Address & Opening Hours: Thunder BMX Shop, 77 Ladas Drive, Belfast, Bt6 9fr. Open Wed - Sat 11.30 - 5.30pm.
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Tel: 07490154601
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The Isogram sprocket…. Is a beefed up fully CNC machined version of the gram sprocket, made right here in Leeds from 7075 Aluminium so it’s lighter and stronger than its predecessor.
specs…
7075 aluminium
7mm thick
weight 95g (30t)
24mm centre (top hat washer not included)