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HARFINGTON 8mm Chain Roller Pulley Tensioner Black

$9.19 on Amazon.com (as of June 29, 2026, 7:15 PM EST) View details ↗

HARFINGTON Chain Roller Pulley Tensioner is a high-quality, durable replacement part designed for various chain-driven equipment. Made from robust nylon with a black finish, this concave-type guide wheel features an 8mm inner diameter and is equipped with double steel bearings for smooth, quiet operation. The 30mm outer mid diameter and 33mm end diameter, paired with a 28mm length, make it versatile for multiple applications.

Ideal for mini motorcycles, dirt bikes, ATVs, go-karts, sliding doors, irrigation systems, and other chain drive equipment, this tensioner is wear-resistant and corrosion-resistant, ensuring long-lasting performance. The easy-to-assemble design simplifies installation—simply fit the shaft with two bearings. Always verify dimensions to ensure compatibility with your specific chain size or application needs.

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