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Countershaft 12-16-20-21 teeth,

4th gear, PINASCO with primary
gear, 67 teeth for Vespa GT 1°
/3°/GTR/TS/150 GL 2°/150
Sprint 1°/3°/V/P125-150X 1°,
Ø 90 mm, long 4th gear incl.
gearwheel 4th gear, 35

PINASCO have revived production of their classic gear box conversion kit to accompany their 177cc performance cylinder kit for the 125-150cc VESPA motors: The PINASCO FourDrive. The complete kit consists of a modified input shaft gear assembly and a taller fourth gear to replace the existing fourth gear cog on the output shaft. The resulting gear ratios are very well suited for use with the 177cc cylinder kit from the same manufacturer or other similarly torquey 177cc kits.

The process of changing up through the gears from third to fourth gear is made easier and, according to motor setup, impressive top speeds can be achieved.


From the first through to the third gear the existing gear ratios remain the same as the original setup with 12, 16 and 20 teeth respectively. The amount of teeth on the fourth gear however has been decreased to 21 (originally 25 teeth). The fourth gear on the output shaft side also included in the kit, has been shortened by one tooth to 35 teeth, the same as the latest original PIAGGIO setup on the PX 125-150cc VESPA models. The primary driven cog has, similar to the standard item, 67 teeth. The FourDrive gear box conversion kit is produced using polished, tempered steel and is very easily mounted as it comes with the gear cogs pre-assembled onto the input shaft assembly. This conversion kit fits all VESPA 125 GT 1°/3°/GTR/TS/150 GL 2°/150 Sprint 1°/3°/V/P125-150X 1° models.


Conclusion: A complete gear box solution especially for PINASCO fans with performance orientated 177cc large frame VESPAs.


SIP-TIP: To fine tune your gear box setup you can make use of the DRT output shaft gear cogs and also different sized clutch and primary driven cogs. Always install and replace ALL of the smaller primary drive components during each major service. The securing plates on both sides of the primary drive, input shaft holding nut, tab washer and also the input shaft needle bearings should all be replaced for save and enduring use of your motor. Last but not least do not forget to order fresh gearbox oil, gaskets and all relevant oil seals!

OEM Numbers (for the purpose of comparison)  097922 (PIAGGIO), 10270806 / 25270806 (PINASCO)

Customers also searched for this article with:  Multiple Gear, primary drive assembly

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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 125 (T2/125) (D) 125 VNB1-6 2T AC `59-`65 VNB5-6T, for reduction gear ratio
VESPA 125 GT / 125 Sprint 125 VNL1-2 2T AC `61-`73 VNL2T 30001 -> 30742
VESPA 125 GT / 125 Sprint 125 VNL1-2 2T AC `61-`73 VNL2T 34501 ->
VESPA 125 GTR 125 VNL2T 2T AC `68-`78
VESPA 125 TS 125 VNL3T 2T AC `75-`78
VESPA 150 GL 150 VLA1T 2T AC `62-`64 VLA1M 050119 ->
VESPA 150 Sprint 150 VLB1T 2T AC `65-`74 -> 35095
VESPA 150 Sprint 150 VLB1T 2T AC `65-`74 38601 ->
VESPA 150 Sprint Veloce 150 VLB1T 2T AC `69-`79
VESPA P125X 125 VNX1T 2T AC `77-`82 -> 146313
VESPA P150X / PX150 E 150 VLX1T 2T AC `78-`85 -> 264564

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