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Flowed Racing Crankshaft SERIE

PRO by W5 for Vespa 125 GTR 2°
/TS 2°/150 Sprint V 2°/Super
2°/P125-150X/PX125-150 E
disc valve, stroke 57,0mm, conrod 105,0mm,
pin 15mm, 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.


The timings stated above were determined viewing in the direction of the clutch side. That means: "138°/6° after TDC: Inlet timing begins 6° after TDC and stays open for 138°.

Please note that the angular degrees given here are approximate values, as the crankshafts are reworked 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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icon scootermodels This product fits the following models
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
LML Star 125 2T/ DLX / Via Toscana / Deluxe 125 2T AC
LML Star 150 2T / DLX / Via Toscana / Star / Stella / Belladonna RV 150 2T AC
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
VESPA 125 GTR 125 VNL2T 2T AC `68-`78 145901 ->
VESPA 125 TS 125 VNL3T 2T AC `75-`78 18139 ->
VESPA 150 Sprint Veloce 150 VLB1T 2T AC `69-`79 294260 ->
VESPA 150 Super 150 VBC1T 2T AC `65-`79 412374 ->
VESPA COSA 1 150 VLR1T 2T AC `87-`90
VESPA COSA 1 125 VNR1T 2T AC `88-`91
VESPA COSA 2 150 VLR2T 2T AC `91-
VESPA COSA 2 125 VNR2T 2T AC `91-
VESPA P125X 125 VNX1T 2T AC `77-`82
VESPA P150 S 150 VBX1T 2T AC `78-`90
VESPA P150X / PX150 E 150 VLX1T 2T AC `78-`85
VESPA PX125 2011/ 30 Jahre 125 ZAPM74100 2T AC `11-
VESPA PX125 CAT 125 ZAPM50100 2T AC `07-
VESPA PX125 E 125 VNX2T 2T AC `81-`83
VESPA PX125 E `98 / Millenium 125 VNX1T 2T AC `98-`05
VESPA PX125 E Lusso/EFL/Arcobaleno / Elestart 125 VNX2T 2T AC `83-`97
VESPA PX150 2011 150 ZAPM74200 2T AC `11-
VESPA PX150 E `98 / Millenium 150 VLX1T 2T AC `98
VESPA PX150 E Lusso/EFL/Arcobaleno / Elestart 150 VLX1T 2T AC `83-`97

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