DUZFOREI T8F 54T Rear Sprocket Kit with 116-Link Chain for 47cc–49cc Mini Moto — 5 Master Links, 55mm ID

DUZFOREI T8F 54-tooth rear sprocket kit pairs a 116-link T8F chain and five master links to replace or upgrade drive systems on 47cc–49cc 2-stroke mini moto, pocket bike, scooter, and pit quad applications.

This all-in-one drivetrain set includes a 54-tooth T8F rear sprocket, a pre-measured 116-link T8F chain (folded length 360mm / 14.17 inches), and five master links so you have the parts needed for a complete rear sprocket and chain swap on compatible Chinese 47cc–49cc small-engine bikes. The components are made to match T8F 25H sprocket standards, so confirm your bike uses T8F chain/sprocket geometry before purchase.

Will this fit my 47cc or 49cc pocket bike or dirt bike?

If your machine is built around T8F 25H sprocket specifications and uses a 47cc–49cc 2-stroke motor, this kit is designed to fit. Check the sprocket inner diameter and bolt hole spacing against your wheel hub and swingarm. It’s especially common on Chinese mini motos, pit bikes, and small ATVs.

• Compatible with 47cc–49cc 2-stroke engines
• Sprocket inner diameter (ID): 55mm (2.16 in)
• Minimum bolt-hole diameter: 6mm (0.24 in)
• Center-to-center mounting: 65mm (2.56 in)

How do I install the sprocket and chain?

Installation requires basic hand tools and a competent understanding of chain tension and alignment. Remove the wheel or existing sprocket, bolt the new 54T sprocket to the hub using proper torque, lay the T8F chain around the front and rear sprockets, and secure with a supplied master link. Adjust chain tension so there is some free play per your bike’s specifications to avoid premature wear.

• Chain folded length: 360mm (14.17 in) before joining
• Includes five T8F master links for secure joining
• Confirm sprocket bolt pattern and hole diameter before fitting
• Re-check alignment and tension after first ride

What performance or maintenance differences should I expect?

Switching to a 54-tooth rear sprocket will affect final drive ratio, typically increasing low-end torque and reducing top speed compared with a smaller tooth count, depending on front sprocket size. New chain and sprocket surfaces reduce slop and improve smoothness compared with worn components. Routine lubrication and periodic tension checks will extend service life.

• 54T count favors stronger acceleration and easier hill-climbing
• New chain lessens driveline lash and vibration
• Lubricate chain after installation and every few rides
• Inspect for wear, tight links, and proper master link seating

Are there compatibility warnings I should know?

The T8F chain type only works with T8F 25H sprockets; it will not seat correctly on different chain profiles. Measure the sprocket bore and mounting holes before buying, and replace both chain and sprocket together when possible to ensure even wear. Using mismatched parts can lead to poor engagement and accelerated wear.

• T8F chain must pair with T8F 25H sprockets
• Check ID = 55mm and at least 6mm bolt holes
• Replace chain and sprocket as a matched set for best life
• Not for larger-engine motorcycles without confirming fit

Who is this for: Riders, mechanics, and hobbyists who maintain or upgrade Chinese 47cc–49cc mini motos, pocket bikes, scooters, pit bikes, and small ATVs will find this DUZFOREI kit useful. It’s built for those who need a full replacement rear sprocket and chain set—complete with master links—for quick installation and reliable engagement, provided the bike uses T8F chain geometry.