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WebshopVespa PX/T...Spare Part...Gear Box -...Input Shaft Assembly 12-16-20
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Input Shaft Assembly 12-16-20

-25 teeth, DRT "short 4th
gear" for Vespa 125 GT 1°/3°
/GTR/TS/150 GL 2°/150 Sprint
1°/3°/V/P125-150X 1°,
12-16-20-19, bearing seat
inside 40mm

The Spitfire was not just good for keeping ME109s on the go, it also does wonders for the PX gearbox, thanks to the boys at DRT.

This newly produced input shaft assembly is CNC machined from tough steel and then hardened. It is therefore more able to withstand extreme levels of performance, convinces through durability and so presents an optimal addition to the performance orientated input shaft assemblies available on the market at this present time. They also enable a more precise gear ratio tuning process, so allowing the creation of a gear box perfectly assembled for the individual needs of each particular motors power delivery characteristics.

 

The standard input shaft assembly comes equipped with 4 gear cogs and they have 12, 13, 17 and 21 cog teeth respectively. The DRT ROAD version comes with 12-13-16-20, so the 3rd and 4th gear is a little shorter.

 

The DRT Racing one with 12-13-16-20 is again shorter in the 4th gear.

 

Standard or mildly tuned motor setups can also benefit from the improved gearbox precision that this Spitfire conversion kit provides. The following gear cog combinations have, over time, proved successful: The PX125 with 58, 42, 38 and 36 teeth on the respective cogs and for the PX150 and 200cc motors cogs with 57, 42, 38 and 35 teeth respectively.

 

For tuned motors the DRT gear cogs are the most appropriate, the 1st gear having 55 teeth, the 2nd gear cog with 41 teeth, the 3rd gear cog with either 36/37 or 39 teeth and the 4th gear cog with 36/35 teeth enables clean acceleration through the whole of the gear range. Varying the number of teeth on either the clutch cog or the primary driven cog can also raise or lower the overall gear ratio of your motor.

 

Helpful Hint: Some DRT gear cogs are not compatible with this input shaft conversion kit. These are for the 2nd gear the gear cog with 40 teeth and for the 4th gear the cogs with either 37, 34 or 33 teeth. Use the kickstart gear 11352600 in combiantion with the Spitfire one.

Conclusion: DRT make simple and effective gear ratio tuning possible for everyone.

 

SIP-TIP: Do not forget to order a new fixing nut for the input shaft, a safety washer, new bearing and fresh gearbox oil for safe and enduring use of your motor. A new primary drive repair kit should also be included in every major service.

 

New: Vespa 125 GT 1°/3°/GTR/TS/150 GL 2°/150 Sprint 1°/3°/V/P125-150X 1° pilots can be happy. DRT reduces with the 12-16-20-19 input shaft assembly the 4th gear. Best results in acceleration from the 3rd into the 4th gear possible!


OEM Numbers (for the purpose of comparison)  (PIAGGIO), ICLcl 726 (OLD-PX1^s) (DRT)


Customers also searched for this article with:  Input Shaft Cog Wheel Set


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icon scootermodels This product fits the following models
  VESPA
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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