Quattrini C1 crankcase Vespa small frame RB

Crankshaft carter Quattrini C1 Vespa small frame RB.

The Italian manufacturer RB based in Spain is unique in the sector. It builds and develops from scratch any type of crankshaft for motorcycles. It has state-of-the-art machinery, and the connecting rods are without a doubt its strong point; they are forged and machined.

Round-type crankshaft, designed for engines with direct intake.

Specifications:

• Stroke: 51
• Connecting rod: 102mm
• Cone: 20
• Pin: 15mm
• Flywheel side thread: Ø12
• Clutch side thread: 12x1.5
• seals: 24x35x7
• Bearings: 25x52x15
• Web: 85mm plug&play

Attention! Balancing checks must be carried out before installing it in the engine, since manufacturers deny warranty coverage for any balancing fault detected after installation.