Attention, prohibited on the road! Reserved for competition only, in no case complies with traffic laws.

Here is the most huge kit released for vertical minarelli (booster). This kit is the RACING model from PARMAKIT (above the TP RACE and RACE ONE). This is the Ø50mm aluminum model kit for long race 43mm (also exists for original race). Can be installed with a long 85mm long rod stroke with a 5mm shim!

Photo du cylindre sur le kit 85cc parmakit avec vu sur l'échappement a barrette du scooter minarelli vertical scooter (booster, bws)

This kit is therefore only reserved for the PARMAKIT GP1 43mm long stroke crankshaft and 80mm connecting rod or 85mm connecting rod but with a 5mm shim . It cannot be fitted with another crankshaft. With its diameter of 50mm and a long stroke 43mm, the actual displacement is 84.43cc, relatively huge for the small engine of the booster.

Photo du cylindre Parmakit et de son échappement a barette pour kit 58cc sur moteur minarelli vertical scooter (booster, bws)

Attention the assembly of the vilo requires modifications and therefore the assembly of this cylinder also requires it! The outer diameter of the skirts is 54.50mm at the bottom and 55mm at the top. You will therefore need to machine the casing skirt foot. This kit has really been worked to the maximum in order to bring all the assets together.

Photo du kit 85cc Ø50mm PARMAKIT RACING course longue 43mm bielle 80mm minarelli vertical scooter (booster, bws)

First let's talk about the cylinder, it is a high-end alloy model treated with high quality nykasil, the diagrams are very good, the intake is completely revised for a good filling, the base has been redesigned, also will have to align your casings to the latter. The exhaust has finally been completely revised to finally give way to a large exhaust with barette! PARMAKIT has opted for a pure flat vertex.

Photo du kit 85cc Ø50mm PARMAKIT RACING course longue 43mm bielle 80mm minarelli vertical scooter (booster, bws) de ses lumieres et de ses diagrammes

This piston has lateral grease nipples and is in a hard chrome domed pre-ground segment. Very good material. The cylinder head is a female model (the cylinder head enters the cylinder head) in order to have a chamber / bore alignment always perfectly centered!

Photo du kit complet avec ses joints, son piston, ses clips, axex ainsi que les segment pour course longue 43mm bielle 80mm minarelli vertical scooter (booster, bws)

In addition this system also makes it possible not to break the cylinder head gasket which passes very limited with a bore such ... This cylinder head is provided with a studied cooling, a polished hemispherical high compression chamber adapted to the flat piston ...

YAMAHA stud for vertical minarelli (booster rocket, bw's ...)