The stock bar is 24.2 mm on the 328i/330i w M-Sport which means the new bar can be adjusted from 50% to 81% stiffer than the stock front sway bar.

• Front - 3 hole bar with 3 possible positions on bar; Rear - 3 hole bar with 3 possible positions on bar
• Front - Large 28mm size (stock bar is 21.2 to 24.2mm depending on application); Rear - Large 19mm size (stock bar is 12-15mm depending on application)
• Less body roll
• More mechanical grip
• More stable at the limit
• Only tubular anti-roll bars with a large range of adjustment on the market
• Tubular (hollow) construction