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Bicycle drive chain standard dimensions | BikeGremlin
A bicycle chain consists of a series of small links, each 12 mm long between the centers of the pins. The pin diameter is 2.5 mm. The length L of the crank
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AZSSMUK 08A 40# Roller Chain - 5 Feet 40Mn Carbon Steel Material with 1 Connecting Link for Go Kart, Mini Bike Chain Replacement : Amazon.co.uk: Business, Industry & Science