Vertex WR101-058 Complete Engine Rebuild Kit 2000-2024 Suzuki DR-Z 400 Kawasaki KLX 400

✨DOES NOT fit kickstart applications!

Restore Peak Power with the Vertex WR101-058 Complete Engine Rebuild Kit

When your high-mileage dual-sport or off-road machine starts losing compression or making unusual bottom-end noise, a partial fix is never the answer. Reliability on the trail or street depends on a total refresh of the internal rotating assembly to prevent catastrophic failure. At Moto-House MX, we recommend this comprehensive OEM Replacement system to take the guesswork out of ordering individual parts. This kit provides everything needed to transform a tired motor back to factory-fresh specifications, ensuring your next adventure isn't cut short by mechanical fatigue.

The Vertex WR101-058 kit is engineered for Racing Performance and long-term durability, featuring a standard compression 89.970mm piston and a precision-balanced crankshaft. Every component, from the main bearings to the specialized water pump rebuild kit, is manufactured to meet or exceed rigorous Heavy Duty standards. By replacing the entire rotating assembly, transmission bearings, and cam chain simultaneously, you eliminate weak points in the engine cases, resulting in a smoother-running 4-stroke with optimized thermal efficiency and power delivery.

Top Features: Vertex WR101-058 Complete Engine Rebuild Kit

• Comprehensive Solution: Includes crankshaft, Vertex piston kit, main bearings, and a complete engine gasket set with all oil seals.
• Transmission & Countershaft Support: Comes with full transmission bearings and a countershaft bushing/seal kit to refresh the entire gearbox.
• Standard Compression Piston: Features a precision-machined 89.970mm Vertex piston (22951B) for reliable, consistent 4-cycle power.
• Cooling System Refresh: Includes a dedicated water pump rebuild kit to ensure proper coolant flow and temperature management.
• Professional Grade Components: High-quality cam chain and counter balancer bearings included (where applicable) for a total internal overhaul.

Expert Pro-Tip

"During a full rebuild, always use a dedicated case-splitting tool to avoid marring the gasket surfaces, and ensure you pre-lube the new crankshaft bearings with assembly lube before the first start." — Moto-House MX Technician

Fitment List

Frequently Asked Questions

Q: Does this kit include the oil seals for the entire engine?
A: Yes, the kit includes a complete engine gasket kit that specifically features all necessary oil seals and the main bearing seals.

Q: Is the crankshaft in this kit already assembled?
A: Yes, the crankshaft comes fully assembled and ready for installation into your engine cases.

Q: Is the piston included standard size or overbore?
A: This kit includes a standard 89.970mm diameter piston, designed for use with a standard-size cylinder bore.

Recommended Pairings

• Maxima Racing Oils Assembly Lube
• Engine Ice Hi-Performance Coolant

Stop by our local Store Montverde, FL or lightning-fast shipping across the USA.

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The Best Motocross/UTV & ATV Shop in Central Florida.