The Giant Defy Advanced SL ISP Spacer Set & Clamp is a set of alloy spacers designed for Giant Defy Advanced SL bikes with integrated seatposts. It includes the ISP clamp, which provides a wide range of fore/aft adjustment essential for making minor adjustments to extend the cut seatpost.
Giant My16+ Defy SL Isp Spacer Kit
The Giant Defy Advanced SL ISP Spacer Set & Clamp is a set of alloy spacers designed for Giant Defy Advanced SL bikes with integrated seatposts. It includes the ISP clamp, which provides a wide range of fore/aft adjustment essential for making minor adjustments to extend the cut seatpost.