Starter Relay Solenoid for Kawasaki Ninja 300 400 650 & Yamaha YFM 250 350 400 660 1993-2026
Starter Relay Solenoid for Kawasaki Ninja 300 400 650 & Yamaha YFM 250 350 400 660 1993-2026
SKU:RM09007
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Starter Relay Solenoid for Kawasaki Ninja and Yamaha YFM
Kawasaki Ninja 300, 400 and 650 - Yamaha YFM 250, 350, 400 and 660 - 1993-2026 - RMSTATOR part RM09007
The starter relay solenoid is the heavy duty switch that sits between the battery and the starter motor. The start button carries only a small current to the solenoid coil; the solenoid then closes a set of high current contacts that feed the starter motor the full battery load. Rated here at 150A for 30 seconds, it does the work that the handlebar switch and its thin wiring could never handle directly.
When a solenoid fails the symptoms are distinctive. A single loud click with no crank means the coil is pulling in but the internal contacts are pitted or welded and are no longer passing current. A rapid chattering usually points to a marginal supply or a coil that cannot hold in. Complete silence at the button, with a healthy battery and good earths, points to an open solenoid coil. Many of these relays also carry the main fuse holder, so a corroded or overheated unit can take the whole electrical system down with it. This is a brand new starter relay solenoid switch from RMSTATOR, built to a quality that exceeds the original equipment, and every unit is tested before it is shipped.
Key Features
- Brand new starter relay solenoid switch, not a refurbished unit
- Quality that exceeds the original equipment part
- Rated at 150A for 30 seconds for reliable cranking
- Four terminals and a single plug, matching the factory connections
- Replaces a long list of Yamaha 81940 series and Kawasaki 27010 numbers
- Every unit is tested before it is shipped
- RMSTATOR part number RM09007
Technical Specs
| Specification | Detail |
|---|---|
| Part number | RM09007 |
| Component type | Starter relay solenoid switch |
| Height | 44 mm |
| Length | 40 mm |
| Width | 50 mm |
| Number of terminals | 4 |
| Number of plugs | 1 |
| Rating | 150A 30S |
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 |
|---|---|
| Kawasaki Ninja 300 | 1993-2026 |
| Kawasaki Ninja 400 | 1993-2026 |
| Kawasaki Ninja 650 | 1993-2026 |
| Yamaha YFM 250 | 1993-2026 |
| Yamaha YFM 350 | 1993-2026 |
| Yamaha YFM 400 | 1993-2026 |
| Yamaha YFM 660 | 1993-2026 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number | Manufacturer / Brand |
|---|---|
| 4SV-81940-00-00 | Yamaha |
| 4SV-81940-10-00 | Yamaha |
| 4SV-81940-11-00 | Yamaha |
| 4SV-81940-12-00 | Yamaha |
| 4XE-81940-00-00 | Yamaha |
| 4XE-81940-10-00 | Yamaha |
| 4XE-81940-11-00 | Yamaha |
| 4XE-81940-12-00 | Yamaha |
| 4XE-81410-11-00 | Yamaha |
| 4BH-81940-00-00 | Yamaha |
| 4BH-81940-01-00 | Yamaha |
| 4BH-81940-02-00 | Yamaha |
| 5YT-81940-00-00 | Yamaha |
| 5EK-81940-00-00 | Yamaha |
| 5EK-81940-01-00 | Yamaha |
| 5EK-81940-02-00 | Yamaha |
| 1D0-81940-01-00 | Yamaha |
| 1D0-81940-02-00 | Yamaha |
| 3EL-81940-00-00 | Yamaha |
| 3EL-81940-01-00 | Yamaha |
| 3EL-81940-02-00 | Yamaha |
| 27010-0099 | Kawasaki |
Frequently Asked Questions
Does it fit without modification?
Yes. The unit measures 40 mm long, 50 mm wide and 44 mm high with four terminals and a single plug, matching the original layout, so it drops into the factory position and the existing harness connects straight to it. No cutting or splicing is required.
What is supplied?
You receive the starter relay solenoid switch itself. Reuse the battery and starter cables from your original unit, and if your machine carries its main fuse in the relay body, transfer that fuse across as well.
How do I know my old relay has failed?
One sharp click with no crank is the classic sign of burnt internal contacts. Chattering suggests the coil cannot hold the contacts closed. No sound at all from the relay, with a good battery and clean earths, usually means the coil is open circuit. Before condemning it, check that the battery is fully charged and the terminals and earth strap are clean, since a flat battery mimics all three.
What does the 150A 30S rating mean?
It means the contacts are rated to carry 150 amps for a 30 second duty period, which is the peak load a starter motor draws while cranking. Cranking in short bursts and letting the starter rest between attempts keeps both the relay and the starter motor within that duty rating.
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