• THOMSON OVERSIZED SEAT RAIL BOTTOM CLAMP BLACK

    Cyclone Bicycle Supply

  • $23.95

  • Description

    7x7mm has been and continues to be the dominant standard for saddle rail size. Thomson's standard seat post clamps are optimized for 7x7mm rails. Now that rails are being made from carbon fiber many new saddles have rails that are from 7x9 to 7x10mm.

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