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#MOTOCROSS RACE GEAR HOW TO#
ORDERING / FAQ / Downloads / Design Templates / Sizing Charts / Color Charts / Catalogs / How to Order. The chart below gives you the gear ratios for the most common sprocket combinations. / Custom Race Gear / Motocross / Cycling / Screen Printing / Embroidery / Promotionals / Fan Zone Merchandise / Sabelt Racing Gear. Choosing the proper gear ratio is a cheap way to make your bike perform better by making it feel more powerful (by gearing it down) or more manageable (by gearing it up). Most MXA test riders try to gear their bikes so that they can use third gear on the bike more, especially if the power lags on the shift from second to third gear. Recognized as one of the most strenuous sports in the world, motocross is also one of the most fun. A combined score from each moto is calculated to determine the overall placing. This 13/50 gearing would be lower than either 14/52 (3.71) or 14/53 (3.79) at a 3.85 gear ratio. Motocross races are run over natural- and man-made terrain courses with hills, jumps, and tight turns, typically with two races or motos in each class. In this case, the better solution would be to switch to a 13-tooth countershaft sprocket and mate it to a 50-tooth rear sprocket. Switching to the logical 54-tooth rear sprocket would give him a lower 3.86 gear ratio, but the large 54-tooth rear sprocket would have trouble clearing the chain guide and put excessive wear on the chain itself. But, if the rider wanted the gearing to be lower than that, he would be in a conundrum. This 14/53 combo would lower the gear ratio to 3.79 (compared to the stock 3.71). But, if the bike’s owner wanted lower gearing, he would most likely add one more tooth to the rear sprocket. For example, a 14/52 gearing combo has a 3.71 gear ratio.
When thinking about your bike’s gearing, the goal is to maximize performance for your riding style, skill level and track conditions. For example, using our stock 13/49 as a starting point at 3.77, a 13/46 combo would produce a 3.54 gear ratio.
Conversely, if you want to mellow the engine’s hit and increase the speed in each gear, you should seek a smaller gear ratio number. Every time the gear ratio number goes up, you lessen top speed but increase acceleration. Thus, the 3.77 of a 13/49-tooth combo becomes a 4.00 if you add three teeth to the rear sprocket (13/52). The higher the gear ratio number, the lower the gearing.
#MOTOCROSS RACE GEAR FULL#
This gearing combination is said to have a 3.77 gear ratio, because that is how many times the countershaft sprocket turns before the rear wheel makes one full revolution. For example, a 13-tooth countershaft sprocket will divide into a 49-tooth rear sprocket 3.77 times. You get the gear ratio by dividing the number of teeth on the rear sprocket by the number of teeth on the countershaft sprocket.
Once you know the number of teeth on your bike’s countershaft sprocket and rear sprocket, you can determine a reference number-called a “gear ratio”-that tells you exactly what is happening to your motorcycle’s driveline.
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