BGM Tuning
BGM PRO Vespa 177 Cylinder Kit PX COSA Sprint LML
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The bgm PRO 177 cylinder is a hard ceramic coated aluminum cylinder with 63mm bore. The coating (nickel silicon carbide) provides an extremely hard and durable raceway.
The piston has a high silicon content. As a result, it has lower thermal expansion, is more wear resistant and thermally very stable.
Two 1mm thick piston rings minimize friction, increasing performance and speed stability.
Will fit:
- LML 125 (2 stroke)
- LML 125 Deluxe (2 stroke)
- LML 125 DLX (2 stroke)
- LML 125 Stella (2 stroke)
- LML 150 Belladonna (2 stroke)
- LML 150 Belladonna RV (2 stroke)
- LML 150 DLX (2 stroke)
- LML 150 Star (2 stroke)
- LML 150 Via Toscana (2 stroke)
- Vespa (Motovespa) Vespa 125 CL (engine 9CL)
- Vespa (Motovespa) Vespa 150 CL (engine 9NC)
- Vespa (Motovespa) PX 125 Iris (engine 99M)
- Vespa (Motovespa) PX 150 Iris (engine 75M)
- Vespa (Piaggio) Vespa 150 Sprint Veloce (VLB1T)
- Vespa (Piaggio) Cosa 150 CL (VLR1T)
- Vespa (Piaggio) Cosa 150 CLX (VLR1T300)
- Vespa (Piaggio) Cosa 150 FL (VLR2T)
- Vespa (Piaggio) P 150 X (VLX1T, -1980)
- Vespa (Piaggio) PX 150 E FL (VLX1T, 1984-1997)
- Vespa (Piaggio) PX 150 E (VLX1T, 1981-1983)
- Vespa (Piaggio) Vespa 125 TS (VNL3T)
- Vespa (Piaggio) Cosa 125 CL (VNR1T)
- Vespa (Piaggio) Cosa 125 CLX (VNR1T300)
- Vespa (Piaggio) Cosa 125 CLX (VNR1T301)
The cylinder's port layout, with four main spill ports and two boost ports, is designed for plenty of low-end pressure.
Timing is 57mm stroke with 118° overflow to 171° exhaust angle.
The cylinder kit is designed as a plug 'n play solution, simply plugged in with SI carburetor and bgm big box touring the power is around 15hp and torque is 17 - 19Nm at the rear wheel.
With further expansion stages, 25 hp and more are no problem.
Low consumption values and the associated high range are another bonus
.- Cylinder material: aluminum
- Raceway: coated with nickel-silicon-carbide
- Bore: Ø 63mm
- Displacement 57/60mm Stroke: 177/187 cc
- Piston: cast piston with high silicon content and two 1mm steel piston rings
- Recommended pinch point: 0,8- 1,2mm
| General | |
|---|---|
| performance class: | sport |
| Gudgeon pins | |
| diameter: | 15 mm |
| Spark plugs | |
| thread type: | M14x1,25 |
| thread spark plug: | long |
| heat rating NGK: | B9ES |
| Cylinders | |
| displacement: | 177 cm³ |
| bore: | 63 mm |
| engine type: | 2-stroke |
| type of cooling: | air cooled |
| material: | aluminium |
| material piston cylinder surface: | Ceramic |
| cylinder head inclusive: | |
| cylinder gasket set inclusive: | |
| number of transfers (incl.boost ports): | 6 |
| number of boost ports: | 2 |
| shape exhaust port: | single port (oval) |
| exhaust mounting: | stub |
| diameter exhaust stub: | 37 mm |
| Pistons | |
| number of piston rings: | 2 |
| production method piston: | cast |
| Piston rings | |
| piston ring type: | common ring |
| Circlips | |
| circlip type: | C-type |
| wire size of circlip: | 1,0mm |
| Cylinder heads | |
| cylinder head type: | one piece |
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