Primary transmission pair Pinasco z24 on bell 72 for Vespa 50/125 Special-Primavera-ET3
Z 24 X 72 with straight teeth
with shock absorber
Vespa 50 V5A1T N,L,R
Vespa 50 PK
Vespa 90 V9A1T
Vespa 125 Primavera VMA1>2T
Vespa 125 Primavera ET3 VMB1T
Complete thermal group BCR (102cc) for Vespa 50 V5A1T N/L/R/50 Special V5A2
Vespa 50 V5A1T N,L,R, Vespa 50 Special V5A2>3T, Vespa 50 Special V5B1>4T, Vespa 50 PK, Ape 50
Bore--> 55 mm
Ape 50
Bore--> 38.4 mm
Complete thermal group BCR (75cc) for Vespa 50 V5A1T N/L/R/50 Special V5A2
Vespa 50 V5A1T N,L,R, Vespa 50 Special V5A2>3T, Vespa 50 Special V5B1>4T, Vespa 50 PK, Ape 50
Bore--> 47 mm
BCR thermal group (50cc) for Vespa 50 V5A1T N/L/R/50 Special V5A2>3T/50 Special V5B1>4T/50 PK/
Vespa 50 V5A1T N,L,R, Vespa 50 Special V5A2>3T, Vespa 50 Special V5B1>4T, Vespa 50 PK, Ape 50
Bore--> 38.4 mm
Ape 50
Bore--> 47 mm
Thermal group VMC RV-A 100 (100cc) for Vespa 50 V5A1T N/L/R/50 Special V5A2
Vespa 50 V5A1T N,L,R, Vespa 50 Special V5A2>3T, Vespa 50 Special V5B1>4T, Vespa 50 PK, Ape 50
VMC has created a superior class cylinder with this lamellar for the RV-A 100 cylinder.
The technical solutions on this cylinder allow for performance that was previously reserved for long-stroke cylinders.
The cylinder is made of aluminum with a Nikasil-coated barrel and lamellar intake.
The head is CNC machined, with a viton gasket and secured with eight M6 bolts.
It has a bore of 54 mm and a stroke of 43 mm, 8 transfers
Exhaust port with bridge with an outlet diameter of 28 mm and stud spacing of 52 mm
Phases 113° intake and 171° for exhaust
The manifold has an internal diameter of 25 mm and is equipped with a four-petal reed pack.
Included in the kit are the original valve closure cap screws and a kit of paper gaskets of different thicknesses.
Recommended carburetor size: 19 - 24 mm
![](/images/gruppo-termico-lamellare-srv-102cc-o22-24-25.400x400.17250.jpg "Pinasco "Zuerino" SVR thermal group (102cc) for Vespa 50 V5A1T N/L/R/50 Special V5A2>3T/50 Special V5B1>4T/50 PK/")
Pinasco "Zuerino" SVR thermal group (102cc) for Vespa 50 V5A1T N/L/R/50 Special V5A2>3T/50 Special V5B1>4T/50 PK/
Vespa 50 V5A1T N,L,R, Vespa 50 Special V5A2>3T, Vespa 50 Special V5B1>4T, Vespa 50 PK, Ape 50
The Pinasco 102cc SRV "Zuerino" Ø 55mm thermal group is a new product dedicated to the world of Vespa 50 and Ape 50 with a 43mm stroke. Based on the famous Zuera 135cc, the 102cc SRV "Zuerino" features a transfer system very similar to that of its bigger brother, using the same RD350-type reed valve pack and the same flow guide, it mounts a single-ring piston with bi-conical pin, the new central spark plug head with 8 studs and centering bushings that definitively eliminates the problem of leaks and consequent performance drops with a compression ratio of 12.3:1.
The Pinasco 102cc SRV is a generous engine designed to make the most of power at low revs, its exhaust port has been designed to work correctly with original exhausts and commonly called "banana" stamped exhausts but can also be used in more advanced setups.
![](/images/gruppo-termico-zuerino-srv-102cc-o19-19-pk.400x400.19924.jpg "Pinasco "Zuerino" SVR Thermal Group (102cc) for Vespa 50 PK (manifold Ø19-19)")
Pinasco "Zuerino" SVR Thermal Group (102cc) for Vespa 50 PK (manifold Ø19-19)
50 HP
The Pinasco 102cc SRV "Zuerino" Ø 55mm thermal group is a new product dedicated to the world of Vespa 50 with a 43mm stroke.
Based on the famous Zuera 135cc, the 102cc SRV "Zuerino" features a transfer system very similar to its bigger brother, uses the same RD350 type reed valve pack and the same flow guide, mounts a single-ring piston with bi-conical pin, the new central spark plug head with 8 studs and centering bushings that definitively eliminates the problem of leaks and consequent performance drops with a compression ratio of 12.3:1.
The Pinasco 102cc SRV is a copious engine designed to make the most of power at low revs, its exhaust port has been designed to work correctly with original exhausts and stamped mufflers
commonly called "bananas" but can also be used in
more advanced setups.
It does not require special modifications to the engine case, it can be used with
all crankshafts on the market including the original ones, its
installation allows the use of engine
