DE

EN

FR

NL

IT

ES

GR

CS

PT

JP

PL

HU
 
You are here:
WebshopVespa Smal...Spare Part...Gear Box -...Input Shaft Assembly 20-18-14
 Your Shopping Cart
Your shopping cart is empty.
calculate shipping Live! Shipping Costs Calculation
 Your Notepads
notepad icon  Please login to use the Notepads.
webshop icon All Webshop
Your Scooter
Show only articles for selected scooter.
Most Popular Articles

 
Error Unfortunately, the selected article is out of production.
prev Pictures may look differentnext

Input Shaft Assembly 20-18-14

-10 teeth, 4-speed/PK, DRT
"short 4th gear", for Vespa
50 S 2°/Special V5B3-4T/SR/SS
/90 R/SS/100 2°/125/PV/ET3
/PK50-125/S/XL/XL2

Clean gear changes while you are accelerating can be decisive over defeat or victory. It is almost an art to be able to setup your gear ratios ideally to match the area of your rev range where maximum power is available (the power band). The VESPA gear box components have seen a lot of experimentation and development in recent years. DRT are at the forefront of this research and have suitable gear box parts available to suit most possible motor setups.

The problem of a clean gear change between 3rd and 4th gears, especially with performance enhanced motors, is shared between both the large and small frame VESPA motors. DRT offers new gear ratio setups with their range of input shaft assemblies. Maximum engine revolutions in 4th gear with a 150 kg load over a longer distance or race use of the 4th gear, everything is possible.

 

DRT input shaft assemblies are made of a tougher than standard grade of steel and then hardened through tempering. They are therefore extremely durable and so offer an ideal extension to the vast range of existing gear box components available. The gear ratios are much easier to adjust to the particular motor characteristics required. Most of the input shaft assemblies are equipped with a fine M11 grade thread and the nut to fit is also included.

 

Conclusion: These DRT input shaft assemblies are essential for all serious racers and sprinters. Rally going scooterists have also learnt the benefits of top quality adjustable gear box ratios.

 

SIP-TIP: If you want to raise the ratio of your gear box start with the primary drive gears. The input shaft upgrade is first, followed by the adjustment of the individual gear cogs on the output shaft. Never forget to order a new gear selector cruciform (at best the DRT item) and fresh gear box oil. Last but not least the SIP gear box shaft assembly spacers help you find the ideal output shaft assembly end float for safe and enduring use of your motor.

 

You can choose from the following DRT input shaft assemblies:

The DRT input shaft 'extra-short fourth gear' with 20-18-14 and 10 cog teeth respectively. For those who are only unsatisfied by their fourth gear ratio and find the normal ratio available from DRT (#40442400) too tall. In combination with a cog with 46 teeth it shortens the gear ratio from 2.09 to 2.30, a cog with 47 teeth results in a ratio of 2.35.

These extra short fourth gears were originally inspired by the short fourth gear cog produced by ZIRRI, which represented for years the only possibility of modifying your transmission ratio in this way. Then came the Italian race series boom and DRT let off their fireworks of gearbox components.

The version RACING is produced for SIP on special request. It is made of best german steel. Difficult to modify, very tough and needs a special heat treatment i production. This steel is the best material DRT gets to make gear kits. Attention! When mounting a DRT Racing input shaft, please make sure that the gearbox is precisely distanced. It might me necessary to use a spacer for the kickstart shaft and modify the original first gear. For further information please visit the official DRT homepage.


OEM Numbers (for the purpose of comparison)  Cluster Scp 4^z20 710 extracorta (2.30) (DRT)


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


icon explos Spare Parts Catalogue
This article can be found in the following exploded drawings ... go Go to Exploded Drawings!
Recommendations
Accessories
zoom 
40431770 $103.10
zoom 
88510000 $1.17
zoom 
40431710 $104.00
Our Alternatives
for this item
zoom 
40442171 $119.37
zoom 
40442400 $125.71
zoom 
11237700 $51.55
zoom 
40430313 $125.71
zoom 
4044710K $179.97
Customers choice
might interest you...
zoom 
15335000 $141.98
zoom 
88510000 $1.17

 
$125.71
Art.No.
40440710
362g / piece
Stock on hand   Amount

share

Product forums
 
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 50 / N 50 V5A1T 2T AC `63-`71 not in series
VESPA 50 L 50 V5A1T 2T AC `66-70 not in series
VESPA 50 R 50 V5A1T 2T AC `69-`83 not in series
VESPA 50 Revival 50 V5R1T 2T AC `90- not in series
VESPA 50 S 50 V5SA1T 2T AC `63-`84 not in series
VESPA 50 Special 50 V5A2T 2T AC '69-'72 not in series
VESPA 50 Special 50 V5B1T 2T AC '72-'75 not in series
VESPA 50 Special 50 V5B3T 2T AC '75-'83 not in series
VESPA 50 Special Elestart 50 V5B4T 2T AC '75-'76 not in series
VESPA 50 Special Elestart 50 V5B2T 2T AC `72-`75 not in series
VESPA 50 Special Elestart 50 V5A3T 2T AC '69-'72 not in series
VESPA 50 SR / Sprinter 50 V5SS2T 2T AC `71-`79 not in series
VESPA 50 SS / Super Sprint 50 V5SS1T 2T AC `65-`71 not in series
VESPA 90 90 V9A1T 2T AC `63-`84 not in series
VESPA 90 Racer 90 V9SS2T 2T AC `71-`74 not in series
VESPA 90 SS Super Sprint 90 V9SS1T 2T AC `65-`71 not in series
VESPA 100 (UK) / 100 Sport (US) 100 V9B1T 2T AC `78-`90 not in series
VESPA 125 125 VMA1T 2T AC `65-`67 not in series
VESPA 125 Primavera 125 VMA2T 2T AC `67-`83 not in series
VESPA 125 Primavera ET3 125 VMB1T 2T AC `76-`90 not in series
VESPA PK 50 50 V5X1T 2T AC `82-`84 not in series
VESPA PK 50 S / Elestart 50 V5X2T 2T AC `82-`84 not in series
VESPA PK 50 S Lusso / Elestart 50 V5X2T 2T AC `85-`88 not in series
VESPA PK 50 SS / Elestart 50 V5S1T 2T AC `83-`86 not in series
VESPA PK 50 XL / Elestart 50 V5X3T 2T AC `85-`90 not in series
VESPA PK 50 XL FL 50 V5N1T 2T AC `90- not in series
VESPA PK 50 XL HP 50 V5N2T 2T AC `91-`91 not in series
VESPA PK 50 XL N NUOVA 50 V5X5T 2T AC `89-`90 not in series
VESPA PK 50 XL Rush / Elestart 50 V5X4T 2T AC `88-`90 not in series
VESPA PK 50 XL2 / Elestart 50 V5X3T 2T AC `90- not in series
VESPA PK 50 XLS 50 V5S2 2T AC `86- not in series
VESPA PK 80 S / Elestart 80 V8X5T 2T AC `82-`86 not in series
VESPA PK100 S / Elestart 100 V9X1T 2T AC `82-`84 not in series
VESPA PK100 XL 100 V9X2T 2T AC `86-`90 not in series
VESPA PK125 125 VMX1T 2T AC `82-`85 not in series
VESPA PK125 ETS / Elestart 125 VMS1T 2T AC `84-`85 not in series
VESPA PK125 N NUOVO (FL) 125 VMX7T 2T AC `90-`91 not in series
VESPA PK125 S / Elestart 125 VMX5T 2T AC `82-`84 not in series
VESPA PK125 XL / Elestart 125 VMX6T 2T AC `86-`90 not in series
VESPA PK125 XL2 125 VMX6T 2T AC `90- not in series

Legend: Quantity In Stock
close

This article is in stock and ready to be shipped immediately. Our warehouse is fully stocked.
This article is in stock. This item is in stock in sufficient quantity.
This article will soon be sold out. This item will be sold out soon.
This item is ordered by us especially for you. Deliverytime might take more than 3 weeks. You cannot cancel this order any more. This item needs to be ordered especially for you. The expected delivery time is about 3 weeks.
This article is currently not available but will be back in stock soon. This item is currently not available but will be back in stock soon.
This article is currently not available. This item is currently not available. You can order it nevertheless. The expected delivery time is about 3 weeks.