Starter Motor for Honda CRF250X 2004–2017 | 31200-KSC-671

Product Overview

Restore dependable starting performance with this 12V electric starter motor, designed for compatible Honda CRF250X off-road motorcycles from 2004 through 2017.

Featuring a 9-tooth drive gear, counterclockwise rotation, and a listed no-load speed of at least 12,500 RPM, this starter motor helps provide smooth and consistent engine cranking when the original unit becomes weak, slow, intermittent, or unable to start the engine.

The durable metal housing and precision-manufactured internal components are designed to withstand repeated starting cycles, engine vibration, heat, dust, and demanding trail-riding conditions. Its direct-replacement configuration helps simplify installation when the OEM number, mounting-hole spacing, terminal position, and physical dimensions match the original starter.

Product Compatibility

Brand	Model	Model Code	Engine	Year Range
Honda	CRF250X	CRF250X	249cc	2004–2017
Honda	CRF250X A	Regional model code	249cc	Selected 2004–2017 model years
Honda	CRF250X AC	Regional model code	249cc	Selected 2004–2017 model years

Published replacement catalogs list this starter for Honda CRF250X models from 2004 through 2017. Honda parts fiches also identify 31200-KSC-671 as the starter-motor assembly on multiple CRF250X model years.

Model availability and suffix codes can vary by country and production year. Confirm the original part number and physical configuration before ordering.

OEM Cross-Reference Numbers

Honda

• 31200-KSC-671
• 31200KSC671

Aftermarket Cross References

• Arrowhead: SMU0372
• J & N Electrical: 410-54150
• J & N Electrical: 41054150
• Lester/WAI: 18851
• NICHE: 519-CSM2521O

These references are commonly grouped under the same 12V, 9-tooth, counterclockwise starter configuration for the CRF250X.

Your original starter does not need to display every number listed above. However, at least one compatible OEM or confirmed interchange number should match the original unit or the parts catalog for your motorcycle.

Specifications

Specification	Details
Product Type	Electric Starter Motor
Voltage	12V
Drive Gear	9 Teeth
Rotation	CCW / Counterclockwise
Listed No-Load Speed	≥12,500 RPM
Mounting-Hole Distance	38.4 mm / 1.51 in
Overall Width	62.4 mm / 2.46 in
Starter Type	Permanent Magnet Direct Drive / PMDD
Brush Type	Carbon
Fitment Type	Direct Replacement
Vehicle Type	Off-Road Motorcycle / Dirt Bike
Housing Material	Metal
Condition	New
Package Quantity	1 Starter Motor

Published interchange specifications also identify this starter family as a 12V, 9-tooth, CCW PMDD unit.

Rotation descriptions may vary depending on which end of the starter is viewed. Use the OEM number, gear configuration, mounting points, terminal position, dimensions, and product photos together when confirming fitment.

Key Features

• CRF250X-Specific Fitment: Designed for compatible 2004–2017 Honda CRF250X motorcycles using OEM 31200-KSC-671.
• 12V 9-Tooth Configuration: Features a 9-tooth drive gear and counterclockwise rotation for compatible starting systems.
• Reliable Starting Performance: Helps restore consistent engine cranking when the original starter becomes weak, slow, or intermittent.
• Durable Metal Construction: Wear-resistant components support dependable performance under heat, vibration, dust, and off-road riding conditions.
• Direct-Replacement Design: Matches the original-style installation when the OEM number and all physical specifications are correct.