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Because these chains do not use sealing rings, you will benefit from reduced friction and increased performance making them ideal for sprint racers The RX chains are similar to the RXO line without the Quadra-X Ring seals, saving nearly half-a-pound versus their sealed counterparts Features CRH-treated connecting pins for increased strength and longer wear Pitch: 1/2 in / 12.700 mm Width: 3/16in / 4.76 mm Pin diameter: 3.96 mm Pin length: 13.20 mm Roller diameter: 7.77 mm Plate Thickness inner: 1.50 mm Plate Thickness outer: 1.50 mm Tensile strength: 4600 lbs / 20.4 kN Wear Life Index std. as...