Stage6 R/T High-End Crankshaft – 85mm Connecting Rod (Piaggio / Gilera / Vespa / Aprilia / Derbi 50cc)
The Stage6 R/T racing crankshaft with 85mm conrod is a high-end, competition-grade crankshaft designed for maximum reliability and performance in high-output 50cc Piaggio-based engines.
- High-end full-mass racing crankshaft with lightweight alloy inserts
- CNC-machined connecting rod for extreme strength and optimized flow
- Precisely balanced to reduce vibration and ensure smooth high-RPM operation
- 18mm crankpin (stronger than the 16mm OEM size) for improved durability
- Includes premium piston pin bearing (12×17×15mm) and 2× M12x1.25 crankshaft nuts
Compatibility
- Fits all 50cc Piaggio engines (LC and AC) used in Piaggio, Gilera, Vespa, Aprilia, Derbi scooters
- Designed for 85mm conrod cylinders such as the Stage6 R/T 70cc cylinder
Installation Notes
- For cylinders meant for 80mm OEM rods, use the Stage6 5mm cylinder spacer and longer studs
- Plug & Play installation—no engine case machining required
- Recommended: install with new crankshaft bearings
Technical Specs
- Tuning Level: High-End Racing
- Connecting Rod Length: 85mm (+5mm over stock)
- Stroke: 39mm (OEM)
- Crankpin Diameter: 18mm
- Piston Pin Bearing: 12×17×15mm
