Track day helmets are sized model by model, and every size option on the site carries the head measurement inside the name. Measure once, then pick the option whose centimetre range contains your number. The letter on its own will mislead you.
Read the number, not the letterA Sparco track day L is a 60 cm head on the X-Pro, a 58 to 59 cm head on the Gulf and Martini X-Pro, and a 60 to 61 cm head on the Club X1. Same brand, same letter, three different heads.
Measure the head
1One inch above the eyebrowsThen round the widest part at the back. Soft tape, level all the way round.
2Take the largest readingMeasure three or four times and use the biggest number.
3Hair as you driveDown or tied as it will be under the helmet.
Your size in the main ranges
A dash means that range has no size at that measurement. The Sparco X-Pro and J-Pro both skip 59 cm, so if you measure 59 you are choosing between an M that may be tight and an L that may be loose. Ring us on that one, or look at the Gulf and Martini X-Pro or the Club X1, which both cover it.
Every model
What ECE means for you
Everything in this category is homologated to ECE 22-06 or the older ECE 22.05, which is the European road motorcycle standard rather than a motorsport one. That is what makes these helmets good value for track days, sprints and open pit lane sessions, and it is why they cover a wider size range and cost less than an FIA helmet.
It also means most circuit championships will not accept them, because those require an FIA 8859 or 8860 helmet, or a Snell SA. If you are moving from track days into competition, check your regulations before you buy, and have a look at our motorsport helmet range instead. If you are not sure which side of that line you are on, ring us and we will tell you straight.
Open face or full face
An open face sits differently because there is no chin bar pulling the shell forward, and it is built on a separate set of shells, so do not assume your full face size carries across. The open face options here also suit a road car with a roll cage where getting a full face on and off through a cage bar is awkward.
How it should fit
Snug enough that it is slightly awkward to pull on, with the cheek pads pushing your cheeks up. With the strap done up you should not be able to rotate the helmet forwards off your head. The lining beds in over the first few sessions, so a helmet that is merely comfortable out of the box will be loose by the end of the season.
Tell us what you are doing with itHead circumference in centimetres and whether it is track days, sprints or a championship. The homologation narrows the choice more than the size does. Call 0115 989 3488 or email Sales@GSMPerformance.co.uk.
Ladders read from the size options on our own products, which carry the head measurement in the size name. All checked 2 August 2026.
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