Yamaha Moto-4 250 Top End Cylinder Kit

★★★★★ 4.3 105 reviews

US$43.75
Price when purchased online
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US$43.75
Price when purchased online
Free shipping Free 30-day returns

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Product details

Management number 241279945 Release Date 2026/07/17 List Price US$43.75 Model Number 241279945
Category

Revitalize Your Yamaha Moto-4 250 with a Complete Top End Cylinder Kit

Restore peak performance and extend the life of your Yamaha Moto-4 250, Bear Tracker, or Timberwolf with this comprehensive stock replacement top-end cylinder kit from 50 Caliber Racing. Engineered to meet OEM specifications, this kit provides everything needed to rebuild your engine's top end, ensuring countless more years of exhilarating rides and cherished memories.

OEM SpecManufacturing
Complete KitIncludes All Gaskets & Components
High QualityDurable Construction
Extended LifeFor Yamaha Models

What’s in the Box

✓ Cylinder
✓ Piston
✓ Piston Ring Kit
✓ Circlips (x2)
✓ Wrist Pin
✓ Head Gasket
✓ Base Gasket

Why Riders Upgrade

⚙️
Durable Construction
Engineered to meet OEM specifications for reliable performance.
🔧
Complete Rebuild Solution
Includes all necessary gaskets and components for a full top-end overhaul.
🚀
Restored Performance
Brings your engine back to life, ensuring smooth and powerful operation.
💰
Cost-Effective Upgrade
A high-quality, affordable alternative to OEM replacements.
In Stock & Ready To Ship

Processing: Packed with care before shipment

Tracking: Sent when shipped

Confirmation: Sent after checkout

Although rare, some delays may occur. We’ll keep you updated every step of the way.

Stock Cylinder vs. 50 Caliber Racing Top End Kit

STOCK CYLINDER
✗ Lower performance potential
✗ May require OEM specific sourcing
✗ Lacks a full component kit
✗ Can be more expensive for a complete solution
✗ May not include all necessary gaskets
⚡ 50 CALIBER RACING
✓ Restored OEM-spec performance
✓ Complete kit with all parts needed
✓ Includes all gaskets for a seamless install
✓ High-quality components for longevity
✓ Engineered to extend the life of your vehicle

Common Questions

Will this kit fit my specific Yamaha model?
This kit is designed for the Yamaha Moto-4 250 (89-91), Bear Tracker (99-04), and Timberwolf (92-00). It will not fit Raptor models.

Does this kit include all the necessary gaskets?
Yes, this kit includes a complete set of gaskets, including head and base gaskets, to ensure a proper seal.

Is this a big bore kit?
This kit is a stock replacement for the 250cc engine. It can also be used as a 250cc big bore kit for the Moto-4 and Tri-Moto 225 models.

What is the quality of the components?
All components are manufactured to OEM specifications, ensuring high quality and durability for extended engine life.

🛠️
Expert Support
🏆
Quality Guaranteed
📦
Tracked Shipping
🔒
Secure Checkout

What Riders Are Saying

This kit brought my old Moto-4 back to life! Installation was straightforward, and the performance increase was noticeable. Great value for the price.
— Mike R., California
Excellent quality parts. Everything fit perfectly, and my Timberwolf runs smoother than it has in years. Highly recommend 50 Caliber Racing.
— Sarah L., Texas

Ready to Reignite Your Ride?

Get your Yamaha Moto-4 250 running like new again.

Add this essential top-end cylinder kit to your cart today!

Vehicle Fitment

Yamaha YFM225 — 1983-1988
Yamaha YFM250 — 1989-2004
Yamaha YFM350 — 1992-2000
Yamaha YFM350 — 1999-2004

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Customer ratings & reviews

4.3 out of 5
★★★★★
105 ratings | 43 reviews
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