BOX TWO 4 BOLT CHAINRING BLACK

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Made in the US from 6061-T6 aluminum alloy, Box Two™ Chainrings are round and true. They fit 104 BCD four-bolt cranks and are available in black anodized with laser-etched graphics from 38 to 45-teeth. FEATURES 104 BCD Compatible 3/32" Chain Compatible Anodized Aluminum Optimized For Stiffness Lightweight Cutouts SPECIFICATIONS BCD 104mm Material 6061-T6 Aluminum Origin Made in USA Thickness 3.5mm 38 Tooth 73 grams / 2.57 ounces 39 Tooth 78 grams / 2.75 ounces 40 Tooth 79 grams / 2.78 ounces 41 Tooth 84 grams / 2.96 ounces 42 Tooth 87 grams / 3.07 ounces 43 Tooth 90 grams / 3.17 ounces 44 Tooth 92 grams / 3.25 ounces 45 Tooth 96 grams / 3.38 ounces Show more