SKU: 78361291805

Sparco Circuit II QRT Seat

Sale price$508.05 Regular price$564.50
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Shipping Estimate
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

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For Your Every Summer RSVP, with Code: SUMMER15

Description

Sparco Circuit II QRT SeatThe Circuit II QRT is a wider version of the Circuit QRT which was designed to provide additional head and neck protection. Made from aramadic fiber reinforced fiberglass with all new QRT Technology, the Circuit II QRT features a wider shell to accommodate a larger driver. The Circuit II QRT includes integrated head bolsters to protect the head and deep side bolster for maximum lateral containment. This seat can be used with an FHR (frontal head

The Circuit II QRT is a wider version of the Circuit QRT which was designed to provide additional head and neck protection. Made from aramadic fiber-reinforced fiberglass with all-new QRT Technology, the Circuit II QRT features a wider shell to accommodate a larger driver. The Circuit II QRT includes integrated head bolsters to protect the head and deep side bolster for maximum lateral containment. This seat can be used with an FHR (frontal head restraint) device for even greater protection. The ultra-light shell is then wrapped in an impact-absorbing and fire retardant fabric that helps hold the body. The Circuit II QRT is FIA approved.

Sizing

  • Large – up to a 36” waist (pants size)

Designed and developed at the Sparco OEM Composite Laboratory in Italy, QRT is a patented state-of-the-art technical process, based on aerospace technologies. QRT creates an unparalleled mechanical strength to weight ratio. This innovative production method generates the lightest composite seat shells currently on the market; in fact, it guarantees a reduction in total weight of up to 30% compared to traditional production methods.

Features

  • QRT Technology – 30% Weight savings
  • Made for large size driver
  • Integrated head bolsters for greater safety
  • Fire retardant fabric
  • Special non-slip fabric
  • FIA approved
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 78361291805

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4.1 ★★★★★
Based on 562 reviews
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Cait E
Massapequa, US
★★★★★ 5
These ACTUALLY stay put all day long - I was skeptical, but am so glad I took a chance on these
Size: Medium, Color: (014) Halo Gray / Halo Gray / Castlerock
I was so skeptical about whether these would stay on my feet all day without sliding down into my shoe - I’ve tried so many socks in the past with the silicone strip on the heel which failed. I’ve owned these for a couple months now and they have never slipped down - they stay put all day! I love the variety of colors to choose from, and the value per pack is great since six pairs come per pack (I thought it was only three when I first purchased and was pleasantly surprised by the additional pairs). They also have perfect thickness - not too warm to wear during the summer months with sneakers; I live in a tropical climate, though, so I’m not sure how they will do in cooler climates. I’ve washed each pair once or twice and the color and quality of the silicone has stayed so far (knock on wood). Overall: high recommend based on my experience so far!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 13, 2025
M
Verified Purchase
Maggie Vega
San Leandro, US
★★★★★ 5
Great fit!
Size: Medium, Color: (403) Washed Navy / Washed Navy / Blue Smoke
Great quality!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
K
Verified Purchase
Kira Stewart
Louisville, US
★★★★★ 5
My favorite socks
Size: Medium, Color: (659) Fuchsia Dusk / Fuchsia Dusk / Tourmaline Pink
Very comfortable. True to size. Moisture wicking
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
T
Verified Purchase
Theresa
Whiting, US
★★★★★ 4
No show but stays on
Size: Medium, Color: (014) Halo Gray / Halo Gray / Castlerock
I wear these socks daily. They truly don’t show with my workout shoes or with hey dudes. But the best thing about them is that they actually stay on your foot. I work out hard and I don’t ever have to pull them up. I do wish they were just a little bit thicker than they are, but they are definitely a product I will buy again.
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Reviewed in the United States on May 22, 2026
M
Verified Purchase
Marlana
Belleville, US
★★★★★ 5
I like the ankle length, they don’t slip.
Size: Medium, Color: (025) Castlerock / Castlerock / Anthracite
I love these socks, they are thick enough to not be scratchy, thin enough to be cool and breathable.
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Reviewed in the United States on March 28, 2026

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