Crankshaft BGM PRO Touring for Motovespa GT160 (C09/M09)

High-quality forged crankshaft from BGM PRO for the larger Motovespa engines with 160cc. These engines use a mirror-symmetrical crankshaft as standard. This means the same cone type is used on both sides (magneto and clutch side are identically designed).

CLUTCH VARIANTS
BGM PRO took the opportunity during the crankshaft's design to produce two versions of the long-unavailable GT160 crankshaft.

• Clutch type Motovespa (as original Motovespa)

• Clutch type PX (compatible with PX-type clutches)

Anyone who wants to completely rebuild an engine to original specifications should use the crankshaft for the Motovespa clutch type.

Anyone who wants to use clutch types other than the original GT160 should use the crankshaft for the PX-type clutch type. This allows all clutches used in PX engines to be used without any further modifications.

MATERIAL
The Motovespa GT160 (actually 160 GT) crankshaft is manufactured from high-quality forged blanks. The forged material is significantly denser and more resistant to bending, making it perfect for use as a durable and strong crankshaft.

BEARING
The lubrication of the lower connecting rod bearing is done via two large lubrication slots and a total of four additional pockets on the sides. The SSC racing bearing and the side thrust washers ensure solid support. The lubrication of the upper connecting rod bearing is done via two lubrication holes. The INA piston pin bearing is included in the scope of delivery of the crankshaft.

CONCLUSION
All in all, the bgm PRO crankshaft offers the highest quality in all aspects with every component. Precision in manufacturing, materials used and, above all, the precise balancing leave nothing to be desired. This guarantees an extremely smooth and vibration-free engine run.

TIMING ANGLE/TUNING
With the original 57mm stroke, the original GT 160 cylinder has the following port timings:

• Piston clearance 0.5mm

• Intake angle: 131°

• Exhaust angle: 144°

• Transfer angle: 119°

• Blow-by angle: 12.5°

If the same cylinder is used with a 60mm stroke, the following port timings result:

• Piston protrusion: 1mm

• Intake angle: 132°

• Exhaust angle: 148°

• Transfer angle: 124°

• Blow-by angle: 12°

About the manufacturer BGM

BGM is a leading brand for high-quality spare parts and accessories for scooters, motorcycles and classic Vespa models, which stands for quality, precision and innovation. With a uncompromising “Made in Germany” philosophy, BGM develops durable products in cooperation with leading engineers and under strict quality controls. Whether restoring vintage vehicles or tuning modern scooters – BGM is the first choice for demanding riders. Thanks to first-class workmanship and a wide range, BGM offers ideal solutions for performance, everyday use and individuality.