This is a brand new starter relay solenoid switch for the CFMoto UFORCE and ZFORCE 500-1000 range and for the Suzuki LT 160 and LT 250 Quadrunner. The solenoid is the heavy-duty switch that sits between the battery and the starter motor: pressing the start button sends a small current to the solenoid coil, which closes a pair of high-current contacts and passes the full battery load to the starter. It does the hard work so the handlebar switch does not have to, and it is one of the most common electrical failure points on any machine of this type.
This unit is built as a direct replacement for the original. It is a two-terminal design with no wire tails and no plug, measuring 50 mm wide by 30 mm long by 38 mm high, with 60 mm between the fixation holes - the same footprint as the factory part, so it bolts into the standard bracket and takes the existing battery and starter cables straight onto its studs. The quality exceeds the OEM equipment, and all products shipped are tested before dispatch. It cross-references Suzuki numbers 31800-30B00, 31800-49100 and 31800-33400 as well as CFMoto numbers 5270-150500 and 7020-150310.
Key Features
- Brand new starter relay solenoid switch
- Direct replacement for the original unit
- Two-stud design - no plug, no wire tails to route
- 60 mm fixation hole spacing matches the factory bracket
- Quality exceeds the OEM equipment
- All products shipped are tested
- Covers both CFMoto and Suzuki applications
Technical Specs
| Specification |
Detail |
| Part Number |
RMS090-103945 |
| Width |
50 mm |
| Length |
30 mm |
| Height |
38 mm |
| Distance Between Fixation Holes |
60 mm |
| Number of Terminals |
2 |
| Number of Wires |
0 |
| Number of Plugs |
0 |
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 |
| CFMoto UFORCE 500-1000 |
1982-2024 |
| CFMoto ZFORCE 500-1000 |
1982-2024 |
| Suzuki LT 160 Quadrunner |
1982-2024 |
| Suzuki LT 250 Quadrunner |
1982-2024 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 31800-30B00 |
Suzuki |
| 31800-49100 |
Suzuki |
| 31800-33400 |
Suzuki |
| 5270-150500 |
CFMoto |
| 7020-150310 |
CFMoto |
Frequently Asked Questions
Will this fit without modification?
Yes. It is a direct replacement on the listed machines. The 50 x 30 x 38 mm body and the 60 mm fixation hole spacing match the original, so it mounts in the factory bracket, and the two studs take your existing battery and starter cables. No cutting, drilling or rewiring is needed.
What is included?
You receive the starter relay solenoid switch itself. This is a two-terminal unit with no wires and no plug, so there is nothing else to route or connect - the existing cables and mounting hardware from your machine are reused.
How do I know the old solenoid has failed?
The tell-tale sign is a single loud click from the solenoid when you press the start button, with the starter motor not turning at all. Sometimes there is no click and no response, or the starter spins only intermittently and needs several attempts. Before replacing it, rule out a flat or tired battery and clean the cable ends at both studs, because a poor connection at the solenoid gives exactly the same symptoms.
Does one solenoid really cover both CFMoto and Suzuki?
It does. CFMoto and Suzuki both use a two-stud solenoid on this pattern, which is why the cross reference table carries part numbers from both makes. The safest check is to read the number stamped on the unit currently fitted to your machine and match it against the table above before ordering.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
