250NK CF250-A / 250SRR25 Crankshaft Connecting Rod Assembly

Keep your 250cc engine running at peak performance with this precision-engineered Crankshaft Connecting Rod Assembly, designed as a direct-fit replacement for CF250-A and 250SRR25 engines (250NK platform). Whether you're restoring a quad, ATV, scooter, or go-kart powered by a CF250-series powerplant, this assembly provides the structural backbone your engine needs for smooth, reliable operation.

Made in Mainland China.

Key Features

Direct OEM-Style Fit – Engineered specifically for CF250-A and 250SRR25 crankcase configurations; installs with no modification required.
Precision-Machined Components – Crankshaft journals and connecting rod big-end are machined to tight tolerances for consistent clearance and smooth rotation.
Durable Construction – High-grade steel construction withstands the heat and stress of continuous engine operation.
Complete Assembly – Includes crankshaft and connecting rod as a matched set, saving you sourcing time and ensuring compatibility between components.
Broad Application – Compatible with 250NK, CF250-A, and 250SRR25 engine platforms found in ATVs, go-karts, scooters, and utility vehicles.

Specifications

Compatible Engine	CF250-A / 250SRR25 (250NK)
Assembly Includes	Crankshaft + Connecting Rod
Material	High-Grade Steel
Origin	Mainland China

Why Replace Your Crankshaft Assembly?

The crankshaft and connecting rod are central to converting combustion energy into rotational power. Worn or damaged components can lead to excessive vibration, reduced engine efficiency, and eventually engine failure. Replacing the assembly with a properly matched unit restores proper balance and power delivery to your machine.

For guidance on engine maintenance best practices and safe mechanical work, refer to OSHA's Mechanical Power Transmission Safety Guidelines.

Related Products

Learn more: Crankshaft

Frequently Asked Questions

Q: Which engine models is this crankshaft connecting rod assembly compatible with?

A: This assembly is designed for CF250-A and 250SRR25 engines on the 250NK platform. It is commonly used in 250cc ATVs, go-karts, scooters, and utility vehicles equipped with these engine codes. Always verify your engine code before ordering.

Q: Does this include both the crankshaft and connecting rod?

A: Yes. This is a complete matched assembly that includes both the crankshaft and the connecting rod, ensuring proper fitment and balance between the two components right out of the box.

Q: Is professional installation recommended for a crankshaft connecting rod assembly?

A: Yes. Crankshaft installation requires engine disassembly, torque specifications, and precise alignment. We strongly recommend having this part installed by a qualified mechanic or powersports technician to ensure safety and optimal engine performance.

Q: What is the country of origin for this product?

A: This crankshaft connecting rod assembly is made in Mainland China.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.