This is a brand new ignition stick coil, supplied as a direct replacement for the original unit fitted to the Kawasaki Ninja 400 EX400 and Z 400 ER400. The stick coil sits directly over the spark plug and combines the coil and the plug cap in one assembly, so it drops straight into the plug well and connects to the machine's existing two-terminal plug. The quality exceeds the OEM equipment, and one cap coil is included.
The coil measures 126 mm long with a 9 mm internal tube diameter and a 42 mm seal, and it uses a single plug with two terminals. Primary resistance is 1.7 ohms and secondary resistance is 7.9k ohms - useful figures to compare against your existing coil when diagnosing a misfire. It replaces Kawasaki part number 21171-0751. Every unit is tested before it is shipped.
Key Features
- Brand new ignition stick coil, direct replacement for the original unit
- Quality exceeds the OEM equipment
- One cap coil included
- Combined coil and plug cap in a single stick assembly
- Single plug with two terminals
- Primary resistance 1.7 ohms, secondary resistance 7.9k ohms
- Every unit is tested before dispatch
Technical Specs
| Specification |
Detail |
| Part Number |
RMS260-107954 |
| Internal Tube Diameter |
9 mm |
| Length |
126 mm |
| Seal |
42 mm |
| Number of Plugs |
1 |
| Number of Terminals |
2 |
| Primary Resistance |
1.7 ohms |
| Secondary Resistance |
7.9k ohms |
Vehicle Fitment Guide
| Make & Model |
Years |
| Kawasaki Ninja 400 EX400 |
2018-2023 |
| Kawasaki Z 400 ER400 |
2019-2023 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 21171-0751 |
Kawasaki |
Frequently Asked Questions
Is this a direct fit, or does it need modification?
It is a direct replacement for the original unit. The stick coil drops into the plug well and connects to the existing two-terminal plug, so no modification is required.
What is included?
One cap coil is included.
How do I know my old stick coil has failed?
A failing stick coil usually shows as a misfire on one cylinder, a rough or lumpy idle, hesitation and loss of power under load, or hard starting that is worse when the engine is hot or the weather is damp. Measuring the coil is the reliable check: compare the primary and secondary resistance of your existing unit against the 1.7 ohms and 7.9k ohms figures listed above. A reading that is open circuit or far outside those values points to a failed coil.
Does the Ninja 400 need one coil or two?
This listing is for one stick coil. The Ninja 400 and Z 400 are parallel twins, so each cylinder has its own stick coil - order two if you intend to replace both at once.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
