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How To Choose The Right Brembo Big Brake Kit
Brembo’s GT range is the brand most people mean when they say big brake kit. On our site it covers 4, 6 and 8 piston calipers across disc sizes from 328mm up to 405mm, built to order for a specific car rather than sold as a generic kit. Pot count, disc size and disc construction are what actually decide the kit, not the Brembo badge on the box.
- BigBrakes4u's Brembo range runs from 4 pot kits at 328mm up to 8 pot kits at 380mm and above
- Every Brembo kit on our site carries the same clearance caveat: tell us your wheels before you order
- Brembo GT discs come in one piece and two piece versions, we stock both
- Prices below are live BigBrakes4u prices, checked 6 September 2026
The Brembo GT range at a glance
Piston count is the first split. 4 pot kits sit at the entry point of the range, mostly around 328mm, and cover fast road cars and hot hatches well. 6 pot kits step up to 355 and 365mm and suit cars that see regular track use or carry more weight. 8 pot kits run 380mm and up, and on our site that’s mostly larger SUVs and performance saloons, Range Rover, Cayenne and similar, where the extra pistons are clamping a heavier car rather than chasing lap time.
| Kit | Pistons | Disc size | Price (inc VAT) |
|---|---|---|---|
| VW Golf GTI Mk VI front | 4 | 328mm | £3,173.89 |
| VW Golf R32 Mk4 front | 6 | 355mm | £4,271.40 |
| Range Rover front | 8 | 380mm | £4,255.90 |
Prices correct on 6 September 2026
Disc size and wheel clearance
Every Brembo listing on our site carries the same line for a reason: tell us your wheels and we’ll confirm clearance before you order. A 380mm 8 pot kit needs real room inside the wheel, both for the disc and for a caliper body that’s noticeably bigger than a 4 pot. Don’t work from a generic minimum wheel size, spoke design varies enough between makes that two 18 inch wheels can give completely different clearance.
Send us the make, model and a photo of the wheel face on before you order. It’s a five minute check that avoids a kit arriving and not fitting.
One piece vs two piece discs
Brembo GT discs come in one piece and two piece construction, and we stock both. A one piece disc is cast as a single unit, it’s the cheaper and simpler option and it’s what most standard replacement rotors are. A two piece disc bolts a separate iron disc ring to an aluminium centre bell, which cuts unsprung and rotating weight and lets the disc float slightly as it heats up, reducing warping. Two piece is the better engineering answer for hard use, but you’re paying for that aluminium bell, and when the disc face wears out on a two piece setup you can usually replace just the ring instead of the whole assembly.
For most road cars the one piece disc is money better spent elsewhere. Two piece earns its keep on cars doing serious track mileage or heavier applications where unsprung weight actually matters.
Pad choice: road vs track
The caliper and disc get you the mechanical advantage, the pad compound decides how the car actually stops day to day. A track compound on a car that’s mostly on the road gives you a cold, grabby pedal every morning and more dust than you’ll want to clean off the wheels. Get the compound wrong the other way, road pads on a car doing regular track days, and you’ll find the fade point earlier than the kit’s actual capability. Read our full breakdown before you choose: Brake Pad Compounds Explained.
Common questions
What's the difference between a Brembo 4 pot and 6 pot kit?
Piston count and disc size mostly. 6 pot kits run bigger discs, 355 to 365mm on our range, and suit cars doing track days or carrying more weight than a 4 pot setup is built for.
Should I get a one piece or two piece Brembo disc?
One piece is cheaper and fine for most road cars. Two piece cuts unsprung weight and copes better with heat, worth it if the car sees regular track use.
Will an 8 pot Brembo kit fit under my wheels?
Depends on the wheel. Send us the make, model and a photo and we'll confirm before you order.
Are Brembo kits made to order?
Yes, every Brembo conversion kit we list is built to order for the specific car.
Which pad should I run on a Brembo kit?
Depends on how the car's used. Read Brake Pad Compounds Explained or call 0115 9893488 and we'll recommend one.
What we would actually fit
For a fast road car, a 4 pot Brembo kit with a one piece disc is plenty, and it’s the cheapest way into the range. Step up to 6 pot only if the car’s doing regular track days or carrying real weight, and pair it with a two piece disc if unsprung weight and warping actually matter for how you use the car. 8 pot kits are for heavier vehicles, not for chasing a number. Whatever you’re looking at, call 0115 9893488 before you order, Garreth can confirm the wheel clearance and the right disc construction for your car in five minutes.