Hot Rods Crankshaft Assembly 4427 — Yamaha YZ250F 2016-2018

Product Description

Get your Yamaha YZ250F back to peak performance with the Hot Rods 4427 Crankshaft Assembly. Designed to be a direct, reliable replacement for your engine, this assembly arrives fully pre-assembled and factory-trued to exact OEM specifications, significantly reducing your installation time and ensuring precision operation.

Crafted from premium 4140 steel, this crankshaft is engineered to match or exceed the durability of your bike's original equipment. Each unit includes proven Hot Rods connecting rods and high-quality top-end bearings, with precision-machined gears rated at DIN class 9 or higher. When the time comes for a future rebuild, the unit is fully serviceable with genuine Hot Rods components.

Top Features: Hot Rods Crankshaft Assembly

• Sold complete with proven Hot Rods connecting rods and top-end bearings
• Factory assembled and trued to meet or exceed OEM specifications
• Manufactured from durable 4140 steel for high-performance longevity
• Gears precision-machined to DIN class 9 quality level or higher
• Complete, pre-balanced, and ready for immediate installation

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

Fitment List

Frequently Asked Questions

Q: Does this kit include main bearings?
A: No, this assembly includes the connecting rod and top-end bearings. We highly recommend purchasing a new set of high-quality main bearings separately when installing a new crank.

Q: Is this crankshaft balanced to stock specifications?
A: Yes, it is factory-balanced and trued to meet or exceed the original Yamaha specs for your 250cc engine.

Expert Pro-Tip: Before installing your engine covers, use a quality assembly lube on all bearing surfaces. Ensure you check your flywheel nut torque during reassembly, as a loose flywheel can cause crankshaft damage that mimics internal engine failure.

Recommended Pairings:
o Yamaha YZ250F Performance Parts & Upgrades
o Yamaha 4-Stroke Performance Parts
o Assembly Lube & Premium Engine Oil

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 bikes. Every order ships fast from our Central Florida location.

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