Vertex WR101-179 Complete Engine Rebuild Kit 2005-2017 Honda CRF450X

Vertex WR101-179 Complete Engine Rebuild Kit — 2005-2017 Honda CRF450X

Product Description

Restore the legendary off-road performance of your trail machine with the Vertex WR101-179 Complete Engine Rebuild Kit. Engineered specifically for the iconic 2005-2017 Honda CRF450X platform, this comprehensive "engine-in-a-box" bundle eliminates the hassle, guesswork, and high costs of sourcing individual parts. Whether your endurance machine is blowing smoke, losing compression on the trail, or suffering from a high-hour, noisy bottom end, this professional-grade kit supplies everything required to complete a total top-to-bottom mechanical overhaul and get your bike back to maximum reliability.

Every component in this heavy-duty package is manufactured to meet or exceed strict OEM standards for long-term durability in extreme trail, desert, and endurance riding environments. The kit pairs a premium, standard compression Vertex piston kit with a factory-assembled and precision-trued crankshaft. Backed up by high-durability main bearings, transmission bearings, a counterbalancer bearing kit, and a full top-and-bottom gasket set with high-pressure oil seals, this kit protects your engine casing from premature wear. Save hours of assembly downtime and hundreds of dollars compared to buying individual OEM parts with this perfectly matched powertrain solution.

Top Features: Vertex Engine Rebuild Kit

• All-In-One Box Convenience: Simplifies your rebuild project by packing every major mechanical component needed for a total top and bottom-end overhaul into one convenient kit.
• Premium Vertex Piston Assembly: Includes a standard bore, standard compression piston precision-machined with case-hardened wrist pins, premium nitride-coated or chrome-plated rings, and matching circlips.
• Heavy-Duty Forged Crankshaft: Features a stock-stroke, factory-trued crankshaft designed to replicate or outperform original equipment reliability and balance.
• Complete Gasket & Seal Kit: Includes a full top and bottom-end engine gasket set alongside high-temperature, high-pressure oil seals and O-rings to ensure a leak-free seal.
• Comprehensive Bearing Support: Bundled with trusted main bearings and seals, primary/secondary transmission bearings, countershaft bushing/seal kit, a water pump repair kit, a counterbalancer bearing kit, and a premium cam chain.

Please review the application table below to verify exact engine and sub-model fitment compatibility for your off-road motorcycle before ordering.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Sub-Model
2005-2017	Honda	CRF450X (Off-Road / Trail)

Frequently Asked Questions

Q: What components are included in this kit?
A: This complete kit includes: a premium stock-stroke crankshaft, a standard compression piston kit (including standard size piston, rings, wrist pin, and circlips), a complete engine gasket kit covering both top and bottom cases, a full engine oil seal kit, heavy-duty main bearings and seals, a water pump rebuild kit (bearings and seals), a full transmission bearing kit (primary/secondary shafts and shift drum needle bearing), a countershaft bushing/seal kit, a high-durability cam chain, and a counterbalancer bearing kit.

Q: Is the piston included in this kit stock size or oversized?
A: The piston kit included in the WR101-179 kit is a standard bore size designed to match original stock specifications. If your engine cylinder wall has severe gouges or wear that requires professional boring or replating, you will need to source an oversized piston kit or replace the cylinder sleeve.

Expert Pro-Tip: When performing a full case-splitter rebuild on a high-performance 4-stroke engine like the CRF450X, cleanliness is your absolute best friend. Before assembly, wash the bare engine crankcase halves thoroughly in hot soapy water or a parts washer to remove any metal flakes from previous component failures. Forcefully dry them with compressed air, and liberally coat all your new transmission bearings, main bearings, and the crankshaft rod journal with high-quality assembly lube to prevent damaging friction during the crucial first startup.

Recommended Pairings:

• Shop Premium 4-Stroke Dirt Bike Engine Oils & Filters
• Shop Heavy-Duty Intakes & Exhaust Valve Kits
• Shop More Premium Vertex Engine Components

Local Pickup & Fast Shipping: Moto-House MX is the premier powersports source in Central Florida. Stop by our retail location at 1050 E. Highway 50, Clermont, FL 34711 (serving the Clermont and Montverde areas) for expert mechanical advice and local pickup, or order online for fast, reliable shipping straight to your garage workshop.

Have questions about fitment, component specifications, or engine rebuilding procedures? Contact the Moto-House MX technical team at sales@motohousemx.com or call us during business hours at (352) 241-7995.