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Long Stroke Flowed Crankshaft

SERIE PRO worbspeed by Worb5
for Vespa T5
disc valve, stroke 54,0mm, conrod 105,0mm,
pin 16mm,
finely balanced

Long stroke, flowed crankshafts are the newest update for long stroke shafts. In our SERIE PRO line, we have modified shafts from the workshops of German tuning master WORB5, based on MAZZUCCHELLI and TAMENI crankshafts.


The crankwebs have been specially modified and streamlined. The word "gelippt" (=flowed) has established itself as the description of this new hit. Shaft contour design guides the fuel mix through the crank flange instead of hitting it face on when entering. This will keep your fuel flow moving steadily instead of getting blocked or creating unnecessary turbulence. Flange modification allows more usable volume, crankcase compression sinks, more fresh fuel flows in resulting in higher fill. This interaction results in higher speed ranges and increases performance Additionally, shafts are finely balanced, the connecting rod swings at 12 o'clock.


Conclusion: higher performance than normal long stroke crankcases, and less vibrations.


Long stroke flowed crankshaft/ stroke 54mm / connecting rod 105mm / M12

Long stroke flowed crankshaft, with ø 95mm 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, 54 mm stroke, oil seal housing 24 mm, bearing housing 25 mm, stump cone with M12 thread, incl. connecting rod bearing.


SIP-TIP: Try out a variety of head/base gasket thicknesses.

Customers also searched for this article with:  long stroke flowed crankcase

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2,500g / piece
Stock on hand   Amount


Product forums
icon scootermodels This product fits the following models
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
VESPA T5 / Elestart 125 VNX5T 2T AC `85-`90 w/o separate lubrication
VESPA T5 Classic 125 VNX5T 2T AC `92-`95 w/o separate lubrication

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