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63 mm "MHR 177" racing cylinder kit compatible with your Vespa large-frame scooter. You can find a list of the exact models below in the drop-down menu under "Compatible with the following models."
The 177 cc aluminum cylinder is designed for a 57 mm stroke and features a 63 mm bore, 7 overflow channels, and a two-piece exhaust port. The coated cylinder bore, combined with the aluminum body, ensures effective heat dissipation and makes this tuning cylinder a solid foundation for performance-oriented large-frame engines. The bolt-on exhaust flange gives you additional flexibility during further assembly if your engine setup is designed specifically for tuning.
The package includes the cylinder, the piston with piston ring, and the cylinder head.
Note: Please observe the installation direction during assembly. The piston is installed with the arrow pointing toward the exhaust on the exhaust side.
You can find matching crankshafts, exhaust systems, and carburetors for tuning in the accessories section.
A quality product from the Italian manufacturer Malossi.
| Manufacturer | Malossi |
| Material | Aluminum |
| Displacement | 177 ccm |
| Crankshaft stroke | 57 mm |
| Ø piston pin (B) | 15 mm |
| Ø cylinder neck | 67 mm |
| Ø Outlet outside | 37 mm |
| Ø outlet inside | 33.9 mm |
| Number of fixing points | 4 pcs |
| Outlet type | straight |
| Hole spacing outlet | 55 mm |
| Area of application | Tuning |
| Decompressor | No |
| Camouflaged | No |
| Vespa | Vespa PX, T5, Cosa - P125X · VNX1T · 1977 - 1982 (PX alt) Aussenverschluss , P125X · VNX2T · 1981 - 1984 (PX alt) Innenverschluss , PX125 E · VNX2T · 1982 - 1993 / Lusso / Arcobaleno , PX125 · VNX2T · 1993 - 1996 Classic , PX125 · VNX2T · 1997 - 1999 (Disc) , PX125 · ZAPM471 · 2001 MY Katalysator (Millenium) , P150X · VLX1T · 1978 - 1993 , P150S · VBX1T · 1978 - 1990 , PX150 · ZAPM742 · 2001 MY Katalysator (Millenium) , Cosa 125 · VNR1T · I 1988 - 1992 II 1992 - 1998 , Cosa 150 · VLR1T · I 1988 - 1991 II 1992 - 1995 |
Accessories & related products
VMC 63 mm cylinder kit "177 Crono" | Vespa Largeframe
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Polini crankshaft "Racing" 57 mm | Vespa PX, P, Cosa, GTR, TS, Sprint V.
Dimension needle bearing: 15x19x20 · Manufacturer: Polini · Material: Steel · Cheek type: standard · Crankshaft stroke: 57 mm · Ø piston pin (B): 15 mm · Connecting rod length center-center: 105 mm · Total length of crankpin on clutch side: 59 mm · Thread type: MF12x1.25 (fine pitch thread) · Thread type: MF12x1.5 (fine pitch thread) · Total length crankpin ignition side: 77.35 mm · Ø crank webs: 98 mm · Ø Connecting rod eye: 19 mm · Thread length: 14.5 mm · Thread length: 15.5 mm · Ø Bearing seat (clutch side): 25 mm · Ø Bearing seat (ignition side): 25 mm · Area of application: Tuning · Wide crank webs: 39 mm · Control time according to O.T: 5 ° · Control time according to O.T: 138 °
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Polini crankshaft "Racing" 60 mm long-stroke | Vespa PX, P, Cosa, GTR, TS, Sprint V.
Dimension needle bearing: 15x19x20 · Manufacturer: Polini · Material: Steel · Cheek type: standard · Crankshaft stroke: 60 mm · Ø piston pin (B): 15 mm · Connecting rod length center-center: 105 mm · Total length of crankpin on clutch side: 59 mm · Thread type: MF12x1.25 (fine pitch thread) · Thread type: MF12x1.5 (fine pitch thread) · Total length crankpin ignition side: 77.35 mm · Ø crank webs: 98 mm · Ø Connecting rod eye: 19 mm · Thread length: 14.5 mm · Thread length: 15.5 mm · Ø Bearing seat (clutch side): 25 mm · Ø Bearing seat (ignition side): 25 mm · Area of application: Racing · Wide crank webs: 39 mm · Control time according to O.T: 5 ° · Control time according to O.T: 138 °
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Dell'Orto SI 24.24E carburetor without separate lubrication | Vespa PX200, Rally 200
Width: 78 mm · Manufacturer: Dell'Orto · Component group Carburetor: Carburetor complete · Material: Aluminum · Nominal diameter: 24 mm · Carburetor type: SI · Total length: 125 mm · Mounting type: Screws · Ø fuel hose connection: 8.3 mm · Height: 81 mm · Nozzle size: 118 · Ø Inside entrance: 23.8 mm · Ø Output inside: 23.8 mm · Air filter connection thread: M5x0.8 (standard thread) · Mixed oil connection: No · Vacuum connection: No · Choke control: Cable choke · Area of application: Standard · Area of application: Tuning · Choke nozzle size: 60 · Nozzle block: BE3 · Camouflaged: No · Piaggio OEM number: E.5474 · Piaggio OEM number: E5474 · Piaggio OEM number: 131038 · Piaggio OEM number: 132371
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Dell'Orto main jet (80 - 140 of your choice) SI carburetor
Manufacturer: Dell'Orto · Camouflaged: No · Component group Carburetor: Spraying · Material: Brass · Quantity: 1 pcs · Carburetor type: SI · Nozzle type: Main nozzle · Total length: 10 mm · Piaggio OEM number: 089145 · Piaggio OEM number: 93660 · Piaggio OEM number: 94090 · Piaggio OEM number: 97436 · Piaggio OEM number: 120520 · Piaggio OEM number: 132368 · Piaggio OEM number: 132453 · Piaggio OEM number: 150047 · Piaggio OEM number: 150474
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