Description
Product Overview
The MRELC 420 Chain 120-Link Set with 13T Front and 35 Tooth Rear Sprockets is engineered to deliver a robust, reliable drivetrain solution for a wide spectrum of small-displacement machines. Constructed from high-grade stainless steel, the chain offers superior corrosion resistance and heat tolerance, ensuring longevity even under the most demanding off‑road conditions. The front sprocket features a 13‑tooth configuration with a 17 mm mounting hole, while the rear sprocket provides a 35‑tooth profile, delivering an optimal balance of torque and top‑end speed. Each component is precision‑machined to exacting tolerances, guaranteeing smooth power transfer and minimal wear. The package includes a master link for effortless tensioning, allowing riders to fine‑tune the chain length without the need for specialized tools.
![[Product front view showing all components]](https://www.borviro.store/wp-content/uploads/2026/07/db385672a3f4460f99291548e5c3c25c.jpg)
Usage
This drivetrain kit is ideally suited for 50 cc to 170 cc engines found in popular models such as the CRF150, YZ80, SSR, Lifan, Coolster, and many others. Whether you are tackling rugged mountain trails, racing on a go‑kart circuit, or cruising on a mini bike around the neighborhood, the 420 chain’s high tensile strength and the sprockets’ durable construction provide consistent performance. The kit’s universal design accommodates a variety of frame geometries, making it a versatile upgrade for dirt bikes, ATVs, go‑karts, and mini bikes alike. Installation is straightforward: remove the existing chain and sprockets, align the new components according to the manufacturer’s specifications, and secure the master link. After a brief tension adjustment, the system is ready for immediate use, delivering smoother acceleration and reduced drivetrain noise.
Why Choose Us
Choosing MRELC means selecting a brand committed to quality, performance, and customer satisfaction. Our 420 chain set undergoes rigorous testing in real‑world environments to validate its durability and reliability. The stainless‑steel alloy is specifically formulated to resist rust and corrosion, extending the service life of both chain and sprockets. We stand behind our product with a comprehensive warranty and responsive after‑sales support, ensuring that any questions or concerns are addressed promptly. Additionally, our detailed installation guide and responsive technical team make the upgrade process as seamless as possible, even for riders with limited mechanical experience.
Key Features
- Heavy‑duty 420 chain with 120 links provides exceptional strength for demanding terrain.
- Stainless‑steel sprockets resist rust and heat, delivering long‑term durability.
- 13‑tooth front and 35‑tooth rear configuration optimizes torque and top speed.
- Easy‑install master link allows quick tension adjustments without special tools.
- Dedicated MRELC customer support ensures assistance throughout the product lifecycle.
FAQ
What engine sizes are compatible with this chain and sprocket set?
The set is designed for engines ranging from 50 cc up to 170 cc, covering a broad array of dirt bikes, ATVs, go‑karts, and mini bikes.
Do I need any special tools to install the master link?
No special tools are required. The master link can be installed and tensioned using standard chain pliers or a simple hand‑tightening method as described in the included guide.
How does the stainless‑steel construction benefit my drivetrain?
Stainless steel offers superior resistance to corrosion and heat, which means the chain and sprockets maintain their strength and performance longer, even in wet or dusty environments.
Is there a warranty on this product?
Yes, MRELC provides a one‑year limited warranty covering manufacturing defects, and our support team is available to help with any installation or performance questions.
Can this kit be used on a go‑kart?
Absolutely. The 420 chain’s strength and the sprocket sizes are well‑suited for go‑kart applications, delivering reliable power transfer and smooth operation.
In summary, the MRELC 420 Chain 120‑Link Set with 13T Front and 35 Tooth Rear Sprockets offers a comprehensive, high‑quality solution for riders seeking to enhance the performance and reliability of their small‑engine vehicles. Its durable materials, precise engineering, and user‑friendly installation make it an excellent choice for both seasoned enthusiasts and newcomers alike. By upgrading to this drivetrain kit, you can expect smoother acceleration, reduced maintenance intervals, and a longer‑lasting powertrain that stands up to the rigors of off‑road adventure and competitive racing.




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