Vespa touring exhaust BGM PRO BigBox TOURING Vespa 200cc

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.