The DSH025 Abdominal Crunch is a plate-loaded core machine that trains the rectus abdominis and obliques through a precision linkage system that follows the natural curve of the spine. A 3-position seat angle shifts loading between the rectus abdominis and both oblique groups. Built from PT60x120x2.5mm steel in matte black with a 661 lb bilateral capacity at 48.0"x44.9"x64.4", the DSH025 delivers heavy progressive plate-loaded ab training in one station. Precision linkage arc: Follows the natural spine curve through the full crunch, delivering smooth, isolated tension floor crunches cannot match. 3-position seat angle: Shifts emphasis between rectus abdominis and both oblique groups from one machine. Extra-long rubber handles: Fit different shoulder mobility ranges without forcing excessive flexion that pulls effort away from the abs. Angled pelvic pad: Matches natural posterior pelvic tilt, keeping the pelvis stable through every rep. How to Assemble Abdominal Crunch Machine DSH025