Single-Lock Synchro Mechanism

When you recline, your seat tilts back at half the rate. Your feet stay on the floor.

Featherlite Contact High Back synchro mechanism
Fig. 1: Single-lock Synchro mechanism, Contact series

What 2:1 means

A standard tilt mechanism rotates the entire chair around a single pivot point. When you lean back 20°, your feet leave the floor.

A synchro mechanism splits the tilt: the back reclines 20°, but the seat pan only reclines 10°. Your feet stay grounded. Your eye level stays roughly constant. The chair moves with your spine, not against it.

Seat-to-back tilt ratio 1 : 2 (synchronised)
Back recline range 14° (upright) to 24° (relaxed)
Seat tilt range 7° to 12°
Lock positions 1 (lock or free-tilt)
Tilt tension Adjustable via under-seat knob
Used in chairs Contact, Versa, Astro

Synchro variants in the Featherlite range

Versa without Headrest synchro mechanism
Versa: Synchro without headrest
Enzo with Headrest mechanism
Enzo: With headrest variant

When to use which mechanism

  • Single-lock Synchro: Best for users who shift between upright and reclined frequently. Encourages active sitting.
  • Multilock with seat-slide: Best for users who pick a position and stay there for hours. More fine-grained positional control.
  • Dynaflex: Best for users with lumbar pain who need constant contact across recline range.