Our Top Recommended Big Brake Upgrade Kits For Your Honda NSX
Every other car in this series is front engined, and that quietly shapes all the usual advice. Weight piles onto the nose under braking, the front discs do almost all the work, and the answer is nearly always the biggest front kit your wheels will take. The NSX is the exception. The engine sits behind you, the car is aluminium and light, and it puts a smaller share of its braking through the front axle than anything else we have written about here.
That does not mean it needs less brake. It means the front kit is a smaller part of the whole picture, and that consistency over a session matters more than raw one stop power. Everything below comes from the two brands we stock for big brakes, Tarox in northern Italy and HiSpec Motorsport in Dartford. The full NSX range is on the site if you want to browse it raw.
- Mid engined and aluminium bodied, so the front axle carries less of the braking than a front engined car
- Five HiSpec kits and three Tarox kits are in stock, covering 16, 17 and 18 inch wheels
- The 360mm Monster 4 is fifteen pounds cheaper than the 335mm, so the bigger disc costs less
- Tarox arrive with braided hoses and Corsa pads fitted; HiSpec price theirs separately so you choose the compound
What being mid engined changes
On a front engined car, hard braking throws the weight forwards and the front discs end up doing something like three quarters of the work. That is why the standard advice in this series is to spend on the front axle first and worry about the rear later. On the NSX the engine is behind the cabin, the car is light, and the split between front and rear under braking is more even than that.
Two things follow. First, the front kit is still the right place to start, because it is still the end doing more of the work, but you will notice the rear running out sooner than you would on a saloon. Second, because there is less weight to stop and less of it piling onto the nose, you do not need to chase the largest disc on the page to get a good result. What you want on this car is consistency: a disc and pad combination that gives you the same pedal on lap eight as it did on lap two. That points at the middle of the range, not the top of it.
Two brands, two ways of building a brake kit
Both machine their own calipers from billet aluminium and build every kit for the specific car it is going on. Where they differ is what goes in the box and how it is priced.
Tarox
Built at the factory in northern Italy. Calipers are CNC machined from European billet alloy and hand assembled, discs are heat treated and hand balanced to 0.05mm. Three NSX kits are listed: 305mm and 310mm six pots that clear a 16 inch wheel, and the 340mm Super Sport at 18 inch. Every one arrives complete with vehicle specific braided hoses and Corsa pads already fitted, and Tarox state full compatibility with ABS and ESP.
HiSpec Motorsport
Machined in Dartford from 6082 T6 billet aluminium, calipers and pistons both. Five NSX kits across the Monster 4, Monster 6 and Mega Monster families at 335mm and 360mm. Made to order in up to 28 working days, calipers in black, red, blue, gold or silver. Pads and braided hoses are priced separately so you pick the compound to suit the car.
Wheel sizes: real numbers for every kit
Minimum wheel diameter is a property of the kit and not of the car: a disc is a disc and a caliper is a caliper, so a figure published against one car holds for every car that kit is listed against. The Tarox figures below were looked up from their own product pages for these exact kits. The only check that stays a conversation is depth, because a wheel of the right diameter can still foul a caliper at the spokes. Give Cameron the make and model of the wheel alongside the size and he will confirm before anything goes to build.
| Kit | Disc | Smallest wheel |
|---|---|---|
| Tarox 305mm 6 pot | 305mm | 16 inch |
| Tarox 310mm 6 pot | 310mm | 16 inch |
| HiSpec 335mm Monster 4 | 335mm | 17 inch |
| HiSpec 335mm Monster 6 | 335mm | 17 inch |
| HiSpec 360mm Monster 4 | 360mm | 18 inch |
| HiSpec 360mm Monster 6 | 360mm | 18 inch |
| HiSpec 360mm Mega Monster | 360mm | 18 inch |
| Tarox 340mm Super Sport | 340mm | 18 inch |
HiSpec Monster 4, 335mm and 360mm: the sensible starting point
The Monster caliper runs a longer pad and higher temperature seals than the Billet 4 below it in the HiSpec range, which is exactly the sort of upgrade that suits this car: not more outright size, but more consistency as heat goes in. Both sizes are here, and the pricing is worth a second look. The 360mm is £1,635.00 and the 335mm is £1,650.00, so the bigger disc is the cheaper kit by fifteen pounds.
We are not going to point you at the smaller one at the higher price. If your wheels are 18 inch, take the 360mm and keep the fifteen pounds. The 335mm is the kit for a car on 17s, and that is the only reason to choose it.
- 360mm at £1,635.00, 335mm at £1,650.00, both inc VAT
- 360mm needs 18 inch wheels, 335mm clears 17 inch
- Four piston Monster caliper, longer pad than the Billet 4
- The bigger disc is the cheaper kit, so buy on wheel size
- Pads and braided hoses priced separately
Tarox 305mm 6 pot: the complete kit, and the one that clears 16s
If your NSX is still on its original wheels, this is the kit that fits, and it is the only route on this page to a complete boxed conversion at 16 inch. Six pistons, a two piece floating disc balanced to 0.05mm at the factory, and vehicle specific braided hoses and Corsa pads already fitted.
On a car this light, 305mm is not the compromise it sounds like. The NSX is not asking a brake to haul down two tonnes, and a six piston caliper on a floating disc gives you the pedal consistency that actually matters over a session. At £1,860.66 with everything in the box, it is a lot of kit for the money.
- £1,860.66 inc VAT, complete
- Fits behind 16 inch wheels
- Corsa pads and braided hoses included and fitted
- Six piston caliper, hand assembled in Italy
- 305mm two piece floating disc, balanced to 0.05mm
HiSpec Monster 6, 335mm and 360mm: the track pick
Six pistons instead of four, spreading the clamping load over a longer pad and keeping the pressure more even across it as the pad wears. This is the range Garreth would put a track day NSX on: 335mm at £1,773.00 for a car on 17s, 360mm at £1,863.00 for a car on 18s.
It is also, for this car, the point where we would stop. The Mega Monster above it is a bigger caliper aimed at heavier cars, and on an aluminium mid engined coupe the Monster 6 is already more brake than the front axle is being asked for. Spend the difference on a proper pad compound and fresh fluid.
- 335mm at £1,773.00, 360mm at £1,863.00, both inc VAT
- 335mm clears 17 inch, 360mm needs 18 inch
- Six piston Monster caliper, longer pad than the Monster 4
- Pads and braided hoses priced separately, so pick a track compound
- Five caliper colours, made to order in the UK, up to 28 working days
The two flagships: Mega Monster and Tarox Super Sport
For completeness, the top of both ranges. HiSpec’s 360mm Mega Monster is £2,196.85 and needs an 18 inch wheel. Tarox’s 340mm Super Sport is £2,610.00, also 18 inch, and arrives complete with pads and hoses fitted. The Super Sport caliper uses sequentially sized pistons so the pad wears evenly and the pedal stays consistent as heat builds.
One note on the Tarox listing, because we would sooner say it than have you counting pistons when it arrives. The title says 10pot. That was the older caliper design. The current B34GT runs eight sequential pistons and eight is what turns up. Both of these are more brake than a road going NSX needs, and both are the right answer if the car is doing serious circuit miles or you simply want the best on the page.
- HiSpec 360mm Mega Monster at £2,196.85 inc VAT
- Tarox 340mm Super Sport at £2,610.00 inc VAT, complete
- Both need 18 inch wheels
- Tarox includes Corsa pads and braided hoses; HiSpec prices them separately
- The Tarox runs 8 sequential pistons despite the 10pot in the title
The Tarox 310mm question
There is a third Tarox kit for the NSX and it deserves an explanation rather than a quiet listing. The 310mm six pot is £2,094.00 against £1,860.66 for the 305mm. That is £233.34 more for five millimetres of disc, and both clear the same 16 inch wheel.
If you have a specific reason to want the 310mm, it is there and we will happily supply it. If you are choosing between the two on paper, the 305mm is the better buy by a wide margin and we would say so on the phone as readily as we are saying it here.
What is actually in each box
The headline gap between HiSpec and Tarox closes once both are specced to the same level. HiSpec price their kits without pads or braided hoses, so you add those separately and choose the compound. Tarox include both, with the pads already fitted. Compare the finished builds, not the entry prices.
| In the box | HiSpec | Tarox |
|---|---|---|
| Calipers | Monster 4, Monster 6 or Mega Monster, 6082 T6 billet aluminium | Six piston, or eight sequential on the Super Sport |
| Discs | Sized to the kit, 335mm or 360mm | Two piece floating, balanced to 0.05mm |
| Brackets and hardware | Included | Included |
| Braided hoses | Priced separately | Included |
| Pads | Priced separately, your choice of compound | Corsa pads, fitted |
| Caliper finish | Black, red, blue, gold or silver | Black, red, blue, green or gold anodised |
| Built in | Dartford, UK, up to 28 working days | Northern Italy |
Every kit on this page compared
| Kit | Disc | Caliper | Smallest wheel | Pads and hoses | Price inc VAT |
|---|---|---|---|---|---|
| HiSpec Monster 4 | 360mm | 4 piston | 18in | Extra | £1,635.00 |
| HiSpec Monster 4 | 335mm | 4 piston | 17in | Extra | £1,650.00 |
| HiSpec Monster 6 | 335mm | 6 piston | 17in | Extra | £1,773.00 |
| Tarox 305 6 pot | 305mm, 2P | 6 piston | 16in | Included | £1,860.66 |
| HiSpec Monster 6 | 360mm | 6 piston | 18in | Extra | £1,863.00 |
| Tarox 310 6 pot | 310mm, 2P | 6 piston | 16in | Included | £2,094.00 |
| HiSpec Mega Monster | 360mm | Mega Monster | 18in | Extra | £2,196.85 |
| Tarox 340 Super Sport | 340mm, 2P | 8 piston | 18in | Included | £2,610.00 |
Prices include VAT and were correct on 22 August 2026. Tarox minimum wheel sizes were looked up from their own product pages per kit. The table is sorted by price, which is why the 360mm Monster 4 sits above the 335mm.
Common questions
Does a mid engined car need a smaller front brake kit?
Not smaller, but you do not need to chase the biggest one on the page either. Because the engine sits behind you, less weight transfers onto the front axle under braking than it would on a front engined car, so the front discs are doing a smaller share of the total work. The NSX is also light. What matters more on this car is consistency lap after lap, which comes from a good caliper and the right pad compound more than from the last 25mm of disc diameter.
Why is the 360mm Monster 4 cheaper than the 335mm?
We do not have a tidy answer, and we would sooner show you the prices than hide them. Both were checked against our live pricing on 22 August 2026. Where the bigger kit is cheaper and your wheels will clear it, buy the bigger kit. The 335mm exists for cars on 17 inch wheels, and that is the only reason to choose it.
Is the Tarox 310mm worth the extra over the 305mm?
On paper, no. It is £233.34 more for five millimetres of disc and both clear the same 16 inch wheel. If you have a specific reason to want it we will supply it happily, but if you are choosing between the two on the numbers alone, the 305mm is the better buy and we would tell you the same on the phone.
Why are pads and hoses extra on the HiSpec kits?
HiSpec price the hardware bare so you choose the compound to match how the car is used: a softer road pad for a daily driver, something more aggressive for track evenings. Both pads and braided hoses can be added at the same time. We will quote the finished build level so you can compare it properly against the Tarox kits, which include both as standard.
How long before it arrives?
HiSpec kits are made to order in Dartford, so allow up to 28 working days. Tarox kits are built for the specific car at the factory in Italy and lead times vary through the year, so ask when you place the order and we will give you the current picture. Neither brand keeps finished NSX kits on a shelf.
What we would actually fit
On an NSX still on its original 16 inch wheels, the Tarox 305mm at £1,860.66, complete in one box and genuinely enough brake for a car this light. On 17s, the 335mm Monster 6 at £1,773.00. On 18s, the 360mm Monster 4 at £1,635.00 if you want the value pick, or the 360mm Monster 6 at £1,863.00 if the car sees the circuit regularly. That middle pair is where Garreth would spend on this car, and he would put the difference towards a proper pad compound instead of a bigger caliper.
The Mega Monster and the Tarox Super Sport are both there if you want the top of the range, and neither is a bad buy, they are simply more than a light mid engined coupe is asking for. Ring us on 0115 9893488 with your wheel size and what the car does at weekends, and tell us what the rear is running while you are at it. Working out what clears and what fouls is Cameron’s corner of the business, so have the wheel make and model handy and you will get a straight answer.