Is it time to replace your race suit? Let’s get you track-ready. Talk to someone who wears this kit
Helmet and suit sizing, what your championship will accept, whether a HANS device suits the seat you already have, and where a piece of kit is up to. Ring, message, email or come in and try things on. Garreth and Cameron have been at this since 2003.
Which route suits what
All four reach the same two people. Some are just faster for some jobs.
01Phone
Answered by CallyAI, our AI phone agent, which does more than take your name. It books showroom appointments, gives technical advice, takes messages and sends written quotations. No menu, no extension to ask for.
02WhatsApp
Same number, and the one to use when a photograph settles it. A picture of the label inside your existing helmet tells us whether it is still in date far quicker than you describing it.
03Email
Sales@GSMPerformance.co.uk. The right choice when there is an order number involved, when you want a written quotation, or when you are kitting out a team and sending a list.
04In the showroom
By appointment, Monday to Friday between 10.00am and 4.00pm. For helmets and suits this is genuinely the best option, because sizing charts only get you so far and a lid that is wrong is not returnable once worn.
Where we are and when we are open
Off the A46 in Nottinghamshire. Visits are by appointment, so book rather than turn up if you are travelling.
GSM Performance
Unit 5 and 6, High Hazles Road
Nottingham
NG12 3GZ
The showroom runs to 2,500 square feet and carries stock from across the group, so you can try a helmet, sit in a bucket seat and look at a brake kit on the same visit.
What to tell us so we can answer first time
None of it is compulsory. It just turns a three day conversation into one reply.
What you compete in
The championship, series or club, or that it is trackdays only. Regulations decide what standard of helmet, suit and head restraint you are allowed to wear, and they vary far more than people expect.
Your measurements
Head circumference for a helmet, measured a centimetre above the eyebrows at the widest point. Chest and height for a suit. Shoe size for boots, and be aware racing boots run narrow.
What you already own
Particularly the seat and the harness if you are asking about a HANS device, because the shoulder strap angle and the seat shoulder cut both decide whether a restraint sits properly.
A photograph of any label
If you are asking whether existing kit is still in date, a photograph of the homologation label answers it in seconds. WhatsApp is easiest for this.
Put your order number in the first line. It starts GSM on this site and SS4U on sportseats4u.co.uk, and it is on your confirmation email and your invoice. With the number we can see the warehouse, the courier and the tracking in one go instead of asking you three more questions first.
Send us a message
Pick the closest category and give us as much of the above as you can. Everything lands in the same inbox.
The form covers everything the group sells, not just racewear, so use it for seats and brakes too rather than hunting for the right website first.
Sizing is the one thing a message cannot settle. Book a showroom slot and try things on, or read what is on the floor first.
Book a fitting
Free, no obligation, and the fastest way to settle a sizing question. Pick a time that suits.
Common questions
What is the quickest way to get an answer?▾
Ring 0115 9893488. CallyAI answers and can settle most things on the call, including booking you a showroom slot or sending a written quotation. For anything where a photograph helps, WhatsApp on the same number is quicker still.
Who answers the phone?▾
CallyAI, our AI phone agent. It books showroom appointments, gives technical advice, takes messages and sends quotations. There is no menu and no extension to ask for, just say what you need.
Can you help me size a helmet or a suit over the phone?▾
Up to a point, and we will always try. But sizing is the one thing genuinely better done in person, because two lids with the same stated size fit completely differently. If you can get to the showroom, half an hour there beats any amount of messaging.
I need an update on an existing order.▾
Have your order number ready. It starts GSM on this site and SS4U on sportseats4u.co.uk. With the number we can see the warehouse, the courier and where a made to order item has got to.
Do you answer at weekends?▾
The showroom is Monday to Friday, 10.00am to 4.00pm. Messages sent at the weekend are picked up on the next working day, so send them rather than waiting until Monday.
Can I book a fitting session?▾
Yes. For helmets and suits, trying the size in person settles questions a chart cannot. Book a slot on the calendar further down this page, or ring us. It is free and there is no obligation to buy anything on the day.
Do you deal with teams, clubs and corporate work?▾
Yes. Race teams, karting clubs, corporate branding, boat and marine seating and stadium projects all come through the same form. Pick the closest category and describe the job and we will come back with a proper quotation.
Where do I send a return?▾
Speak to us before posting anything back. Read the returns and exchanges page first, then contact us for a returns form and the address. Parcels sent back without a form take much longer to process.
Find us on social media
Customer cars, new stock and whatever has just come off the van.
Tell us what you race and we will tell you what fits
No charge for advice and no obligation to buy. If your regulations rule something out, we will say so before you spend the money rather than after.
Call 0115 9893488Book the showroomEmail us