In this type of damage, opposite corners of the center section of frame are at different heights.

• A. Diamond Damage
• B. Twist Damage
• C. CANbus
• D. Drum

Answer: (B)

Twist damage is identified when the center portion of the frame is rotated so that opposite corners sit at different heights. This happens when a heavy impact applies forces along the frame in a way that warps it around its long axis, causing one corner of the center section to rise while the diagonally opposite corner drops. The result is a twisted frame that affects how the vehicle sits and how body panels align, often producing noticeable misalignment in door gaps, hood fit, or bumper mounting.

This contrasts with other patterns you might hear about. Diamond-like distortion describes a different center-area shape—more of a symmetrical, diamond-shaped deformation—where the issue isn’t a simple rotational twist but a more complex multi-point distortion. CANbus isn’t a physical framing term at all; it refers to the vehicle’s electrical communications network, so it wouldn’t describe how the frame sits. Drum isn’t a recognized frame-damage category, either, and doesn’t capture the rotational misalignment described here.

So the description of opposite corners at different heights directly points to twisting of the center frame.