Video Description Stage6 R/T high-end crankshaft with 85mm connecting rodStage6 R/T crankshaft for 50cc scooters with Minarelli horizontal engine with flow-optimized design. Fits many 50cc scooter models such as Yamaha Aerox / Jog, Malaguti F12 / F15, Aprilia SR50, and many more.Stage6 R/T tuning crankshaftMeticulously balanced high-end racing shaft with light alloy counterweight inserts that can be used with all cylinders with original stroke / original connecting rod length.The tuning crankshaft features precision manufacturing and adherence to exacting tolerances. The forged, CNC-machined connecting rod is extremely resistant and ensures maximum strength when used in racing engines, at the same time its design optimizes flow dynamics for enhanced performance.The very precise balancing via lightweight metal inserts mitigates strong vibrations and ensures smooth running. The top-of-the-line crankshaft comes with a top quality small end bearing.The crankpin measures 18mm instead of 16mm to increase durability.Fitting the Stage6 R/T crankshaft AeroxThe Stage6 R/T crankshaft was developed as the perfect complement to the Stage6 R/T 70cc cylinder for Minarelli horizontal, but can of course also be used with other racing cylinders with 85mm connecting rod length.You can also use a cylinder kit with 80mm original connecting rods, in which case a 5mm cylinder spacer must be used.Plug & Play installation - the Stage6 R/T shaft can be installed without further modifications, without the need for complicated crankcase machining. We recommend using a set of new crankshaft bearings.TECHNICAL DETAILS FOR STAGE6 R/T crankshaft MINARELLI scooter:High end racing crankshaftStroke: Original (39 mm)Connecting rod length: 85 mm (+5 mm compared to original)Crankpin: 18 mmPiston pin: 12 mmNeedle cage: 12x17x15 mmSupplied with 2 crankshaft nuts M10x1.25For Minarelli horizontal engine Questions about the product

• Brand: Stage6 R/T
• SKU: S6-7916601
• Availability: In stock

Notes and Safety How to change a crankshaft?The crankshaft is one of the main components of the engine and is responsible for the smooth operation of motorcycle, scooter and moped, whether with two-stroke or four-stroke engine. The longevity of the engine depends not only on the proper condition of the crankshaft, but also on the fact that it is properly mounted.For a correct installation of the crankshaft, we recommend our tutorial: Crankshaft disassembly and assembly.How can I tell if my crankshaft is Damaged?A broken crankshaft causes metallic noises, unusual vibrations, leaking oil seals and drastically reduces the performance of the two-wheeler. In any case, the vehicle must be stopped