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Transmission Sprockets

.200 Offset Sprocket
.500 Offset Sprocket
.900 Offset Sprocket
Custom Offset Sprockets

By the mid-1980’s, Harley was using the belt drive secondaries in 100% of their Big Twins. The same 1-1/2 wide belt is still used today because it is quiet, clean, and dependable. These belts are the only way to go until you start using an engine that makes serious power. When the engine displacement is above 107ci in a decent state of tune, the life expectancy of the secondary belt is severely degraded. Furthermore, if you are running a big meat on the rear, you will be hooking up hard to the pavement, especially in the lower gears; this will destroy your belt. Simply put, the belt drive system is not designed to transmit this amount of torque to the rear wheel and deal with the severe shock loads. In performance applications, the tried-and-true 530 chain drive secondary drive is the only dependable way to transmit big torque.

BAKER Drivetrain offers many 530 chain size transmission drive sprockets for your performance needs for 1985-up Big Twin and 91-up Sportster/Buell. Our sprockets are made in the U.S.A.

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.200 offset sprocket

.200” offset sprockets are modeled after the factory 21 tooth Sportster sprocket, P/N 37709-89, except this series is available with various tooth counts for flexibility in dialing-in your secondary drive ratio.

19 Tooth Sprocket p/n 19T02-56
20 Tooth Sprocket p/n 20T02-56
21 Tooth Sprocket p/n 21T02-56
22 Tooth Sprocket p/n 22T02-56
23 Tooth Sprocket p/n 23T02-56
24 Tooth Sprocket p/n 24T02-56

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.500 offset sprocket

The .5” sprocket series permits use of a wider tire than stock and great flexibility in dialing-in your secondary drive ratio.

21 Tooth Sprocket p/n 21T05-56
22 Tooth Sprocket p/n 22T05-56
23 Tooth Sprocket p/n 23T05-56
24 Tooth Sprocket p/n 24T05-56

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.900 offset sprocket

This sprocket is the maximum offset that can be used without any modification to the stock inner primary. This makes it possible to run a 180 rear tire with no transmission offset or primary drive monkey business required. Some rear fender modification may be required.

24 Tooth Sprocket, .9” Offset p/n 24T09-56
23 Tooth Sprocket, .9” Offset p/n 23T09-56

custom offset sprockets

We now offer a custom offset sprocket service. 23 or 24 tooth sprockets are available with any specified offset from .650 to .909; you give us the desired dimension. With a 33344-94 sprocket spacer installed in your transmission, measure the distance from the left side of the transmission case to the desired inside of the sprocket teeth and subtract .193” to calculate the required offset. 530 size o-ring chains are 1.02” wide and conventional chains are .850 wide so make sure you have proper clearance on the outside of the chain. We ship your custom offset sprocket 1 week after you place your order.

24 Tooth Sprocket, Custom Offset p/n 24TC-56
23 Tooth Sprocket, Custom Offset p/n 23TC-56