Replacement shock link for Blackthorn 1.0 frames.Allows for conversion of Cassidy 1.0 frames to 140mm rear travel found on Blackthorn in pairing with FS0028 Fits 2020–2024 Blackthorn and Blackthorn C 1.0 and Cassidy and Cassidy C 1.0; will NOT fit 2025+ Blackthorn C 125 or Blackthorn C 145 Use ONLY with compatible 210 x 52.5–55 mm-stroke air or coil shocks Best paired with a 140–160 mm suspension fork Includes bolts Please consult the Split Pivot + instructions for complete conversion requirements and steps