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Alpinestars Radar V2 Mechanics Shoes

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Designed with direct feedback from elite pit crews in Formula 1, NASCAR, and IndyCar, the Alpinestars Radar V2 Mechanics Boots are built to deliver lasting comfort, protection, and mobility in high-pressure pit lane and service environments. Engineered for long hours on hard surfaces, these boots combine certified fire protection with durable construction and all-day support.

The robust leather upper is reinforced in key impact areas to resist wear and protect the foot during fast-paced movements, kneeling, and frequent direction changes. Inside, a fire-resistant aramidic lining meets FIA and SFI safety standards, providing essential protection in heat-exposed working conditions. An ergonomically designed mid-sole and heel counter help maintain natural foot alignment, reducing fatigue during extended shifts.

Alpinestars’ exclusive rubber compound sole offers excellent grip on smooth, oily, or polished pit floors while remaining flexible enough for comfortable walking and kneeling. Strategic perforations enhance airflow, while the low-cut rear ankle design and padded collar allow unrestricted movement and improved comfort throughout the day. A dual closure system ensures a secure, adjustable fit that stays reliable under constant motion.

Key Features:

  • Durable leather upper with reinforced heel, ankle, and toe zones.
  • Fire-resistant aramidic lining for FIA 8856-2018 and SFI 3.3 compliance.
  • Reinforced heel and toe boxes for added impact protection and stability.
  • Alpinestars exclusive high-grip rubber sole for traction on pit surfaces.
  • Perforated panels to improve airflow and temperature regulation.
  • Low rear ankle collar to enhance mobility and reduce pressure.
  • TPR ankle support system for added stability during movement.
  • Dual closure system with laces and hook-and-loop strap for a secure fit.
  • Padded collar to improve comfort around the ankle and Achilles.
  • Cushioned mid-sole and ergonomic heel counter to reduce fatigue.

Built for the demands of professional motorsport environments, the Alpinestars Radar V2 Boots deliver certified protection, dependable grip, and long-lasting comfort. They are a practical and reliable choice for co-drivers, mechanics, and pit crew members who need performance-focused footwear that works as hard as they do.

FIA 8856-2018 and SFI 3.3 Approved

Additional information

Approval

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Brand

Colour

Material

Shoe Size

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Product Type

Crew and mechanics wear size guide

Pit and workshop kit is sized on the same ladders as driver kit, so if you already know your race suit or glove size you know this too. The one thing to watch is that overalls come in two systems: Sparco use letters and OMP use the numeric ladder.

Overalls

Sparco MS-4 and MS-5, and the Proban suitLetters, XS to XXL.▼
Letter Equivalent 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

These are the bands from Sparco’s own body size chart, which is what their letters follow. The OMP Proban race suit is also sold S to XXL and uses the same pattern.

OMP Summer and Blast EvoNumeric, 44 to 64. The same ladder as OMP race suits.▼
Size Chest (cm) Waist (cm) Height (cm)
44 87 – 91 71 – 75 155 – 165
46 91 – 95 75 – 79 158 – 170
48 95 – 99 79 – 83 165 – 175
50 99 – 103 83 – 87 170 – 180
52 103 – 107 87 – 91 170 – 183
54 107 – 111 91 – 95 177 – 187
56 111 – 115 95 – 99 182 – 190
58 115 – 119 99 – 103 185 – 195
60 119 – 123 103 – 107 187 – 198
62 123 – 127 107 – 111 190 – 200
64 127 – 131 111 – 115 190 – 200
Mechanics overalls are meant to be roomierUnlike a race suit, you want room to crouch, reach and kneel in these all day. If you are between two sizes take the larger one, which is the opposite of the advice for a driving suit.

Gloves

Measure around your knuckles, across the widest part of the palm, leaving the thumb out.

Letter Numeric Sparco palm (cm) OMP palm (cm)
XS 8 20.5 – 21.5 20.8 – 21.5
S 9 21.5 – 22.5 21.6 – 22.3
M 10 22.5 – 23.5 22.4 – 23
L 11 23.5 – 24.5 23.1 – 23.7
XL 12 24.5 – 25 23.8 – 24.8
XXL 13 25 – 25.5 24.7 – 25.4

Sparco and OMP agree within half a centimetre throughout. A mechanics glove should be a little looser than a driving glove so you can get it on and off quickly with dirty hands, so if you are on a boundary take the larger.

Shoes

The Sparco Fast and Chrono mechanics shoes use the standard Sparco ladder. Measure heel to longest toe, standing, and work from the bigger foot.

EU UK Foot length
37 4 24.3 cm
38 5 25.0 cm
39 5.5 25.7 cm
40 6.5 26.3 cm
41 7 27.0 cm
42 8 27.7 cm
43 9 28.3 cm
44 9.5 29.0 cm
45 10.5 29.6 cm
46 11 30.3 cm
47 12 31.0 cm
48 13 31.6 cm

The Alpinestars Radar V2 mechanics shoe uses the Alpinestars ladder instead, which carries half sizes Sparco does not: UK 7 is an EU 40.5, UK 9.5 is an EU 43.5 and UK 11 is an EU 45.5. Go by the UK size on that one. It also runs up to UK 14.

Shorts

The Sparco Bermuda cargo shorts run S to XXL on the same letter bands as the overalls above, sized on your waist rather than your chest.

A note on approvals

Some of this category is FIA 8856-2018 approved and some is not. The Sparco Tide Meca and R-Meca gloves, the OMP Pro Mech gloves and the Sparco Fast and Chrono shoes carry the driver-standard approval, which matters if you are working on a refuelling stop. The Workshop EVO gloves, the cargo shorts and the MS-4 and MS-5 overalls are workshop kit. The approval is listed on every product page.

Kitting out a team?Send us the sizes and we will sort the mix. We can usually do better on a full crew order than on the individual pieces. Call 0115 989 3488 or email Sales@GSMPerformance.co.uk.

Sparco bands from sparco-official.com. OMP numeric ladder from their published suit chart. Glove and shoe ladders as verified for our racing glove and racing boot size guides. All checked 2 August 2026.

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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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