The GC42 cassette cog is so big that when machining the first batch, the machinist thought he made a mistake! The GC line of cassette extender cogs allow you to modify your 10 speed cassette into a wide range cassette. To achieve the optimal shifting, the GCs are optimized for Shimano or SRAM cassette.
*Not all on-line items are in store for immediate purchase. Please inquire as to status if concerned.
650 Hillside AVE.
Hours: Mon-Sat 9:30-6
2426 Bevan AVE.
Phone: P: 250.656.1512
Hours : Mon-Sat 9:00-5:30
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