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- -15%
- New
MALOSSI - Sprocket set for vespa gear - sport
6720145
€539.00
€458.15
Save 15%
Handling 4-5 days
VESPA SMALL FRAME GEAR CLUSTER AND GEARWHEEL KIT Although it shares several elements with the motorcycle world, such as the gears, the Vespa can be considered the forefather of the scooter, yet it poses a number of challenges. Lacking a conventional front and rear sprocket, the Vespa does not allow for the variation of its wheelbase. This makes it complicated to carry out any necessary modifications to support every performance increase – with the correct final drive ratio. Initially, at Malossi, we sought a solution by creating a new gear kit that coupled with the stock components ( art.…
Attention: Universal Product
This product is indicated as universal, it may not be compatible with your motorcycle.
Please make sure before purchasing it
This product is indicated as universal, it may not be compatible with your motorcycle.
Please make sure before purchasing it
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VESPA SMALL FRAME GEAR CLUSTER AND GEARWHEEL KIT
Although it shares several elements with the motorcycle world, such as the gears, the Vespa can be considered the forefather of the scooter, yet it poses a number of challenges.
Lacking a conventional front and rear sprocket, the Vespa does not allow for the variation of its wheelbase. This makes it complicated to carry out any necessary modifications to support every performance increase – with the correct final drive ratio.
Initially, at Malossi, we sought a solution by creating a new gear kit that coupled with the stock components (art. 6716207), but we didn't stop until we found the perfect fit.
This is how our complete Vespa gear cluster and gearwheel kit was developed, featuring a different, more appropriate gear ratio set-up.
It is available in two versions, Sport and Racing, and it can be installed on various models, ranging between the Special 50 and the ET3 125.
What’s its distinguishing feature? Both sets of sprockets have the same number of teeth (Z) - calculated to provide an optimised transmission ratio - in both the Sport and Racing versions, while the module (that is the tooth profile) is different.
Furthermore, our designers have developed two distinct gear ratio set-ups for the second, third, and fourth gears, specifically calculated for this purpose:
- for engines focused more on torque, in the Sport version art. 6720145
- for engines tuned for the track, in the Racing version art. 6720146.
Technical specifications
- TAll gear clusters and gearwheel kits have been manufactured exclusively using materials that exceed our rigorous standards and are systematically verified through stringent testing.
- The final machining is performed on CNC (Computer Numerical Control) machines. Subsequently, the assembly is subjected to a thermo-chemical case hardening treatment at 900°C to achieve the required hardness and resistance.
- Finally, the size and quality of the finished gears are verified on Zeiss three-dimensional inspection machines.
The gearwheels are produced using CNC gear cutting machines and are precision ground on the contact surfaces. At these points, small oil pockets have been created to ensure the best lubrication of these critical areas. Lightening holes have been drilled in all gearwheels where possible, except in the contact section area between the gearwheel and the gear selector spider, thus preventing the creation of stress points.
4-speed gear ratios:
| Art. 6720145 SPORT | Art. 6720146 RACING | |
| 1st gearwheel | Z10-Z58 | Z10-Z58 |
| 2nd gearwheel | Z14-Z54 | Z15-Z54 |
| 3rd gearwheel | Z17-Z49 | Z18-Z49 |
| 4th gearwheel | Z20-Z46 | Z20-Z46 |
Products reserved exclusively for racing in specifically designed locations according to the provisions of the competent sporting authorities. We disclaim all liability for improper use
Documents and videos
Vehicle compatibility (11 vehicles)
Vespa(11)
- ET3 Primavera 125 2T
- ETS 125 2T
- PK 125 2T
- PK 50 2T
- PK FL 125 2T
- PK FL 50 2T
- PK HP FL 50 2T
- PK XL 125 2T
- PK XL 50 2T
- Primavera 125 2T
- SPECIAL 50
6720145
Data sheet
- Country of origin
- Italy
- Vehicle brand
- Vespa
- Vehicle
- Vespa ET3 Primavera 125 2T
Vespa ETS 125 2T
Vespa PK 50 2T
Vespa PK 125 2T
Vespa PK FL 50 2T
Vespa PK FL 125 2T
Vespa PK HP FL 50 2T
Vespa PK XL 50 2T
Vespa PK XL 125 2T
Vespa Primavera 125 2T
Vespa SPECIAL 50
Components and spare parts
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