The 523 uses a heavy duty wide base suspension unit with weight capacity of 80-150kg.

It has a T3 seat upper with an integrated head rest giving good upper body support.

• 100mm mechanical suspension stroke
• 60mm seat height and tilt
• 80-150kg weight adjustment
• Full seat back recline
• 200mm slide rail adjustment
• Provision for second damper
• 5 position lumbar adjustment Integrated head rest