Soarider Starter & Relay for Honda Rancher 420 TRX420 (2007–2019) — 12V PMDD, CCW, 9‑Tooth

This replacement starter kit includes a 12-volt PMDD starter motor with counterclockwise rotation and a matching starter relay, designed for Honda OE numbers 31200-HP5-601 and 31200-HR0-F01. It’s built as a like-for-like substitute for worn or failed starters on a range of ATVs and UTVs, and pairs interchangeably with common aftermarket part numbers so you can match it to your machine with confidence.

Will this starter fit my Honda Rancher, Foreman or Pioneer?

Compatibility depends on year and specific sub-model. The Soarider unit is compatible with most Rancher 420 models from 2007–2019, Foreman/ TRX500 models from specified years, and Pioneer 500 UTVs 2015–2021, but some TRX500 sub-models require alternate versions.

• Rancher 420 TRX420 series: 2007–2019 (listed sub-models included)
• Foreman 500 TRX500: 2012–2019 for many models—check notes for older series
• Pioneer 500 SXS500M: 2015–2021
• Not compatible with some TRX500FA/TRX500FPA 2012–2014 sub-models—verify before ordering

What are the technical specifications and interchange numbers?

The starter is a 12V Permanent Magnet Direct Drive (PMDD) motor with counterclockwise rotation and a 9-tooth pinion, supplied with a starter relay. It replaces the OEM part numbers and several aftermarket equivalents to simplify sourcing.

• Voltage: 12V; Rotation: CCW; Teeth: 9; Type: PMDD
• OEM matches: 31200-HP5-601, 31200-HR0-F01
• Interchange: Lester 18921, WAI 18921N, Mitsuba SM18, J & N 410-54135, Arrowhead SMU0418
• Package contents: 1 starter motor and 1 starter relay

How straightforward is installation and what should I check first?

Installation follows the same bolt and electrical connections as the original starter, so a mechanically inclined owner can swap it in with common hand tools. Before starting, confirm the starter’s rotation, tooth count and mounting pattern match your original unit to avoid wrong-fit issues.

• Verify OEM or model fitment against your VIN or factory service manual
• Confirm CCW rotation, 9 teeth, and 12V specification match the old starter
• Disconnect battery before removal, then reconnect after installation and test
• Torque mounting bolts to manufacturer recommendations for a secure fit

What practical benefits will I notice after installing this replacement?

Replacing a failing starter with this Soarider unit restores consistent cranking and reliable starts, reducing downtime in the field. The included relay ensures clean power delivery and prevents starter-solenoid mismatch for many Honda models.

• Smoother, faster engine cranking compared to degraded starters
• Reduced troubleshooting time with included relay and OE interchange numbers
• Durable PMDD design suited for frequent starts in utility and recreational use

Who is this for: This Soarider Starter & Relay kit is aimed at ATV and UTV owners, fleet managers, and mechanics who need a dependable replacement for worn or failed starters on Honda Rancher 420, Foreman 500 and Pioneer 500 machines. If you operate in rural, agricultural, or recreational environments and need a direct-fit, component-matching swap-out to get your vehicle back in service, this kit provides the essential motor and relay combination for the job.