Sparco One Mechanics Suit

From £186.00 Incl. VATFrom £155.00 Excl. VAT

Motorsport equipment chosen by people who use it, not just sell it. Ask us anything before you order: the showroom team know this kit inside out.

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Suit Size

XXL

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Size/Fitting guide

SKU: N/A Category: Karting Suits

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Approval:

None

Key Features:

Not FIA Homologated
Single-layer construction
Lighter and more comfortable than the previous version
For drivers in national-level or historic races, mechanics, technicians or race officials

Additional information

Brand	Alpinestars
Colour	Black, Black & Red, Black & Blue
Suit Size	XS, S, M, L, XL, XXL
Product Type	Mechanic

Karting suit size guide

Kart suits are sold three different ways on the same page. Some are on the numeric ladder, the same one that brand uses for its car suits. Some are on letters. The junior suits are sized on the child’s height in centimetres. Work out which one you are looking at first and the rest is straightforward.

System	Which suits	What it means
Numeric, 40 to 62	Sparco Superleggera-K and Prime-K, OMP KS-2X and KS-3X, Alpinestars KMX-5 and KMX-9	Same ladder as that brand’s car suits
Letters, XXS to XXXL	Sparco Thunder, Kerb and Rookie, OMP KS-4 and Summer-K, Alpinestars Indoor	Two numeric sizes per letter
Junior, 120 to 150 cm	OMP Summer-K Junior	Sized on the child’s height, not age

Measure these three

AChestAround the fullest part, under the armpits, tape horizontal.

BWaistAround your natural waist, level with the navel.

CHeightAgainst a wall, no shoes. This is what sizes a junior suit.

Measure over the kart underwear you will actually wear. A long sleeve top and long johns take up more room than a t-shirt, and a kart suit is cut closer than a car suit to start with.

Numeric sizes

These are the same ladders each brand uses for its car suits, so if you already own a race suit in one of these brands you know your number.

SparcoSuperleggera-K and Prime-K Advanced, 44 to 62.▼

Size	Chest (cm)	Waist (cm)	Height (cm)
44	86 – 89	74 – 77	164 – 167
46	90 – 93	78 – 81	167 – 170
48	94 – 97	82 – 85	170 – 173
50	98 – 101	86 – 87	173 – 176
52	102 – 105	88 – 93	176 – 179
54	106 – 109	94 – 97	179 – 182
56	110 – 113	98 – 101	182 – 185
58	114 – 117	102 – 105	185 – 188
60	118 – 121	106 – 109	188 – 191
62	122 – 125	110 – 113	191 – 194

OMPKS-2X and KS-3X, 42 to 62. The widest kart range we carry.▼

Size	Chest (cm)	Waist (cm)	Height (cm)
42	83 – 87	67 – 71	150 – 160
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

AlpinestarsKMX-5 V3 and KMX-9 V3, 40 to 60. Cut for a taller driver than Sparco at the same chest.▼

Size	Chest (cm)	Waist (cm)	Height (cm)
40	78 – 82	64 – 68	150 – 156
42	82 – 86	68 – 72	156 – 163
44	86 – 90	72 – 76	163 – 167
46	90 – 94	76 – 80	167 – 171
48	94 – 98	80 – 84	171 – 175
50	98 – 102	84 – 88	175 – 179
52	102 – 106	88 – 92	179 – 183
54	106 – 110	92 – 96	183 – 187
56	110 – 114	96 – 100	187 – 191
58	114 – 118	100 – 104	191 – 195
60	118 – 122	104 – 108	191 – 195

From size 46 upwards Alpinestars add roughly a centimetre of height per size step over Sparco on almost identical chest measurements. If you are short and broad, or tall and slim, that is worth knowing before you order.

Letter sizes

Where a suit is sold in letters, each letter covers two numeric sizes. This is Sparco’s own grouping and OMP and Alpinestars follow the same pattern.

Letter	Numeric	Chest (cm)
XS	44 / 46	86 – 93
S	48 / 50	94 – 101
M	52 / 54	102 – 109
L	56 / 58	110 – 117
XL	60 / 62	118 – 125
XXL	64 / 66	126 – 133

The Sparco Kerb Advanced Lady runs XXS to L and is cut on the women’s block, not this one. Send us your bust, waist and height for that and we will size it properly rather than convert from a men’s chart.

Junior suits

The OMP Summer-K Junior is sized 120, 130, 140 and 150, and those numbers are the child’s height in centimetres, not their age. Ages are a rough guide only. Measure them.

Size	Typical age	Height (cm)	Chest (cm)	Waist (cm)
120 cm	6 to 7	116 – 125	60 – 63	55 – 60
130 cm	8 to 9	126 – 135	64 – 67	61 – 63
140 cm	10 to 11	136 – 145	68 – 71	64 – 67
150 cm	12 to 13	148 – 155	72 – 75	68 – 71

Body measurements from Sparco’s published youth chart, which uses the same 120 to 150 ladder. Use them as a cross-check on the height.

Do not buy a junior suit to grow intoA suit that is too long in the arm bunches at the wrist and catches on the wheel, and one that is loose across the shoulders drags every time they turn in. Size it to the measurement now. If they are right on a boundary, take the larger and turn the cuffs once.

Standards, and what they mean for choice

FIA 8877-2022 is the current kart clothing standard and Grade 1 is the higher of its two levels. It replaced the old CIK-FIA Level 2, which you will still see on older stock. Suits marked Non-CIK or Non-FIA are the rain suits, over-suits and indoor karting suits, which are not competition wear. All three appear in this category, so check the approval on the product before you buy if you are running in a championship.

What else changes the fit

Rain gear goes over the top

The OMP Rain-K and Sparco T-1 Evo wetsuit are over-suits, worn on top of everything else. Size those to go over your kart suit rather than to your own measurements, which usually means one size up.

Kart suits sit closer than car suits

There is no seat holding you in place, so a kart suit is cut to move with you rather than to sit over a harness. If you are used to a race suit it will feel tighter across the shoulders at the same nominal size, and that is correct.

Between two sizes, or buying for a child?Send chest, waist and height and tell us which suit you are looking at. Junior sizing in particular is worth a two minute conversation. Call 0115 989 3488 or email Sales@GSMPerformance.co.uk.

Numeric ladders are the manufacturers’ own published charts, the same ones used in our racing suit size guide. Sparco from sparco-official.com, OMP from their product size chart, Alpinestars from their size guide. Youth measurements from Sparco’s published youth chart. All checked 2 August 2026.

What size should I order?
Sizes run from XS to XXL. Kart suits are cut for a seated driving position, so go by chest and height rather than your usual clothing size, and allow room to move freely. Between sizes, take the larger one. Send us your measurements if you want us to confirm before you order.

Is it legal for competition karting?
This suit is not homologated for competition karting, which makes it the right price for practice, corporate events, and rental driving, but not for club or championship racing. If you race, look at the FIA 8877-2022 items in the range.

Can I wear a kart suit for car racing?
No. Kart suits are built for abrasion protection, not fire protection, so they are never accepted for car racing, where FIA 8856 fire-resistant suits are required. The reverse also matters: a car race suit is not designed to slide down tarmac. Keep each to its own discipline, and see our race suit guide if you need the car side.

How do I wash it?
Kart suits are more forgiving than fireproof race suits: a cool machine wash on gentle, no bleach or softener, and air dry. Close all zips and Velcro first, or they chew the fabric of everything else in the drum.

Availability

Alpinestars comes from central distribution

All Alpinestars goes through central distribution. Stocked items take around 10 working days.

Special order items

Items we do not hold extend to around 20 days.

Before you order

Give us the item and the size you want and we will tell you which position it is in before you buy.

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