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Kirkey Seat Sizing Information

How to measure yourself so you can choose the right size seat

Kirkey has built thousands of seats and has optimized the dimensions to fit almost everybody. If none of the standard sizes fit we can custom tailor one to your measurements. Either way, your numbers must be accurate to choose the right seat. Take measurement snug with driving suit on.

NOTE: Extremely important–All measurements must be taken in absolutely straight lines. Use a yardstick or a stagger gauge. If using a tape measure, do not let it follow the curvature of the body.

A – Width of Chest
Gives width of seat at Rib Support. Have driver stand with arms raised slightly, measure side to side 1-1/2" below armpits (use two straight edges placed parallel under armpit).

B – Width of Hips
This is the measurement that we use for fitting our standard seats. Gives width of seat at hip area. Have driver sit on bench or table with legs hanging over side, measure width of hips through center line of body side to side. Do not measure across lap of driver, this will give a wider than required measurement.

C – Height of Armpit
Gives height of rib support. With driver still sitting on bench or table, measure from flat surface to armpit. Make sure driver's shoulders are completely level across back. Make sure driver is sitting with back completely straight.

D – Height of Shoulders
Gives height of shoulder harness opening. With driver sitting in same position as above, measure from flat surface to top of shoulder.

E – Chest Depth
Gives length of rib supports. Have driver stand with back against wall, measure from wall to front of chest approximately 1-1/2" below armpit.

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