Crankshaft Stage6 R/T AM6
Description
CRANKSHAFT STAGE6 R/T MINARELLI AM6
Crankshaft Stage6 R/T for 50cc bikes with AM6 engine with flow optimized design. Fits many 50cc motorbikes with Minarelli AM6 engine such as Rieju MRT, Beta RR 50, Yamaha DT50, Peugeot XP6, Sherco 50, Fantic 50 and many more.
High-end tuning for Minarelli AM6
Meticulously 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 Stage6 R/T crankshaft was developed as the perfect complement to the Stage6 R/T 70cc cylinder for AM6, but can of course also be used with other racing cylinders with original connecting rod length. The crankshaft is suitable for tuned to heavily tuned 50cc motorcycles with Minarelli AM6 engine.
Advantages of Stage6 R/T Racing crankshaft
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 crankshaft has 20 mm journals, so you need special crankshaft bearings. We recommend the Stage6 crankshaft bearings with oil seals for AM6 20 mm.
TECHNICAL DETAILS FOR STAGE6 R/T CRANKSHAFT MINARELLI AM6:
- High-end racing crankshaft
Stroke: Original (39 mm)
Connecting rod length: Original (85 mm)
Piston pin: 12 mm
- Journals: 20mm
Small end bearing: HQ 12x17x15 mm
- For Minarelli AM6
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 immediately to prevent the damage from getting worse.
Please note that whenever the crankshaft is changed and serviced, you'll have to install new crankshaft bearings.

Tuning Level: High End racing
We categorize our products into different performance levels Original, Sport, Racing and High End , so that our customers can choose the right parts for their setup. It is really important to combine parts that belong to the same tuning level, this is especially true for cylinders, crankshafts and exhausts.
High End Racing products are exclusively designed for racing and should only be handled by tuning pros with the appropriate technical know-how. High-end racing parts often require modifications or machining of certain elements to accommodate the often larger components (larger crank webs, larger intake, etc.). Whether you stick with 50cc or increase the displacement, high-end racing parts offer much higher performance than the original parts and are the most powerful tuning parts.
Note: To ensure the reliability of the engine, it is important that the parts are compatible and that you do regular maintenance on your two-wheeler.
Crankshaft Stage6 R/T AM6 | |
---|---|
Article no. | S6-7918801 |
EAN | 4051272023712 |
Weight | 2,50 kg |
Series | R/T |
Brand | Stage6 R/T |
Product type | Crankshaft |
Tuning level | High-end |
Piston pin | 12 mm |
Needle bearing | 12x17x15mm |
Stroke | Original |
Conrod length | Standard |