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Flowed Racing Crankshaft SERIE

PRO by W5 for Vespa 200 Rally
VSE1T 33997 ->/P200E/PX200 E
disc valve, stroke 57,0mm, conrod 110,0mm,
pin 16mm, valve timing: 138°
/6° post TDC
finely balanced


Flowed racing crankshafts are the hottest new crankshaft upgrade in the racing world. There´s been a lot of experimentation that has resulted in the innovations we see here establishing themselves. In our SERIE PRO line, we have upgraded crankshafts from the German tuning master WORB5, based on MAZZUCHELLI (PX) and TAMENI (T5) shafts.


The crankwebs have been specially modified and gas flowed. The German word ‘gelippt’ (=flowed) has established itself as the description of this new hit. The shaft contour is designed to guide the fuel mix through the crank flange instead of hitting it on entrance. This keeps your fuel flow moving steadily instead of being blocked or creating unnecessary turbulence. Flange modification allows more usable volume. Compression sinks, more fresh fuel can flow in and a higher fill is achieved. This interaction allows higher speed ranges and pumps up performance. Additionally, the crankshafts are finely balanced; the connecting rod swings at 12 o`clock. Give your T5 a real treat when you outfit it with this racing shaft.


Conclusion: higher performance than regular racing crankshafts with less vibration.


Flowed racing crankshaft / stroke 42-57 mm / connecting rod 105-110 / 24/25 mm, M12

Flowed racing crankshaft, with ø 95 mm crankweb (flywheel side), ø 97.9 mm crankweb (disc valve side), balanced at 12 o'clock, lower connecting rod bearing = silver bearing, 105 mm connecting rod (125/150 cc) or 110 mm connecting rod (200 cc), 42 mm stroke (T5) or 57 mm stroke (PX), oil seal housing 24 mm, bearing housing 24 mm, stump cone with M12 thread, incl. connecting rod bearing.


SIP-TIP: new bearings, shaft gasket rings and woodruff key are a must, a SI 24-26 or PHB 28-30 carburetor kit, a touring exhaust and a VESPATRONIC/PARMAKIT ignition are worthwhile additions.

'Lipped' Racing crankshaft for rotary valved engine: Finely balanced to 12'o'clock, extreme crankweb modification, considerably improved gas flow when compared to other race orientated crankshafts.


The above mentioned inlet port timings are measured while looking at the crankshaft with the clutch shaft facing away from the person measuring it. For example '138°/6° after Top Dead Centre' (TDC) means the inlet opens at 6° after TDC and remains open for another 138°.

Please consider that the given inlet port timings are not always 100% accurate, due to the fact that these crankshafts being modified by hand!

Customers also searched for this article with:  flowed race crankcase, flowed race crankshaft, race crankshaft, race crankcase, tuning crankshaft

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2,050g / piece
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icon scootermodels This product fits the following models
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
VESPA 200 Rally 200 VSE1T 2T AC `72-`79 33997 ->
VESPA COSA 1 200 VSR1T 2T AC `88-`91
VESPA COSA 2 200 VSR1T 2T AC `90-`96
VESPA P200E / PX200 E 200 VSX1T 2T AC `77-`86
VESPA PX200 E `98 / Millenium 200 VSX1T 2T AC `98-
VESPA PX200 E Lusso/ EFL/ Arcobaleno / Elestart 200 VSX1T 2T AC `83-`97

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