The 513 is similar to 511 and 515 but with an integrated head rest, giving extra upper back and head support. With its thin back it allows the seat to be adjusted further back on the slide rails giving more leg room in small cabin trucks * Wide base mechanical suspension with 100mm stroke * 50-120kg weight adjustment * 60mm seat height and tilt adjustment * Suspension cover * 200mm slide rail adjustment * Provision for second damper * 5 position lumbar adjustment Full back angle recline