BEST Honda TRX 400EX 400X Top End Rebuild Kit Stock Cylinder Piston Camshaft SKF
4606M08500, C7825, 1051-3, 12100-KCY-670, 71016-4,4667M08900, 1043-2, C7826, 1051-3, 12100-KCY-670, 71016-4, 13111-KCY-670, 4606M08500, C7826, 71016-4, 13111-KCY-670, 12251-HN1-003, 12209-KL4-005, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, C7825, 808894, 4040, 4606M08700, C7826, H0402027S, 808829, M2001, 8604D200, 8604D400,OE Part Numbers 1 12100-HN1-A70, 12191-KCY-672 OE Part Numbers 2 13011-KCY-670, 13101-KCY-670 OE Part Numbers 3 13111-KCY-670, 90601-KA5-000 OE Part Numbers 4 98061-59616, 12251-HN1-003 OE Part Numbers 5 12391-KCY-671, 12100-KCY-670
Honda TRX 400EX/400X Stock Bore 85mm Performance Rebuild Kit w/ Hi-Performance Camshaft – Fits All Honda 400EX & XR400R Models
Give your Honda 400EX, 400X, or XR400R into a high-performance boost with our TRX 400EX/400X Stock Bore Top End Engine Rebuild Kit. This all-in-one top-end upgrade provides everything you need to unlock all the power, reliability, and performance. With quality components that won't break the bank, this kit is designed to fit all Honda 400EX, 400X, and XR400R models and years.
Key Features:
- Aftermarket 85mm Stock Bore Cylinder & 10:1 Compression Piston Kit for enhanced horsepower and torque.
- Complete Piston Assembly including rings, wristpin, and circlips for a perfect fit and optimal performance.
- Top End Gasket Kit featuring a MLS head gasket to ensure a leak-proof seal.
- High-Performance Camshaft to maximize your engine’s power output.
- SKF OEM-Grade Upgraded Cam Bearings for durability and smoother operation.
- Heavy-Duty BPRATV Timing Cam Chain – thicker and stronger than OEM/aftermarket chains for long-lasting reliability.
- New Spark Plug included to ensure a quick and efficient startup after the rebuild.
Whether you're upgrading for off-road dominance or seeking a reliable rebuild, this kit delivers outstanding performance and longevity. Boost your Honda’s power, throttle response, and durability!
✔ Fits All Honda 400EX, 400X, and XR400R Models – Any Year!
✔ Perfect for avid racers, trail riders, and those seeking a high-performance upgrade!
This kit allows you to rebuild your top end without breaking the bank, making it an excellent choice for budget-conscious performance enthusiasts. For those aiming for premium upgrades featuring forged pistons or Hot Cams camshafts, be sure to explore our premium kits.
BRAPPPPPPPPP!
Complete Your Build
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Professional Installation Required
Professional installation by a qualified technician is recommended for best results.
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Notice Regarding Photos: Product photos used in our listings are for example only to show item quality, components, and visual reference. You will receive the correct quantity, size, and fitment for the specific kit listed. Exact brands, finishes, packaging, or small components may vary when equivalent-quality parts are used. Please read the full product description for exact details before purchasing.
Bearing Notice: In some cases, you may receive sealed bearings. If your application requires an open bearing, the seals can be removed when appropriate for the application.
Emissions & Race Use Only: Some products may be exempt from emission standards and requirements under 40 C.F.R. § 1051.620 and/or applicable California law. Certain parts are sold only for use with EPA-certified, purpose-built, nonroad vehicles used solely for closed-course, nonroad competition/racing. Installation may void the vehicle manufacturer's warranty and/or may be illegal in some locations. Buyer is responsible for confirming legal use in their application and location.
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Specialty Warranties: Certain specialty items, such as Cub cylinders or titanium fasteners, may have separate warranty terms. Any warranty does not cover improper tuning, installation, maintenance, or misuse.
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