Hot Rods Stroker Crankshaft Kit CBK0134 — Yamaha YZ85 2002-2018

Hot Rods Stroker Crankshaft Kit CBK0134 — Yamaha YZ85 2002-2018

Product Description

The Hot Rods Stroker Crankshaft Kit is the industry-standard choice for riders performing a serious engine rebuild on their Yamaha YZ85. Engineered to meet or exceed OEM specifications, this stroker crankshaft assembly provides increased stroke for improved power delivery, giving your bike the torque and responsiveness needed to dominate on the track. By opting for a complete Hot Rods kit, you ensure a precise, balanced, and durable foundation for your engine.

Each crankshaft is factory-assembled and trued using high-strength 4140 steel, ensuring it is ready for immediate installation right out of the box. The kit includes a high-performance Hot Rods connecting rod, which is designed to handle the increased stress of high-RPM racing. Unlike many OEM units, these cranks are completely rebuildable using genuine Hot Rods connecting rods, providing a long-term, cost-effective solution for serious off-road racers.

Top Features: Hot Rods Stroker Crankshaft Kit

• Factory-assembled and trued to OEM specifications for easy installation
• Manufactured from high-strength 4140 steel for maximum durability
• Includes high-performance Hot Rods connecting rod
• Stroker design increases displacement to 88cc for enhanced power delivery
• Fully rebuildable design saves costs on future maintenance

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

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Sub-Model
2002-2018	Yamaha	YZ85

Frequently Asked Questions

Q: Does this kit come with the main bearings or seals?
A: This kit is a dedicated crankshaft and connecting rod assembly. While it is factory-trued and ready to drop in, we highly recommend purchasing a fresh set of main bearings and oil seals to ensure your bottom end is completely sealed and smooth for the life of the new crank.

Q: Is this a direct drop-in replacement for the stock crank?
A: Yes, this is designed to fit your YZ85 engine without case modifications. However, because it is a stroker crank, it will change your engine's compression and timing characteristics, so it is vital to ensure your top end and jetting are tuned accordingly.

Expert Pro-Tip: When installing a new crankshaft, never use a hammer to force the crank into the cases or bearings. Use a proper crank puller tool. Even a minor misalignment during installation can cause vibration, leading to premature bearing failure or crank runout. Patience during the bottom-end assembly is the difference between a motor that lasts one season and one that lasts three.

Recommended Pairings:
o Yamaha YZ85 Performance Parts & Upgrades
o Yamaha 2-Stroke Performance Parts
o Essential Motorcycle Shop Tools

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

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