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One of the most popular upgrades to streetbikes is changing out the sprockets and chain for a custom look and to change the final gear ratio for more acceleration. Vortex offers 520 sprocket ratio options with multiple colors available from Riders Discount. Vortex's CAT5 520 sprockets look a bit more unique with the same proven Vortex design but color anodized. Vortex offers the CAT5 look in black, blue, and red (not pictured). Or, the standard aluminum sprockets work just as well, shown here in either anodized silver or black. The black shown here is hardcoated for increased durability. Pictured here for a Yamaha R6, combine them with an EK MVXZ or DID ERV3 chain for a complete kit. Multiple gearing combinations are available, including stunt sprockets up to 74 teeth (special order only). Be sure to ask your Riders Discount rep what's right for you. 525 and 530 options also available, steel sprocket alternatives are available in black only. For more information or if you'd like to place an order, send MIKE a message through this forum or give him a call at 866.931.6644 ext. 804. Is email more convenient? Write to us at FORUM at RIDERSDISCOUNT dot COM, and we'll get back to you right away!