Hot Rods Bottom End Kit with OE Crankshaft (450cc) HR00124 - Yamaha YFZ450R / SE 2014-2021

Product Description

Revitalize the bottom end of your ATV with the Hot Rods HR00124 Bottom End Kit, engineered as a direct OE replacement for superior reliability and performance. Built for high-performance 4-stroke off-road machines, this comprehensive package restores factory compression and dependable operation on the trail or track.

Manufactured from robust 4140 steel, the factory-assembled crankshaft features durable connecting rods and is built to meet or surpass strict OEM specifications. Backed by precision engineering and complete internal components including main bearings and a full gasket set, it delivers unmatched durability and a seamless installation for your quad engine rebuild.

Top Features: Hot Rods Bottom End Kit

• Includes everything needed for a complete bottom-end installation and engine rebuild
• Equipped with Hot Rods main bearings, seals kit, and a complete engine gasket set
• Factory assembled and trued directly to strict OEM performance specifications
• Constructed from high-strength 4140 steel for ultimate longevity
• Engineered as a ready-for-installation direct OE replacement

Please review the detailed compatibility data below to ensure an exact fitment match for your ATV before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: What components are included in this bottom end kit?
A: This complete kit features a crankshaft, connecting rods, a complete engine gasket set, an oil seal kit, main bearings, and a seal kit.

Q: Is this kit ready for immediate installation?
A: Yes, it comes factory assembled and trued to OEM specifications, including all necessary bearings and gaskets for a comprehensive engine rebuild.

Expert Pro-Tip: When installing a new crankshaft, always ensure the engine crankcases are thoroughly cleaned and free of any debris or old gasket material. Check main bearing housing bores with a dial bore gauge to verify proper tolerance before dropping the new crank in, and always pre-lubricate bearings with fresh engine oil or assembly lube upon initial assembly to prevent dry startup wear.

Recommended Pairings:

• Yamaha YFZ450 Performance Parts & Upgrades
• Engine Rebuild Kits
• Clutch Kits

About Moto-House MX

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their machines. We pride ourselves on great customer service, and every item ships FAST - straight to your door.

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