• High quality, all steel sprockets meet the demands of todays highest horsepower machines
• Powerdrive countershaft (front) sprockets are manufactured from case-hardened chromoly steel for the ultimate in strength and durability
• They also receive a parkerizing surface treatment for rust and corrosion resistance
• Sunstar steel rear sprockets are manufactured from the highest quality 1045 high-carbon steel, and most are heat treated for added strength and wear resistance
• Computer designed weight reduction holes are included where possible
• Most rear sprockets are zinc plated, and some have a baked-on durable paint for corrosion resistance
• Many conversions are available from unpopular 632 and 532 sizes to 630 and 530 sizes for better chain selection, as well as other lighter-weight options for racing
• Any time you use other than the standard front/rear sprocket sizes, clearance must be checked. When converting to a smaller chain size, especially for racing, be sure to use the highest grade 0-ring chain available (non-O-ring heavy-duty acceptable for drag racing)

(1) 39T. Black steel rear sprocket

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