Performance big brakes
Providing you with the most definitive range of performance big brake kits. We’re proud to bring you out specialist website, ‘BigBrakes4u‘. Lets find the right setup for you, today.
Click for big brake conversions
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What our customers say
With some assistance from GSM Performance they helped me pick out a Mirco RTS seat, and guided me through how to get the exact colour pattern I wanted. The seat arrived today well within the advised lead time.
I would 100% reccomend you use this company for your seating needs.
I would 100% reccomend you use this company for your seating needs.
Tom Coombs
6/25/2020
Brilliant correspondence from GSM. Very informative very professional... Such a shame Parcelforce let me down! Purchase made it to my county all the way from the USA .. Parcelforce lost it. Absolutely nothing to do with GSM. HIGHLY RECOMMENDED THEM!
Martin Maddog
4/13/2022
Purchased some side mount seat rails for my car. Best looking quality and price I could find anywhere.
Although they haven't arrived yet I don't doubt they'll be perfect. I got a brill email too, great customer service!
Although they haven't arrived yet I don't doubt they'll be perfect. I got a brill email too, great customer service!
George Reed
7/31/2017