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CREATOR: gd-jpeg v1.0 (using IJG JPEG v80), quality = 80 Sparco K-Carbon Short Sleeve Top From £56.40 Incl. VATFrom £47.00 Excl. VAT
Sparco Softknit Balaclava black – GSM Performance Sparco Softknit Balaclava From £14.40 Incl. VATFrom £12.00 Excl. VAT

Sparco B-Rookie T-Shirt

From £13.00 Excl. VAT

Inc/Exc VAT
SKU: SKW002204 Category:

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The Sparco B-Rookie is a cotton T-shirt from the karting underwear range. Part number SKW002204.

It is 100 per cent cotton in a regular fit, machine washable, with the Sparco logo across the chest. It is cut to be worn under a kart suit, which is why it sits in the underwear range rather than in general clothing: a plain tee bunches at the shoulders under a suit and this one does not.

The thing to be clear about

This is not flame retardant and it carries no FIA approval. It is cotton. If your series requires FIA 8856-2018 underwear, a cotton shirt will not satisfy it and you need the Nomex range instead. Ask us and we will point you at the right one.

Where it is right is karting, testing, track days and club events where flame retardant underwear is not part of the regulations, and as something to wear around the paddock the rest of the time.

Cotton against synthetic is a genuine comfort choice as well. Cotton breathes and feels better in a warm paddock, and it holds sweat where a technical fabric moves it. For a day in a kart that is usually the right trade.

Sizes and colours

S through XXL, in black, white, blue, red or yellow. Chosen at the top of the page.

If you are buying for a junior driver, send us their chest measurement rather than an age and we will check the size before it goes out.

Additional information

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Karting underwear size guide

Kart underwear is sized on your body, the same chest and waist measurements as a kart suit. The complication is that this category uses four different labelling systems, sometimes within the same brand.

System Sizes Which products
Single letters S, M, L, XL, XXL OMP Padded Shorts, Alpinestars Tech KX, Sparco B-Rookie
Paired letters XS-S, M-L, XL-XXL The OMP KS range, Alpinestars Ride Tech
Wide pairs S/M, L/XL, XXL/XXXL OMP KS Winter-R tops and long johns
One size no choice All the balaclavas: OMP KS, Sparco Rookie and Softknit, Alpinestars Ride Tech
The quickest routeSize it from your kart suit. The letters follow the same body ladder. If you are a Sparco M kart suit you are a Sparco M top and shorts. If you have not bought the suit yet, measure your chest and waist and use those.

Measure these

AChestAround the fullest part, under the armpits, tape horizontal.
BWaistAround your natural waist, level with the navel.
CShoe sizeOnly needed for socks. They go by foot, not by clothing size.

Charts

SparcoLetters follow their body ladder.▼
Letter Suit size Chest (cm) Waist (cm)
XS 44 / 46 86 – 93 74 – 81
S 48 / 50 94 – 101 82 – 87
M 52 / 54 102 – 109 88 – 97
L 56 / 58 110 – 117 98 – 105
XL 60 / 62 118 – 125 106 – 113
XXL 64 / 66 126 – 133 114 – 121

Sparco publish no separate underwear chart. These are the bands from their own body size chart, which is what their letters follow. The K-Carbon tops run XXS, XS-S, M-L and XL, so the middle two each cover two of these rows.

AlpinestarsXS to XL published, from their tech layer range.▼
Letter Chest (cm) Waist (cm)
XS 86 – 90 72 – 76
S 90 – 94 76 – 80
M 94 – 98 80 – 84
L 102 – 106 88 – 92
XL 106 – 110 92 – 96

Their own chart jumps from 98 cm to 102 cm between M and L, so a 98 to 102 cm chest falls in a gap. Ring us if that is you.

OMPSold in letters and pairs with no published measurements.▼

OMP put a size chart on every kart suit, boot and glove product page but not on their underwear. Rather than convert from another brand’s chart, size the KS range from your OMP kart suit size, or send us your chest and waist and we will confirm before it ships.

The KS Winter-R tops and long johns use unusually wide pairs, S/M, L/XL and XXL/XXXL, so each garment covers three suit sizes. If you are on a boundary there, take the larger.

Socks

OMP sell the KS sock in S, M and L against shoe size rather than clothing size.

Size UK shoe EU shoe
S UK 6.5 – 7 EU 40 – 41
M UK 8 – 9 EU 42 – 43
L UK 9.5 – 10.5 EU 44 – 45

OMP publish the shoe ranges for their racing socks and the KS kart sock follows the same ladder. Kart socks are thicker than everyday ones, so if you are buying boots at the same time try them together or allow for it.

Balaclavas

Every kart balaclava we stock is one size and stretches to fit, including the OMP KS and KS Summer, the Sparco Rookie and Softknit, and the Alpinestars Ride Tech V2. There is nothing to choose. If you wear glasses, an open face style is easier to get on without dragging the arms out of place.

What this layer is for

Everything in this category is marked Non-FIA, and that is normal. Kart underwear is a comfort, wicking and abrasion layer rather than fire kit, which is the opposite of car racing underwear. What it does do is stop the suit chafing over a long day, keep you warm in winter, and add padding at the ribs where the seat works on you.

The padded shorts are the ones people underestimate. They sit between you and the seat and they are the difference between finishing a wet club meeting comfortable and finishing it bruised.

Buying a kart suit at the same time?Measure in the underwear, or order it first. A suit sized over a t-shirt and then worn over a long sleeve top and long johns is the most common reason a suit that should have fitted does not.
Falling between paired sizes?Send us your chest and waist with the range you are looking at. The paired sizing here is wide, so it is worth a check. Call 0115 989 3488 or email Sales@GSMPerformance.co.uk.

Sparco bands from sparco-official.com. Alpinestars from the size guide on their Race V3 Top Tech Layer. Sock ladder from OMP’s published racing sock ranges. OMP publish no kart underwear measurements, which is why they are not tabulated. All checked 2 August 2026.

Offer 1: Pick your free gift!

  • Offer 1: Pick your free gift.
  • We're giving away free gifts when you purchase any racing helmet over £400.
  • Simply add your helmet of choice to your basket, and checkout.
  • A popup will then appear, where you can pick which free gift you want to receive. It's as easy as that!

Offer 2: Automatic free gift!

  • Offer 2: Automatic free gift.
  • We're giving away a gift box full of goodies or a face mask with every order.
  • Simply pick which one you want on the checkout screen

Offer 3: 10% off racing suits!

  • Spend over £500.00 on any FIA racing suit and receive an instant 10% discount.
  • Simply add your suit of choice to your basket and checkout.
  • Your 10% discount will be instantly added to your product. No product code needed!

Offer 3: 5% off your first order!

  • Spend over £150.00 on checkout and receive an instant 5% discount on your first order with GSM Performance.
  • Add the code: New-GSM5 in your shopping basket and the discount will be instantly added to your product entire order.

At GSM Performance, our priority is to maintain the utmost hygiene and quality standards for the benefit of our customers. To that end, we have instituted a policy that all purchases of long johns, balaclavas, tops, and underwear are final and non-returnable. This policy is necessary due to the personal nature of these items, which are worn in close contact with the body. This protocol is intended to guarantee the health and safety of all our customers.

This policy adheres to the best industry practices and safeguards both our customers and our staff. It's important to clarify that this policy does not affect your statutory rights as a consumer. This policy does not apply if you receive damaged or defective products. In such cases, our customer service team is available to promptly address your concerns and arrange a replacement or refund. We greatly appreciate your understanding and adherence to our hygiene policy and thank you for your continued confidence in GSM Performance. For further information please see our terms and conditions which are agreed on checkout. 

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