Racing Cylinder 125 cc “legal”

for Vespa P80X/
X80 E/
usso
cast iron
5 ports

57mm
stroke 48mm
with cylinder head
with jet
with part certification

TUNING ROAD – for everyday use Product description
Information : Please include the full VIN (Piaggio frame number) of the scooter to be repaired with your order to assist with the correct frame identification! Article with official parts certificate! If you present yourself with this document at the “T
V” or another monitoring institution, the inspector can transfer the values for noise, power and maximum speed directly into the test certificate of your vehicle; this means you save time and costs for these measurements, which usually amount to several hundred euros. With the test certificate, you can then have the changes entered in the vehicle documents at the registration office and from now on you are completely legal on the road with more power! When ordering, please state the chassis number of your vehicle (VIN)! The expert (e.g. T
V) will then check whether the components are installed as described in the certificate. The VIN on which the certificate is issued does not have to be in the area of use of the certificate, i.e. a certificate for a Malossi 210 can also be issued on the VIN of a PX80 (“V8X1T…”). The issuing of the certificate to one single chassis number serves as copy protection. Please use the free text field at the end of the online order to state your VIN or add it to your order by phone. The parts certificate article cannot be sent to you without the VIN. For combinations of performance-enhancing components, please note the tuning kits we have put together for you (e.g. 1010410H). The parts certificates contained therein describe the joint installation of all parts included in the scope of delivery. Attention with mixed installation:
If, for example, you properly install a Polini 177 cylinder with certificate (14000800H) in an original Vespa PX before ’89, the officially recognised expert should accept the modification according to the expert opinion and issue you with a corresponding test certificate. If, for example, you also install a different primary gear ratio or another additional performance-enhancing part (mixed installation), the maximum speed of the vehicle will theoretically change compared to the certificate. In this case, the expert may no longer accept the values from the appraisal and say that he must measure again.
It is therefore often advisable to carry out modifications and registrations in a certain order. E.g. for an oldie Vespa, e.g. VNA: First install a PX-200 engine in its original condition. Then register the original PX values (noise, power, displacement…) in the papers of the VNA. Then retrofit the Malossi cylinder and show up for another test with the parts certificate. Although the VNA is not included in the scope of the Malossi-210 parts certificate, the engine (engine number) installed in the VNA (PX200) is described in the certificate of the cylinder. Often the expert understands this and then takes over the values of the PX 200 parts certificate also for the VNA with the PX200 engine from the example.
Even if you combine two individual items that BOTH have a certificate, e.g. racing cylinder and racing exhaust-Performance, the expert may insist on new measurements. This is because the values of the certificated exhaust are based on use with the original cylinder and the values of the certificated racing cylinder are based on the original exhaust. Neither expert opinion states how the two modifications together affect the engine….
Notes (please check with your preferred test centre):
Not every inspection organisation (GT
, T
V, Dekra, K
S, etc.) and not every test centre may carry out registrations.
Vehicles built in 1989 or later are excluded from performance-enhancing measures because the exhaust behaviour changes. (In individual cases, however, we have heard that registrations were also granted for newer vehicles).
We have made the experience that entries in the vehicle documents usually work without problems if they are properly prepared:
You should have spoken to the expert beforehand.
The vehicle should be in good working order, especially the brakes, when it comes to the acceptance of performance upgrades.
The modifications should be easily recognisable and comprehensible to the inspector (documents ready and modified vehicle parts exposed and clean, identification numbers easily recognisable, etc.).
Even if your vehicle has been modified according to the installation instructions and you show up at the inspection station with a parts certificate, the inspector may refuse to register your vehicle because, for example, the general condition of the vehicle is too poor, e.g. the brakes do not work or the lights, indicators, horn, etc. are defective. It is not sufficient to install the performance-enhancing parts and carry the parts certificate with you. This is only permitted for the journey to the test centre. The conversion must be approved by an expert (test certificate) and entered in the vehicle documents. Light motorcycles have been, since January 2013, no longer legally restricted to a maximum speed of 80 kph. This opens new possibilities as far as street legal tuning is concerned. Due to the fact that the original PIAGGIO PX 80 cylinders are no longer being produced, the choice when replacement was necessary, was restricted between a reconditioned original item or a performance cylinder with either 135 or 139cc. The second ‘solution’ provides a problem of legality if you only possess a driving licence which allows you to ride machines of up to 125cc. Immediate relief can be obtained here with the 125cc race cylinder, which we have made legal for road use through full part conformity approval. This means the cylinder can be registered in your vehicle documentation by the relevant authorities without having to finance the expensive performance, braking and noise emission testing procedures out of your own pocket! To minimise heat reduction we have equipped this cylinder with a METEOR piston that has two 1.2mm piston rings. This also ensures a reduction in wear and maximum durability in use. The specially modified cylinder head provides the correct compression ratio! If the engine is old or has a high mileage, a general overhaul is recommended before this conversion. More specifically the crankshaft bearings, shaft oil seals and gear-selector cruciform will always require replacement during a major service of any two-stroke Vespa engine. The cylinder kit provides an excellent basis for further tuning measures, although you should be aware that the part conformity approval will then lose its validity. If the engine casings are going to be split anyway the opportunity presents itself to simultaneously exchange and/or upgrade the crankshaft. During this open-heart surgery why not consider optimising a few essential gearbox components

Conclusion:
The race cylinder 125cc, with part conformity approval, offers beginners and advanced tuners plenty of reliable power based on our collective years of tuning experience. All this with comfortable registration possibilities and a clean conscience while out riding due to being completely road-legal!
TIP: Check over your ignition for full operation and at least renew the spark plug, adjust the timing to 18
before top dead center. Make sure the brakes are in fully serviced when increasing the performance of the motor, our Performance brake shoes are capable of the job. A good set of shock absorbers ensure you do not completely lose your grip!