Vertex WR101-036 Complete Engine Rebuild Kit – Kawasaki KX125 (2003–2004)

Vertex WR101-036 Complete Engine Rebuild Kit – Kawasaki KX125 (2003–2004) – Full Power Restoration Kit

The Vertex WR101-036 Complete Engine Rebuild Kit for Kawasaki KX125 (2003–2004) is the ultimate solution for riders who want to restore their bike’s performance and reliability. This convenient one-stop shop in a box includes nearly every component needed for a complete and professional engine rebuild. Designed with precision and built to last, each kit combines Vertex and Hot Rods components to deliver OEM-level fitment and race-proven durability. Whether you’re rebuilding after a hard season or bringing a two-stroke legend back to life, this comprehensive kit ensures smooth operation, strong compression, and dependable results every time.

Featuring a Vertex piston kit, Hot Rods heavy-duty crankshaft, and complete bearing, seal, and gasket kits, the WR101-036 provides everything required for a top-to-bottom engine overhaul. It also includes a water pump bearing and seal kit for efficient cooling and leak-free performance. Built to handle the rigors of motocross and off-road riding, this all-in-one rebuild kit delivers premium quality, precise fitment, and long-term reliability. With Vertex performance engineering, you can rebuild your KX125 with confidence and experience that crisp, powerful two-stroke feel you love.

🔥 Rebuild it right—ignite your KX125’s full potential and feel that factory-fresh snap every time you twist the throttle!

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✅ Top Features

• Convenient all-in-one rebuild kit – includes nearly every component needed for a complete and professional engine overhaul
• Vertex piston kit – standard compression piston, rings, pin, and clips deliver reliable sealing and consistent power
• Hot Rods heavy-duty crankshaft – stock stroke with wrist pin bearing provides strength, smooth operation, and long-lasting durability
• Hot Rods main bearing and seal kit – ensures proper lubrication, reduced friction, and improved engine longevity
• Hot Rods transmission bearing kit – includes all transmission bearings, output shaft collar, and sprocket lock washer for smooth shifting
• Hot Rods counter balancer bearing kit – reduces vibration for balanced, stable engine performance
• Hot Rods water pump bearing and seal kit – maintains optimal cooling efficiency and prevents leaks
• Vertex complete gasket and O-ring kit – covers both top and bottom ends for a perfect, leak-free seal every time

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Fitment

• Kawasaki KX125 (2003)
• Kawasaki KX125 (2004)

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❓ Frequently Asked Questions

Q: Does this rebuild kit include everything I need for my KX125 engine?
A: Yes! It contains nearly all major internal components—piston, crankshaft, bearings, gaskets, and seals—for a complete professional rebuild.

Q: Is this kit suitable for modified or bored cylinders?
A: Absolutely. The Vertex WR101-036 kit is compatible with over-size pistons and cylinder re-plating, making it perfect for both stock and performance builds.

Q: Why choose Vertex over other rebuild kits?
A: Vertex kits combine top-tier components from Vertex, Hot Rods, and Hot Cams, delivering race-proven reliability and precision fitment trusted by top mechanics and riders worldwide.

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🚀  Revive your ride. Feel the power. Own the podium.
Built with Vertex precision and Hot Rods performance, your KX125 will roar back to life, ready to dominate every lap.

Moto-House MX – Choice of Champions – located in Clermont/Montverde, FL, the best motocross shop in Central Florida.