Description
Product Overview
The T8F 54T rear sprocket kit is engineered to meet the demanding needs of small displacement two‑stroke engines commonly found in children’s mini motorcycles, pocket‑size ATVs, and pit bikes. Crafted from high‑grade steel, the sprocket features a 55 mm inner diameter, a 140 mm outer diameter, and a 65 mm center‑to‑center spacing that aligns precisely with the T8F 25H sprocket standard. The included 116‑link chain, measuring 360 mm when folded, is tempered for strength and flexibility, ensuring consistent tension and minimal stretch over prolonged use. Five stainless‑steel master links simplify installation and future maintenance, allowing riders to replace or adjust the chain without specialized tools. All components are packaged in a compact, protective box measuring 9.02 x 5.75 x 1.97 inches, weighing just 1.65 pounds, making it easy to ship and store. This kit is designed for 47cc and 49cc 2‑stroke engines, delivering a balanced power transfer that enhances acceleration while preserving the engine’s reliability.
![[Product front view showing all components]](https://www.agvex.store/wp-content/uploads/2026/07/40abd86714d54995835e4c7c53a6a598.jpg)
Usage
Designed for off‑road enthusiasts, the T8F kit excels in environments where traction and durability are paramount. Whether navigating a dirt track, tackling a pit lane, or exploring rugged trails, the sprocket and chain work together to provide smooth, responsive power delivery. The kit is ideal for weekend riders, youth training programs, and hobbyist mechanics who need a dependable drivetrain upgrade without the complexity of custom machining. Installation typically takes under an hour, and the master links allow quick chain tension adjustments after a ride, ensuring optimal performance day after day. The kit’s compatibility with both 47cc and 49cc engines means it can be used across a range of models, from entry‑level pocket bikes to more aggressive pit‑style quads, making it a versatile solution for families and small racing teams.
Why Choose Us
DUZFOREI stands behind every component with a commitment to quality and customer satisfaction. Our manufacturing process includes precision CNC machining, heat treatment, and rigorous quality control checks to guarantee that each sprocket meets exacting standards for tooth geometry and surface finish. The chain undergoes a proprietary tempering process that balances hardness with flexibility, reducing the risk of breakage under high torque loads. In addition, we provide comprehensive after‑sales support, including detailed installation guides, video tutorials, and a responsive technical team ready to assist with fitment questions or warranty claims. Our products are backed by a 12‑month limited warranty, reflecting confidence in the durability and performance of the kit. When you choose DUZFOREI, you receive not only a high‑quality component but also a partnership that helps you keep your bike running at its best.
Key Features
- Precision‑machined 54‑tooth sprocket ensures perfect tooth engagement for smooth power transfer.
- Durable 116‑link steel chain offers high tensile strength and resistance to stretch.
- Five stainless‑steel master links provide quick, tool‑free chain adjustments and replacements.
- Compact, lightweight packaging makes storage and installation hassle‑free.
- Dedicated customer support and a 12‑month warranty give peace of mind for every purchase.
FAQ
What engines are compatible with this sprocket kit?
The kit is designed for 47cc and 49cc two‑stroke engines that use the T8F 25H sprocket standard, commonly found on mini motorcycles, pocket bikes, and small ATVs.
Can I replace the chain without special tools?
Yes. The included master links allow you to open and close the chain quickly using only a simple pin tool, making maintenance straightforward for beginners.
How do I ensure proper chain tension after installation?
After fitting the chain, adjust the tension by loosening the rear axle bolts, moving the wheel forward or backward to achieve a 1/2‑inch vertical play, then retighten the bolts. The master links make fine‑tuning easy.
Is the kit covered by a warranty?
All DUZFOREI products come with a 12‑month limited warranty covering manufacturing defects. Contact our support team with your order details for assistance.
What is the recommended break‑in procedure?
Run the bike at moderate speed for the first 10‑15 minutes, avoiding full throttle. This allows the chain and sprocket teeth to seat properly, ensuring optimal performance and longevity.







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