Kimpex Drive Sprocket

$$How to read the sprocket application chart?

1. Select the desired model in the application chart by consulting the make, model, and year columns.
2. The stock size for the desired model is provided in the OEM Gearing column.
3. All sprockets listed between the top and bottom dividing lines fit the chosen model. Simply choose the desired ratio from the selection guide column and then choose the desired ROC sprocket in the appropriate column to the right.

Additional information:

$$ By changing the front and rear sprockets, you can alter the final drive ratio of your motorcycle or ATV, which partly determines the speed at a given RPM. The gear ratio refers to the ratio of the front and rear sprockets. For example, a stock Suzuki GSXR600 has a 16-tooth front sprocket and a 45-tooth rear sprocket, resulting in a ratio of 45/16 or 2.81. Installing a larger front sprocket or a smaller rear sprocket decreases the ratio (sometimes called “taller gearing”), which produces more speed at a given engine RPM. Conversely, a smaller front sprocket or a larger rear sprocket results in less speed at a given RPM (“shorter gearing”).

Performance ratings can be increased to a certain point through sprocket selection, but the primary factor remains your engine's power and its characteristics. Choosing the right gearing optimizes the use of the powertrain and maximizes the power delivered to the rear wheel under given conditions.

The speed for a given set of sprockets is determined as follows:
Speed = (RPM X rear tire circumference X front sprocket) / (primary gear ratio X 6th gear ratio X rear sprocket X 1056)

$$Stock motorcycles are generally equipped with sprockets that allow them to reach their top speed just below the peak power in top gear. Changing to a 44/17 ratio on a GSXR600 will reduce the top speed because in 6th gear the engine turns much slower and does not have enough power to reach top speed. Reducing the gearing to 46/15 will cause the engine to reach peak power sooner, which will result in a slower top speed. However, this is where choosing sprockets can be advantageous: at a given cruising speed and a given gear ratio, reduced gearing will make the engine turn faster and produce more power.

A popular modification consists of replacing the stock machine's 530 or 525 chain with a thinner, lighter 520 chain, with matching sprockets.$$

• Number of teeth37
• Chain width420
• MaterialSteel
• Compatible brandHONDA
• Number299001