Our Top Recommended Big Brake Upgrade Kits For Your Nissan 300ZX
The 300ZX ran through two very different-looking generations, naturally aspirated and twin turbo engines, and both a 2-seat and a 2+2 body. None of that shows up in the brake kit listings. Every one of the eleven Tarox and HiSpec kits on this page is sold as a single, universal front conversion for “the Nissan 300ZX”, with no split by generation, engine or body. That is unusual on this site: several of our other guides fork by generation because the kits genuinely differ from one version of the car to the next. Here they do not, so the decision comes down to wheel size, caliper family and budget instead.
Coverage on this car is thinner than most of our other guides: three Tarox kits against eight HiSpec kits, all sharing the same range of disc sizes from 300mm up to 340mm. That is enough to build a proper ladder from an entry kit on standard wheels through to a genuine track caliper, and we have laddered the five picks below by wheel size, not by brand. The full 300ZX range is on the site if you want to see everything at once.
- Every kit here converts the front axle only: calipers, two piece discs, brackets and fitting hardware for the Nissan 300ZX
- No generation, engine or body split on this page. One listing per kit fits the range
- Disc sizes run from 300mm to 340mm, and the wheel size needed runs from 16 inch to 18 inch
- Tarox kits arrive with Corsa pads and braided hoses already fitted; most HiSpec kits here include an EBC pad too, worth checking kit by kit
- Coverage is three Tarox kits against eight HiSpec, so this page leans HiSpec more than some of our other guides
Two brands, two ways of building a brake kit
Both companies machine their own calipers from billet aluminium and build each kit for the specific car. The difference comes down to what is in the box and where the work is done.
Tarox
Made at the Tarox factory in northern Italy. Calipers CNC machined from European billet alloy and hand assembled, each one tested before dispatch. Every disc is heat treated, CNC faced and hand balanced to 0.05mm. Every 300ZX kit arrives with Corsa pads pre-installed and vehicle-specific braided hoses in the box. Full ABS and ESP compatibility stated on all three kits.
HiSpec Motorsport
Machined in Dartford from billet aluminium, calipers and pistons both, each one CNC machined from aerospace grade billet for a rigid caliper with almost no flex. Every 300ZX kit we checked includes an EBC pad as standard (marked upgradeable, so you can move to a different compound later). Braided hoses come with the Monster 4 and Monster 6 kits; on the Billet 4 and Mega Monster they are listed as optional.
One external link worth bookmarking for Tarox: their wheel clearance template is the definitive check for spoke depth once you have the minimum diameter sorted.
The number that decides it: your wheel size
Disc diameter sets the minimum wheel, and on the 300ZX the range runs from 16 inch at the entry kit to 18 inch at the top. The HiSpec figures come straight from their own catalogue statements against each disc size. The Tarox figures were looked up individually on tarox.co.uk for each kit’s own product page, because Tarox publish a genuine per-kit minimum instead of a figure that follows disc size alone.
| Kit | Disc | Smallest wheel |
|---|---|---|
| HiSpec 300mm Billet 4 | 300mm | 16 inch |
| Tarox 310mm Sport | 310 x 30mm | 16 inch |
| HiSpec 325mm Monster 4 | 325mm | 17 inch |
| HiSpec 325mm Monster 6 | 325mm | 17 inch |
| HiSpec 335mm Monster 4 | 335mm | 17 inch |
| Tarox 330mm Sport | 330 x 26mm | 17 inch |
| HiSpec 360mm Monster 6 | 360mm | 18 inch |
| HiSpec 360mm Mega Monster | 360mm | 18 inch |
| Tarox 340mm Super Sport | 340 x 32mm | 18 inch |
HiSpec 300mm Billet 4: the entry kit at 16 inch
If the car is on 16 inch wheels and you want to keep them, this is the pick. The Billet 4 is HiSpec’s most popular caliper: four pistons machined from billet aluminium with integral dust seals to keep road grit out. On a 300mm two piece floating disc it is a genuine step over the standard setup and clears a 16 inch wheel.
The kit includes an EBC Standard Road Pad as standard, marked upgradeable, so it arrives ready to bolt on without a separate pad order. Braided hoses are listed as optional on this kit, so tell us if you want them included when you order.
- £1,464.00 inc VAT
- Clears 16 inch wheels
- 300mm two piece floating disc
- EBC Standard Road Pad included, upgradeable; braided hoses optional
- Three caliper colours
HiSpec 325mm Monster 4 and Monster 6: the 17 inch move
Once the car is on 17 inch wheels the Monster caliper comes in. It uses a pad a third bigger than the Billet 4, built for medium to heavy cars or ones carrying serious power. Both the Monster 4 and Monster 6 sit on the same 325mm two piece disc and clear a 17 inch wheel; the difference between them is piston count and clamping force.
Both kits here include an EBC Redstuff pad as standard and braided hoses in the box, so unlike the Billet 4 entry kit there is nothing extra to add before it is a complete build. For most road-driven 300ZXs on 17s, the Monster 4 does the job. The Monster 6 is for a car that sees track use or carries more power than standard.
- Monster 4 at £1,596.00 inc VAT; Monster 6 at £1,683.00 inc VAT
- Both clear 17 inch wheels
- 325mm two piece floating discs
- EBC Redstuff pads and braided hoses included on both
- Five caliper colours
Tarox 310mm Sport: the complete kit at 16 inches
The entry Tarox for the 300ZX, and the easiest buy on this page if you want the whole job in one delivery. Six piston caliper on a 310mm two piece disc balanced to 0.05mm, Corsa pads already in the calipers and braided hoses in the box. Clears 16 inch wheels, the same as the HiSpec Billet 4.
Tarox list this as one single listing for the 300ZX, not split by engine, so there is no fitment question to work through before ordering. Full ABS and ESP compatibility is stated on the kit.
- £2,094.00 inc VAT, complete with pads and braided hoses fitted
- Clears 16 inch wheels
- 310mm two piece disc, balanced to 0.05mm
- Six piston billet caliper, hand assembled in Italy
- One listing covers the whole 300ZX range
HiSpec 360mm Monster 6: the 18 inch track pick
The biggest Monster caliper listed for the 300ZX. Six pistons on a 360mm two piece disc, the same Monster 6 caliper as the 325mm kit but stepped up to the largest disc HiSpec publish this caliper against for this car. It clears an 18 inch wheel.
This is the kit Cameron points people at when the 300ZX sees regular track days, not just the odd trackday. The extra disc size over the 325mm and 335mm Monster kits buys more leverage and better heat dissipation, and the kit still includes the EBC Redstuff pad and braided hoses as standard.
- £1,863.00 inc VAT
- Clears 18 inch wheels
- 360mm two piece floating disc
- EBC Redstuff pad and braided hoses included
- Five caliper colours
Tarox 340mm Super Sport: the flagship, and a title worth double-checking
The biggest Tarox kit for the 300ZX and the most complete package on this page. Two piece disc balanced to 0.05mm at 340mm, Corsa pads fitted at the factory and braided hoses in the box. Clears an 18 inch wheel.
Our own listing title calls this a “10pot” kit. It is not: Tarox’s own spec and our product description both state an 8-piston caliper, part code B34GT/B360, with sequential piston sizing for even pad contact. We are flagging the title for correction and are not repeating it in our own copy. Whichever number is on the page, the caliper is the 8-piston Super Sport, and it is the kit we would put on a 300ZX built for fast road and track use.
- £2,610.00 inc VAT, complete with pads and braided hoses fitted
- Clears 18 inch wheels
- 340mm two piece disc, balanced to 0.05mm
- 8-piston billet caliper (B34GT/B360), hand assembled in Italy
- Sequential piston sizing for even pad contact
More options at 17 and 18 inches
Three more kits sit between the picks above and are worth knowing about. The HiSpec 335mm Monster 4 is a cheaper alternative to the 325mm Monster 6 at the same 17 inch wheel size, for a car that wants more disc without moving to the six piston caliper. The Tarox 330mm Sport is the middle Tarox disc size, still all-in-one with pads and hoses fitted, and also needs 17 inch clearance. The HiSpec 360mm Mega Monster is HiSpec’s flagship caliper for this car, a six piston design with a bigger pad than the Monster 6, and it is the most expensive HiSpec kit on the page.
What is actually in each box
On a lot of our other guides HiSpec leave pads and hoses off so you choose the compound, and Tarox include both as standard. On the 300ZX listings that rule only half holds. Every HiSpec kit here already includes an EBC pad, marked upgradeable, not left out. Braided hoses come with the Monster 4 and Monster 6 kits as standard; on the Billet 4 and the Mega Monster they are listed as optional. Tarox includes both, pre-fitted, on all three of their kits, as they do everywhere else.
| In the box | HiSpec | Tarox |
|---|---|---|
| Calipers | Billet 4, Monster 4/6 or Mega Monster, billet aluminium | Sport 6pot or Super Sport 8pot, billet alloy, hand assembled in Italy |
| Discs | Two piece floating, with mounting bells | Two piece floating, balanced to 0.05mm |
| Brackets and hardware | Included | Included |
| Pads | EBC pad included, upgradeable | Corsa pads, fitted |
| Braided hoses | Included on Monster kits; optional on Billet 4 and Mega Monster | Included |
| Caliper finish | Black, red, blue, gold or silver | Black, red, blue, green or gold anodised |
| Built in | Dartford, UK | Northern Italy |
Every kit on this page compared
| Kit | Disc | Caliper | Smallest wheel | Pads and hoses | Price inc VAT |
|---|---|---|---|---|---|
| HiSpec 300mm Billet 4 | 300mm | 4 piston | 16in | Pad included, hoses extra | £1,464.00 |
| Tarox 310mm Sport | 310 x 30mm | 6 piston | 16in | Included | £2,094.00 |
| HiSpec 325mm Monster 4 | 325mm | 4 piston | 17in | Included | £1,596.00 |
| HiSpec 325mm Monster 6 | 325mm | 6 piston | 17in | Included | £1,683.00 |
| HiSpec 335mm Monster 4 | 335mm | 4 piston | 17in | Included | £1,650.00 |
| Tarox 330mm Sport | 330 x 26mm | 6 piston | 17in | Included | £2,280.00 |
| HiSpec 360mm Monster 6 | 360mm | 6 piston | 18in | Included | £1,863.00 |
| HiSpec 360mm Mega Monster | 360mm | 6 piston | 18in | Pad included, hoses extra | £2,196.85 |
| Tarox 340mm Super Sport | 340 x 32mm | 8 piston | 18in | Included | £2,610.00 |
Prices include VAT and were correct on 16 August 2026. The Tarox 340mm kit is listed on our site under the title “10pot”; the caliper is the 8-piston B34GT/B360, per Tarox’s own spec and our product description.
Common questions
Does the kit differ between the older 300ZX and the later Z32 shape?
Not on this page. Neither Tarox nor HiSpec split their 300ZX kits by generation, engine or body style, so every kit here is listed as one universal front conversion. If you are unsure whether a specific detail of your car changes anything, ring us on 0115 9893488 and we will check before you order.
Why does the Tarox 340mm kit say "10pot" when the spec says 8-piston?
That is a mistake in the product title on our site. The kit contents and Tarox's own published spec both describe an 8-piston caliper, part code B34GT/B360, with sequential piston sizing. The caliper itself has not changed, only the number in the title is wrong, and we have flagged it for correction.
Do the HiSpec kits on this page include pads and hoses?
Every HiSpec kit we checked for the 300ZX includes an EBC pad as standard, marked upgradeable so you can move to a different compound later. Braided hoses come included on the Monster 4 and Monster 6 kits. On the entry Billet 4 and the flagship Mega Monster, hoses are listed as optional, so tell us if you want them added when you order.
What is the difference between the Monster 4 and Monster 6 calipers?
Piston count and clamping force. The Monster 6 uses six pistons against the Monster 4's four, on the same pad size, which HiSpec state gives up to 63% more piston area. Both sit on the same disc sizes at each step, so the choice is about how the car is driven, not wheel size. A road car that sees occasional track days is well served by the Monster 4; a car doing regular trackwork or carrying more power suits the Monster 6.
Will these kits work with ABS and ESP on the 300ZX?
Tarox state full ABS and ESP compatibility on all three of their 300ZX kits. HiSpec's fitment is to the front hub and does not touch the ABS sensor or reluctor ring, so compatibility on a standard car should be fine. If your car has had any non-standard ABS work done, tell us when you order and we will check with HiSpec before the kit goes to build.
What we would actually fit
On a road car keeping its 16 inch wheels, the HiSpec 300mm Billet 4 is the honest starting point, and the Tarox 310mm Sport is there if you want everything fitted in one delivery instead of adding hoses later. On 17s, Garreth’s default is the HiSpec 325mm Monster 4: it already includes the pad and hoses, and for most 300ZXs that is more caliper than the car needs to prove a point.
For a car that actually sees the track, the 360mm Monster 6 is the one Cameron fits, and the Tarox 340mm is the kit for anyone who wants the biggest disc on the page in one complete delivery, regardless of what the title on the listing currently says. The Mega Monster sits above both of those on price and is worth a phone call before ordering online, because it is the kit where getting the pad and caliper choice right matters most.
Ring us on 0115 9893488 with your current wheel size and what the car does at weekends. Because nothing here forks by generation or engine, that call is usually a short one, and checking spoke clearance on a specific wheel is Cameron’s side of the business.