Stator, Flywheel & Regulator Rectifier Kit for Yamaha YZF R1, FZ1 & FZ8 2006-2014
Stator, Flywheel & Regulator Rectifier Kit for Yamaha YZF R1, FZ1 & FZ8 2006-2014
SKU:RMS900-106862
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Improved Charging System Kit for Yamaha YZF R1, FZ1 and FZ8
Stator, flywheel, aluminium MOSFET regulator and gasket · 2006-2014 · Part RMS900-106862
This is a complete charging system kit for the Yamaha YZF R1, FZ1 and FZ8, combining a brand new aftermarket stator, a magneto flywheel rotor, a machined aluminium MOSFET voltage regulator and the stator crankcase cover gasket in one box. These models are well known for charging faults, and the three main components tend to take each other down: a flywheel that loses its magnets damages the stator, and a stator that is breaking down overloads the regulator. Replacing all three at once is the only way to be certain the fault is cured rather than moved along to the next weakest part.
Every part in the kit is a direct replacement for the original unit and is plug-and-play with no assembly required. The stator uses the highest grade of lamination materials and the highest grade of copper winding, resistant to 200 degrees Celsius. The heavy duty flywheel addresses the common failure on these Yamaha models by using a high temperature epoxy that is stronger than OEM together with high grade steel capping to stop the magnets detaching from the rotor. The red machined aluminium MOSFET regulator runs cooler than all OEM diode style regulators and includes overheat protection, and the kit is completed with the connector kit and the opposite connector for the main harness side.
Key Features
- Complete kit: stator, magneto flywheel rotor, MOSFET regulator and gasket
- Direct replacement for the original units, plug-and-play and easy to install
- Highest grade lamination materials and copper winding rated to 200 degrees Celsius
- Heavy duty flywheel using high temperature epoxy stronger than OEM
- High grade steel capping to prevent magnet detachment
- Aluminium MOSFET regulator runs cooler than OEM diode style regulators
- Overheat protection built into the regulator
- Connector kit and opposite connector for the main harness side included
Technical Specs
| Specification | Detail |
|---|---|
| Stator interior diameter | 18 mm |
| Stator exterior diameter | 68 mm |
| Stator thickness | 42 mm |
| Wire length, stator to grommet | 125 mm |
| Wire length, grommet to plug | 500 mm |
| Stator wires / plugs / pins | 3 wires, 1 plug, 3 pins |
| Stator resistance, white to white | 0.4 ohms +/- 20% |
| Regulator size | 103 mm wide x 103 mm long x 28 mm high |
| Regulator fixation holes, centre to centre | 80 mm |
| Regulator plugs / pins | 2 plugs, 5 pins |
| Minimum charging voltage | 14.5 V +/- 0.5 V |
| Maximum charging current | 50 A / 500 W |
| Open circuit voltage | 15 V |
| Operating temperature | -20 to 85 degrees |
| Flywheel exterior diameter | 80 mm |
| Flywheel interior diameter | 69 mm |
| Flywheel centre housing | 12 mm interior, 18 mm exterior |
| Flywheel thickness | 11 mm exterior, 6 mm interior |
| Flywheel shaft diameters | 26 mm, 20 mm, 18 mm, 15 mm |
Vehicle Fitment Guide
Years shown are the overall coverage span for this part. Please confirm against the OEM part number on your original unit before ordering.
| Make & Model | Years |
|---|---|
| Yamaha YZF R1 | 2006-2014 |
| Yamaha FZ1 | 2006-2014 |
| Yamaha FZ8 | 2006-2014 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number | Manufacturer / Brand |
|---|---|
| 5VY-81410-00-00 | Yamaha - stator |
| 2D1-81410-10-00 | Yamaha - stator |
| 2D1-81410-01-00 | Yamaha - stator |
| 2D1-81410-00-00 | Yamaha - stator |
| 1D7-81960-01-00 | Yamaha - regulator |
| 1D7-81960-00-00 | Yamaha - regulator |
| 5VY-81450-00-00 | Yamaha - flywheel |
| 2D1-15451-10-00 | Yamaha - gasket |
Frequently Asked Questions
Will this fit without modification?
Yes. Every item in the kit is a direct replacement for the original Yamaha part, plug-and-play with no assembly required. Check the OEM numbers on your original stator, regulator and flywheel against the cross reference table before ordering.
What is included?
A brand new aftermarket stator with its connector and rubber grommet, the magneto flywheel rotor, the red machined aluminium MOSFET voltage regulator, the crankcase cover gasket, the connector kit and the opposite connector for the main harness side.
How do I know the old charging system has failed?
The classic pattern on these models is a battery that goes flat over a few rides, headlights that dim at idle, and a charging voltage at the battery that stays near 12 V instead of rising towards 14 V once the engine is running. Measuring the stator between each white wire should give about 0.4 ohms; a reading well away from that, or continuity between a white wire and the engine cases, confirms a failed stator. A flywheel with loose or displaced magnets often gives a rough, uneven note from the left-hand side of the engine.
Why replace the flywheel as well as the stator?
On these Yamaha models the flywheel magnets can come away from the rotor, and the debris then destroys a newly fitted stator within a short time. This kit uses a heavy duty flywheel with a high temperature epoxy stronger than OEM and steel capping over the magnets, so the cause of the original failure is removed at the same time as the symptom.
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