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1974-2011 Yamaha YZ250
Built from 6061 billet aluminum
2008-2020 Yamaha YZF-R6
2024 Kawasaki KRF1000 Teryx KRX 1000 Special Edition
OEM# 507-0324-76
Protaper 033399 PTR Rear Sprocket - Aluminum eyewear-eyewear-accessories 1974-2011 Yamaha YZ250Race Spec (RS) Rear Sprockets feature our revolutionary Angled Mud Groove. This exclusive design creates a self cleaning effect during operation, shedding away mud that would otherwise lead to horsepower loss and sprocket wear. With their precise CNC machining and unique layout, these grooves also allow an increase in tooth surface area of up to 40% over competing sprockets. As a result, contact with the chain is significantly improved, leading to a
