53 Tooth Rear Chain Sprocket HY53 76mm for 420 Chain 50-250CC ATV

Description

Product Overview

The HY53 53 tooth rear chain sprocket is a precision‑engineered component designed to meet the demanding requirements of off‑road powertrain systems. Constructed from high‑grade hardened steel, the sprocket offers exceptional resistance to wear, corrosion, and the high‑impact forces typical of ATV, motorcycle, and quad bike applications. Its 76 mm centre hole (ID 76mm) and 3.62 in (92 mm) mounting screw hole provide a secure fit for a wide range of 420 chain configurations, ensuring consistent engagement and optimal power transfer across the entire RPM range.

Key specifications include a 53‑tooth profile, a robust 2.99 in (76 mm) inside diameter, and a compact package that weighs just 1.87 lb, making it lightweight yet durable. The sprocket’s design incorporates a reinforced tooth geometry that minimizes chain stretch and reduces the likelihood of chain skipping, which translates to smoother acceleration and more reliable performance in both recreational and competitive settings.

Usage

Designed for engines ranging from 50 cc to 250 cc, this sprocket is ideal for a variety of power sports vehicles, including dirt bikes, ATVs, and quad bikes. Whether you are tackling rugged trails, navigating sand dunes, or competing in motocross events, the HY53 sprocket delivers the torque handling and durability needed to maintain peak performance. Its compatibility with 420‑type chains makes it a versatile upgrade for both stock and modified setups, allowing riders to fine‑tune gear ratios for improved acceleration or top‑speed characteristics.

Installation is straightforward: remove the existing sprocket, align the new HY53 unit using the 76 mm centre hole, and secure it with the 0.33 in (8.5 mm) mounting screw. The precise machining ensures minimal run‑out, reducing vibration and extending the life of both the chain and the drivetrain. For best results, pair the sprocket with a high‑quality chain and regularly inspect tension to maintain optimal performance.

Why Choose Us

At HY53, we combine decades of engineering expertise with rigorous quality control processes to produce components that exceed industry standards. Each sprocket undergoes a multi‑stage heat‑treatment cycle, followed by dimensional inspection using laser‑guided measurement systems. This meticulous approach guarantees that every unit meets exacting tolerances, delivering consistent tooth spacing and load distribution for reliable operation under extreme conditions.

Our commitment to customer satisfaction extends beyond the product itself. We offer a comprehensive warranty that covers manufacturing defects, and our dedicated support team is available to assist with fitment questions, installation guidance, and after‑sales service. When you choose the HY53 53 tooth rear chain sprocket, you are investing in a component backed by technical expertise, proven performance, and a reputation for durability that riders worldwide trust.

Key Features

• High‑grade hardened steel construction for superior wear resistance and long service life.
• 53‑tooth design optimized for smooth power transfer and reduced chain wear.
• Universal 420 chain compatibility fits engines from 50 cc to 250 cc.
• Precise 76 mm centre hole and 3.62 in mounting screw hole for easy, secure installation.
• Responsive customer support and warranty coverage for peace of mind.

FAQ

What chain size does this sprocket fit?

The HY53 sprocket is designed for standard 420‑type chains, which are the most common size used on ATVs, motorcycles, and quad bikes in the 50 cc to 250 cc range. This ensures broad compatibility across many vehicle models and makes it a versatile upgrade option.

Can I use this sprocket on a 250 cc motorcycle?

Yes. The sprocket’s 53‑tooth profile and robust steel construction are engineered to handle the torque output of engines up to 250 cc. It provides reliable engagement and helps maintain consistent performance even under high‑load conditions typical of larger displacement motorcycles.

How do I install the sprocket correctly?

Begin by removing the existing sprocket and cleaning the mounting surface. Align the new HY53 sprocket using the 76 mm centre hole, then secure it with the 0.33 in (8.5 mm) mounting screw. Tighten the screw to the manufacturer’s torque specification, check chain tension, and test the drivetrain for smooth operation before riding.

What warranty does HY53 provide?

HY53 offers a limited warranty that covers any manufacturing defects for a period of one year from the date of purchase. This warranty does not cover damage caused by improper installation, misuse, or normal wear and tear. Our support team is ready to assist with any warranty claims or technical questions.

Is this sprocket suitable for racing applications?

While the HY53 sprocket is built for durability and reliable performance in demanding off‑road conditions, it also meets the precision requirements of many racing environments. Its hardened steel teeth and accurate tooth spacing provide the consistency needed for competitive riding, though racers may also consider additional performance‑oriented components such as lightweight chains or specialized gear ratios.