Black Dual Series
BLACK DUAL chains have a natural steel color and are available in 520 and 525 dimensions only. Manufactured with high carbon alloy steel components, solid bushings and rollers, shot-peened plates, pins and rollers to reach high fatigue resistance. Laser marking on outer plates to identify dimension, model and origin. Submitted to performance enhancing pre-stretching, also thanks to the Z-Ring seals, BLACK DUAL chains ensure high mileage, reduced elongation and extended lubrication intervals.
Chain Ref | 525 | Reina Ref | 137ZRA | Pitch (p) | 15.875mm | Pitch (p) | 5/8in | Inner Width (w) | 7.95mm | Inner Width (w) | 5/16in | Roller Ø (r) | 10.23mm | Plate Thickness (t) | 2.2mm | Plate Thickness (s) | 2.2mm | Pin Legnth (l) | 23mm | Weight | 1.13kg/m | Weight | 1.79kg/100 links | Weight | 3.96Lbs/100 links | Avg. Tensile Strength | 34.800 N | Avg. Tensile Strength | 7823Lbs | Seal | ZR | Colour | Black | Connecting Link | 19+44 |
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