50MM 23TH 428 SPROCKET Made in Italy, These 50mm Ergal sprocket is known for its durability and finish. High Quality Ergal 7075-T6 aluminum. The Inner Diameter of the sprocket is a true round 50mm hole not like other 50mm sprockets that are not round. The two piece sprocket lines up perfectly and has a smooth finish. A set screw is used to hold the key-way on the axle for high horsepower 125cc engines.
These Sprockets also Fully Clamp down on the axle with no gap in-between and will not crush the axle.
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