Honda TRX 420 Rancher FA/AT Automatic Oil Change Tune Up Kit – Moose Offroad + NGK + Filter

OVERVIEW

This complete oil change and tune-up kit is engineered exclusively for 2009–2020 Honda TRX 420 Rancher automatic-shift models, covering AT, FA, and FPA trims. The package provides everything required for thorough routine maintenance, including 4 quarts of Moose Offroad 10W‑40 motor oil, a corresponding replacement oil filter, and an NGK BKR5E‑11 spark plug. Components are selected to ensure proper lubrication, improved filtration, and reliable cold starts while adhering to strict OEM specifications.

ENGINEERING & PERFORMANCE

Moose Offroad motor oil is formulated to maintain stable viscosity under load, ensuring consistent lubrication and minimizing friction within the crankcase and wet clutch assembly. The included filter pairs with this oil to provide effective contaminant capture throughout the service interval, supporting cleaner engine operation. Meanwhile, the NGK spark plug features a pure alumina silicate ceramic insulator that promotes superior heat transfer away from the electrode region. Combined triple seals and copper core construction further prevent gas leaks and enhance thermal dissipation for sustained performance.

KEY FEATURES

• Complete oil change and tune-up kit
• Moose Offroad 10W‑40 Motor Oil (4 quarts)
• Premium replacement oil filter
• NGK BKR5E‑11 Spark Plug
• Made in USA — meets JASO MA2 and API SL standards
• Wet-clutch compatible for automatic transmissions
• Anti-corrosion trivalent metal plating on spark plug terminal
• Triple seals and copper core for secure sealing
• Designed specifically for automatic models (excludes manual shaft drive)

TECHNICAL SPECIFICATIONS

• Brand: Moose Offroad, NGK
• Part Name: Oil Change and Tune-Up Kit
• Kit Type: Complete Oil Change and Tune-Up Kit
• Oil Type: 10W‑40 Motor Oil
• Oil Volume: 4 Quarts
• Oil Specifications: JASO MA2, API SL
• Filter: Included (Matching OEM Size)
• Spark Plug Model: NGK BKR5E‑11
• Supported Years: 2009–2020
• Compatible Trims: AT, FA, FPA

FITMENT

• Honda TRX420 AT Rancher (2009–2020)
• Honda TRX420 FA Rancher (2009–2020)
• Honda TRX420 FPA Rancher (2009–2020)

Note: Does NOT fit standard or manual shift Rancher 420 models due to differing filter requirements.

WHY RIDERS CHOOSE THIS

Riders choose this kit to execute a full-service refresh on their TRX 420 with confidence that every component matches the machine's unique requirements. Because it targets automatic-shift platforms exclusively, the oil selection guarantees smooth wet clutch operation without the slippage risks associated with friction modifiers found in car-grade oils. The addition of a performance-grade NGK plug alongside viscosity-stable oil helps restore compression and throttle response while actively managing heat buildup. This combination simplifies maintenance logistics and extends engine life by addressing filtration, ignition, and lubrication needs in a single purchase.