Suspension Mounts

These are the mounts where the suspension arms attach to the chassis and are known by various names depending on the manufacturer, such as:

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Front arms, mount at front of arm

• A mount
• Front-front (FF)
• Front outer

Front arms, mount at rear of arm

• B mount
• Front-rear (FR)
• Front inner

Rear arms, mount at front of arm

• C mount
• Rear-front (RF)
• Rear inner

Rear arms, mount at rear of arm

• D mount
• Rear-rear (RR)
• Rear outer

Different cars allow different adjustments to these mounts, but these are the possibilities:

A/B or FF/RF

• Move mounts out to increase track width
• Move mounts up to increase roll center
• Move front mounts up or rear mounts down to increase kick-up
• Move front mounts in or rear mounts out to increase sweep / toe-in

C/D or RF/RR

• Move mounts out to increase track width
• Move mounts up to increase roll center
• Move front mounts up or rear mounts down to increase anti-squat
• Move front mounts in or rear mounts out to increase toe-in (which will also shorten the wheelbase)

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