Simpson Racing SFI 5 Custom SLT Racing Suit

Simpson Racing SFI 5 Custom SLT Racing Suit

The Simpson Superior Lightweight Technology or Simpson SLT combines over 60 years of racing innovation with NASA Aerospace advancements to deliver our most lightweight and breathable suit ever. The SLT comes standard with our new 3D Honeycomb UltraSoft Liner and new Comfort Fit cuffs. This outstanding performance of weight, breathability, and comfort has been achieved while exceeding the stringent SFI standard of 3.4/2A.  Our newest and most advanced layup can be used in any of your favorite fits, including our most popular DNA. Feeling is believing, order your new favorite suit today.

  • SFI.5 approved Nomex® racing suit
  • STD 3 layer suit
  • Made in the USA
  • New 3D Honeycomb UltraSoft Knit layers give your our most softest layers while adding outstanding breathability
  • New Comfort Fit cuffs replace traditional cuffs, minimizing material at the wrist and eliminating bunching in the glove gauntlet area
  • X-Tech stretch elbows: pre-bent
  • 4-way stretch allow for effortless movement of the arms, helping with fatigue and stopping the sleeve from migrating up the arm4-way stretch body panels reduce tension across the back, torso, waist, hips and thighs
  • Stretch panels offer improved ventilation in key area of the body
  • Stylish outside pockets lay flat to eliminate bunching and require less material
  • Embroidered trim adds style without adding unwanted weight
  • Exceeds the SFI 3.2/4 FR Standard


60 years of safety

Racing and riding is more than what you do, it's a part of who you are. We get it, because it's who we are too. Since 1959, NASCAR, racing enthusiasts and motorcycle riders have trusted Simpson Performance helmets, head and neck restraints, harnesses, racing suits, gloves, shoes, off-road seats, window nets, drag parachutes and more to provide an unparalleled level of comfort, performance and protection.