc engine

One of the first parts of the exam was the assembly in a Vespa VLB (Sprint). Usually space issues arise when fitted in combination with a 200cc PX engine. Especially around the center stand, in particular in the “U's” and the laps for the stand springs. Depending on the assembly of the exhaust, stand feed rubbers might collide with the U-bend.

We especially focused on these narrow spaces to see whether everything fits. The BigBox fits even to vehicles with a two-spring system at the center stand, which has only been introduced to the German market. The stand feed rubbers have a save distance to the hot U-bend.

Just like his bigger sister Big Box Touring comes with a solid clamp and additional holders for exhaust springs.

You want to play it safe? our retaining plate including exhaust springs perfectly matches your BigBox.

Performance measurement Vespa exhaust

Once we agree with the looks, processing and fitting we continue with performance measurements.

First “testing victim” is a cast iron Polini with 207cc, SI24 carburetor in a standard Vespa PX200 engine.

Early torque for day to day use and touring

When developing the BigBox Touring we focused on having the possible torque available early and that there is a high amount of pressure in the exhaust with low revs.

The earlier and more homogeneous torque is provided by the engine, the nicer is a day to day drive. Our cast iron test engine by Polini with a BigBox touring reaches more than 18 Nm at 3900 rpm. Translated to the 4th gear this means smooth cruising at 50km / h with a very good potential to accelerate up to the final revs.

Increased transmission possible

Depending on the engine you fit the BigBox Touring on, an increased primary transmission can be used reasonably to go easy on revs while retaining the same cruising speed. Increasing transmission is easiest when using a clutch sprocket. the BGM clutch sprocket for Cosa clutches or a sustainable solution like ours BGM Superstrong clutch are very fitting examples. An increased transmission may increase the top speed by 5km / h at the same revs.