As with all racing safety equipment, racing suit fitment is critically important, and the racing suit user can increase the risk of injury if they are not fitted properly. Please refer to the general racing suit sizing chart below for proper racing suit fitment.  This chart is for ADULT racing suit sizing only.  YOUTH, JUNIOR and CHILDREN sizes are not included on this sizing chart.  If you need a suit size outside of this chart range, please contact our Technical Sales staff for size availability within the Impact™ Racing product offerings.  

Properly Measuring Fitment For Impact™ Racing Standard Racing Suits

Locate a cloth tape measure and record the following body measurements:

  • A - Height - Stand against a wall, ask someone else to measure from the floor to the top of the head, keeping the tape vertical.

  • - Weight - Using a scale, record the weight of the person being fitted for a driving suit.

  • C - Chest - Measure around the fullest part of the chest, under the armpits, keeping the tape horizontal.

  • D - Waist - Measure around the natural waist line, in-line with the navel, keeping the tape horizontal.

  • E - Hips - Measure the circumference around the fullest part of the hips, about 6-7 inches below the waist line, keeping the tape horizontal.

  • F - Thigh - Measure the circumference around the fullest part of the thigh approx 4" below the crotch area.

  • G - Calf - Measure the circumference around the fullest part of the calf muscle.

  • H - Back Shoulders - Standing straight up, have someone else measure the distance from shoulder bone edge to shoulder bone edge.

  • I - Inseam - Stand against a wall, have someone else to measure from the crotch to the bottom of the leg.

  • J - Forearm - Measure the circumference around the fullest part of the forearm.

  • K - Straight Arm - Measure from the top shoulder to the wrist with arm relaxed straight down.

  • L - Front Torso - Measure from the center of the collar bones on the center upper chest down to the crotch. This is one of the crucial measurements that helps a suit fit the best.  Be sure to stand up straight and measure all the way down to the crotch.  Do NOT take this measurement while wearing baggy clothing.

Once measurements are completed, please refer to the sizing chart below to find the Impact™ Racing racing suit size that best fits your measurements.  If you DO NOT find a suit size that works well, you may have to consider having a custom racing suit made by the factory.  If this is the case, please refer to the CUSTOM RACING SUIT section listed below. 

Remember, a properly fitted racing suit is important for both maximum safety and overall driver comfort.

Impact™ Racing - Standard Adult Suit Sizing and Fitment Chart***
 Factory Size
 A - Height (ft./in.)
5'-4" to 5'-6"
5'-6" to 5'-8"
5'-8" to 5'-10"
5'-10" to 6'-1"
6'-1" to 6'-2"
6'-2" to 6'-4"
 B Weight (lbs)
130 to 150
150 to 170
170 to 190
190 to 210
220 to 240
250 to 270
 C Chest (in.)
41" to 43.5"
44" to 47.5"
48" to 51.5"
52" to 55.5"
56" to 59.5"
60" to 63"
 D - Waist (in.)
29" to 32.5"
33" to 36.5"
37" to 40"
41" to 44.5"
45" to 48.5"
49" to 52.5"
 E - Hips (in.)
34.5" to 37.5"
38" to 41.5"
42" to 45.5"
47" to 49.5"
50" to 53.5"
54" to 57.5"
 F - Thigh (in.)
21" to 22"
22.5" to 24"
24.5" to 26"
26.5" to 28"
28.5" to 30"
30.5" to 32"
 G - Calf (in.)
17" to 17.5"
18" to 18.5"
19" to 19.5"
20" to 20.5"
21" to 21.5"
22" to 22.5"
 H Back Shoulders (in.)
16.5" to 18"
18.5" to 19.5"
20" to 21"
21.5" to 22.5"
23.5" to 24"
24.5" to 25.5"
 I - Inseam (in.)
29" to 30"
30" to 31"
31" to 32"
32" to 33"
 J - Forearm (in.)
12.5" to 13.5"
13.5" to 13.75"
14" to 14.25"
14.5" to 14.75"
15" to 15.25"
15.5" to 15.75"
 K - Straight Arm (in.)
22" to 22.75"
23" to 23.5"
25" to 24.5"
24.75" to 25"
25.5" to 25.75"
26" to 26.5"
 - Front Torso (in.)
27" to 28"
28.5" to 29.5"
30" to 30.5"
31" to 32"
32" to 33"

Racing Suit Sizing Chart Note:  Junior sizes for Impact™ Racing Suits are also be available. Please contact our Technical Sales staff for availability and pricing.

Impact™ Racing - Custom Racing Suits

Impact™ Racing Custom Racing Suits are made in the USA and are the culmination of over 50 years of race safety experience and continual research & development.  If you require a custom-tailored racing suit made to your specifications, get a head-start now by downloading the Impact™ Custom Racing Suit Order Form by clicking the button at the right.   After you have taken your measurements, please contact our Technical Sales staff for a price quote and estimated delivery date.

Racecar Engineering™ Has All of Your Racing Safety Gear Needs Covered

Please remember that Racecar Engineering™ carries a full assortment of Impact™ Racing suits. On top of that, we also have in stock and ready to ship, driving gloves and shoes, underwear, hoods, socks, helmets, helmet supports, harness pads, restraints, helmet skirts, gear storage bags and much more.

Browse our wide selection of safety products and buy online today.  If you have questions about choosing the right safety equipment for your motorsports segment, please contact one of our Technical Sales Associates for assistance.

At Racecar Engineering™ we make every attempt to be every racer's 'One-Stop Safety Shop'.

Return To:  Main Technical Center Page  |  Racing Suit Info/Sizing Chart Page - All Brands

Related Tech Safety Topics:  Racing Helmets | Driving Gloves | Driving Shoes | Head and Neck Restraints | Racing Seats

*** RACING SUIT SIZING/FITMENT CHART DISCLAIMER: This racing suit sizing/fitment chart has been created by Racecar Engineering™ for our customer's reference and ease-of-use using the latest fitment information available from the factory.  Please always refer to the factory website, factory printed materials and factory personnel advice for the latest racing suit information about their brand of safety product.  The Impact™ Racing factory website can be accessed directly at (link opens new page) - Racecar Engineering™ is not responsible for any typographical errors contained in this racing suit sizing chart/fitment material or the end-user's failure to verify & follow factory fitment specifications.