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Upgrade your Harley-Davidson’s transmission with the MCS Transmission sprocket, 21t – HD 4-speed BT 80-85 and experience reliable, precise gear engagement that keeps your ride smooth and responsive. Designed specifically for 1980-1985 Big Twin 4-speed models, this sprocket delivers consistent performance without breaking the bank, making it a smart choice for riders who demand durability and value.
Whether you’re restoring a classic or upgrading your ride, this MCS sprocket is built to keep your transmission running strong and your bike feeling sharp. Don’t settle for less when it comes to your Harley’s drivetrain—choose the MCS Transmission sprocket for dependable, affordable performance every mile of the way.
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