REAR SPROCKET STEEL JTR897.52SC, LIGHTWEIGHT SELF-CLEANING, SR897-52, JTR897.52, SR897-52Part No. SR990 52. S. JT. SC (phoenixmotos. com) JT SC is the new standard in steel rear motocross sprockets. Unique self cleaning design that keeps the contact area clean from dirt and mud while significantly reducing weight. Heat induction hardened C45 steel lasts up to six times longer than a 7075 aluminium sprocket and greatly extends chain life. Engineered and finished to the highest quality level in black zinc by JT Sprockets, the worlds largest

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