TRX400EX / 400X Oil Change Kit – K&N Filter + Motorex 10W-40 (1999-2014)
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Honda TRX400EX / TRX400X Oil Change Kit – K&N Filter + Motorex 10W-40
The best of the best for your 400EX.
Trusted by our techs as the highest-quality oil change kit for the TRX400EX and 400X, this package delivers premium performance and protection with no compromises.
With a filter change, the 400EX engine takes approximately 1.95 quarts of oil. We recommend filling the oil tank with about 1 4/5 quarts, running the engine briefly at idle, then topping off to the full mark after shutdown and inspection.
📦 What's Included:
- K&N Performance Oil Filter KN-113
- Motorex Synthetic 4T Engine Oil 10W-40 – 2 Liters (2.1 US Quarts)
⭐ Key Features:
- High-Flow K&N Filter for increased oil flow and superior filtration
- Motorex Full Synthetic 10W-40 oil for max engine protection and performance
- Perfect fill amount for a complete oil + filter change
- Formulated for aggressive off-road and recreational use
✅ Fitment:
- 1999–2009 Honda TRX400EX
- 2009–2014 Honda TRX400X
🛠️ Specifications:
- Oil Type: Full Synthetic
- Viscosity: 10W-40
- Oil Capacity: 1.95 qt (with filter)
- Filter Model: K&N KN-113
- Product Use: Engine
- Riding Style: ATV / Off-Road
📌 Note:
After oil change, always verify oil level with dipstick after warm-up. Do not overfill. Professional installation recommended.
📦 Shipping Information
In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.
