Our Top Recommended Big Brake Upgrade Kits For Your Peugeot 306
Tarox list six kits for the Peugeot 306 and every single one is marked “all models”. Whether the car is a GTI-6, an XSi, a Rallye or a diesel estate, the brackets and offsets are common across the range, so picking a kit here comes down to disc size and budget, not which engine sits under the bonnet. That is a simpler buying decision than some cars in this series get, where the wrong engine listing means a return before anything is fitted.
What is not straightforward is the price ladder. On the HiSpec side the 360mm Monster 4 costs less than the 335mm Monster 4 one size down. On the Tarox side the smallest kit, the 284mm Sport Compact, costs more than the bigger, better-built 305mm Sport sitting above it. Neither is a typo on our end, both prices are exactly what the catalogue says, and we are flagging them here instead of quietly pointing you at the dearer of the two. The full 306 range is on the site if you want to see the raw listings yourself.
- Every kit on this page converts the front axle: calipers, discs, brackets and fitting hardware specific to the 306
- All six Tarox kits are listed as fitting every 306 model, no engine-specific versions to get wrong
- Two prices on this page run backwards: the 360mm HiSpec Monster 4 undercuts the 335mm Monster 4, and the 284mm Tarox Sport Compact costs more than the bigger 305mm Sport
- HiSpec's 285mm Billet 4 kit is shared with the Peugeot 205 and is the only kit here on their newer 2P part-number format
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. Discs are heat treated, CNC faced and hand balanced to 0.05mm. Every 306 kit arrives with vehicle-specific braided hoses and Corsa pads already fitted, and every one is listed as fitting the whole 306 range, not one engine.
HiSpec Motorsport
Machined in Dartford from 6082 T6 billet aluminium, calipers and pistons both. Every kit is made to order in up to 28 working days, calipers finished in your choice of black, red, blue, gold or silver. Pads and braided hoses are priced separately so you choose the compound for how the car is used.
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
A bigger disc means a bigger minimum wheel, and on the 306 the range runs from 15 inch at the smallest kits up to 18 inch on HiSpec’s biggest Monster discs. HiSpec publish the wheel size for every kit from their own catalogue. Every Tarox figure below was looked up directly on tarox.co.uk against the 306 listings; where their site does not currently carry a page for a specific kit, we have said so instead of guessing.
| Kit | Disc | Smallest wheel |
|---|---|---|
| HiSpec 285mm Billet 4 (205/306 shared) | 285 x 24mm | 15 inch |
| Tarox 284mm Sport Compact | 284 x 26mm | 15 inch |
| HiSpec 300mm Billet 4 | 300mm | 16 inch |
| Tarox 305mm Sport | 305 x 26mm | 16 inch |
| HiSpec 325mm Billet 4 | 325mm | 17 inch |
| HiSpec 335mm Monster 4 | 335mm | 17 inch |
| HiSpec 335mm Monster 6 | 335mm | 17 inch |
| Tarox 318mm Sport | 318 x 26mm | 17 inch |
| Tarox 330mm Sport | 330 x 26mm | 17 inch |
| Tarox 340mm Super Sport | 340 x 26mm | 17 inch |
| HiSpec 360mm Monster 4 | 360mm | 18 inch |
| HiSpec 360mm Monster 6 | 360mm | 18 inch |
| Tarox 360mm Grande Sport | 360 x 26mm | To confirm |
HiSpec 285mm Billet 4: the 15 inch shared kit
This is the smallest kit on the page, and the only one that also fits a Peugeot 205: HiSpec sell it as a single 205/306 listing on their newer 2P part numbering, SKU HISC-068. Four piston Billet 4 caliper, machined from 6082 T6 billet aluminium with external boots to keep grit off the seals, on a 285mm two piece floating disc. Clears a 15 inch wheel, worth knowing if the car is still on its original steels or early alloys.
It is also the only kit on this page using HiSpec’s newer SKU format. Every other HiSpec size here, from 300mm up to 360mm, is still on their older part-number style. That is not the duplicate-listing problem we flag on some other guides, since none of the older 306 sizes overlap with a newer one at the same disc diameter, but it does mean this vehicle has not had the full migration yet.
- £1,188.53 inc VAT
- Clears 15 inch wheels
- Shared listing with the Peugeot 205 (SKU HISC-068)
- Pads and hoses priced separately; five caliper colours
- Made to order in up to 28 working days in Dartford
HiSpec 300mm Billet 4: the 16 inch step
Same Billet 4 caliper as the 285mm kit, stepped up to a 300mm disc. HiSpec’s own copy for this listing describes the Billet 4 family generically instead of quoting an exact disc thickness, which is normal for their older-format 306 listings, but the wheel clearance is published clearly: 16 inch.
For a 306 already sitting on 16s, this is the straightforward move over the 285mm kit: same caliper, same maintenance, more disc. £275.47 inc VAT more than the 285mm kit for the extra leverage, and Garreth’s answer for most road 306s on 16 inch alloys.
- £1,464.00 inc VAT
- Clears 16 inch wheels
- Four piston Billet 4 caliper
- Pads and hoses priced separately; five caliper colours
- Made to order in up to 28 working days in Dartford
Tarox 305mm Sport: the kit that undercuts the smaller one
This is where the price ladder does something worth flagging. Tarox’s own smallest 306 kit, the 284mm Sport Compact, costs £1,981.04 inc VAT. This 305mm Sport, one size up, is £1,860.66. It is also the better built of the two: a six piston B32 caliper on a proper two piece floating disc, where the 284mm kit uses a compact caliper on a single piece disc. Bigger disc, better construction, lower price. We would not point anyone at the smaller kit on this page.
Like every Tarox kit here it is listed for all 306 models, not one engine, and it arrives complete: Corsa pads fitted, braided hoses in the box, disc balanced to 0.05mm. Clears a 16 inch wheel.
- £1,860.66 inc VAT, complete with pads and braided hoses fitted
- Clears 16 inch wheels
- Six piston B32 billet caliper, hand assembled in Italy
- Two piece disc balanced to 0.05mm
- Cheaper than the smaller 284mm Sport Compact kit
HiSpec 335mm and 360mm Monster: where the bigger kit costs less
The other backwards price on this page sits inside HiSpec’s own Monster range. The 360mm Monster 4 is £1,635.00 inc VAT. The 335mm Monster 4, one size down, is £1,740.00: £105 more for less disc. It is the same pattern we have flagged on the Ford Escort guides in this series, and it is genuinely how HiSpec have priced it, not a mistake on our end.
The choice between Monster 4 and Monster 6 is about use, not size. The Monster 6 adds a third pair of pistons per caliper for more clamping area, at roughly £130 to £190 more depending on disc size. Both sit on a two piece floating disc with high temperature EPDM seals and stainless wear plates, and both clear the wheel size published for that disc: 17 inch at 335mm, 18 inch at 360mm.
- 335mm Monster 4 £1,740.00 inc VAT, Monster 6 £1,773.00 inc VAT, both clear 17 inch
- 360mm Monster 4 £1,635.00 inc VAT, Monster 6 £1,863.00 inc VAT, both clear 18 inch
- The 360mm Monster 4 is the cheapest of the four despite the biggest disc
- High temperature EPDM seals and stainless steel wear plates
- Pads and hoses priced separately; five caliper colours
Tarox 360mm Grande Sport: the flagship, wheel size to confirm
The biggest kit on the page: a twelve piston caliper, Tarox code B400/B40R, on a 360mm two piece disc balanced to 0.05mm, Corsa pads fitted and braided hoses in the box, the same as every other Tarox kit here. At £3,610.00 inc VAT it sits well above everything else on this page and is built for a 306 running serious power or regular track days.
One thing we will not do is invent a wheel size for it. Tarox’s own site no longer carries a page for this specific kit, so we cannot pull a published minimum clearance the way we can for every other kit here. HiSpec’s 360mm kits need an 18 inch wheel, so this one will need at least that, but Cameron will get the exact figure confirmed with Tarox before you order instead of guessing.
- £3,610.00 inc VAT, complete with pads and braided hoses fitted
- Twelve piston caliper, Tarox code B400/B40R
- 360mm two piece disc, balanced to 0.05mm
- Minimum wheel size not currently published by Tarox; we confirm before you order
- All 306 models, no engine-specific listing
More options at 17 inch
Between the entry kits and the Monster and Grande Sport picks sit three more 17 inch options. The HiSpec 325mm Billet 4 is the biggest disc in their Billet 4 line before you move up to the Monster caliper, £1,710.00 inc VAT with pads and hoses extra. The Tarox 318mm and 330mm Sport kits sit either side of it, both six piston B32 calipers on two piece discs, both complete with pads and hoses, at £2,020.00 and £2,280.00 inc VAT. There is also a 340mm Tarox Super Sport at £2,670.00 inc VAT between the 330mm Sport and the 360mm flagship: worth knowing the listing title calls it “10pot” but Tarox’s own kit contents list an 8-piston caliper, code B34GT/B360. Go by the spec, not the product title. We have corrected it in the compare table below.
What is actually in each box
The headline prices sit further apart than the finished builds do once you spec them level. Add pads and braided hoses to the HiSpec side and the gap with the Tarox kits narrows. Compare finished builds, not the headline numbers.
| In the box | HiSpec | Tarox |
|---|---|---|
| Calipers | Billet 4 or Monster, 6082 T6 billet aluminium | Sport or Grande Sport, billet alloy, hand assembled in Italy |
| Discs | Two piece floating, with mounting bells | Two piece floating (single piece on the 284mm), balanced to 0.05mm |
| Brackets and hardware | Included | Included |
| Braided hoses | Priced separately | Included |
| Pads | Priced separately, your choice of compound | Corsa pads, fitted |
| Engine-specific listings | No, one listing per disc size | No, all listed as "all models" |
| 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 285mm Billet 4 (205/306) | 285 x 24mm | 4 piston | 15in | Extra | £1,188.53 |
| Tarox 284mm Sport Compact | 284 x 26mm | 4/6 piston | 15in | Included | £1,981.04 (runs above the 305mm kit) |
| HiSpec 300mm Billet 4 | 300mm | 4 piston | 16in | Extra | £1,464.00 |
| Tarox 305mm Sport | 305 x 26mm | 6 piston | 16in | Included | £1,860.66 |
| HiSpec 325mm Billet 4 | 325mm | 4 piston | 17in | Extra | £1,710.00 |
| HiSpec 335mm Monster 4 | 335mm | 4 piston | 17in | Extra | £1,740.00 |
| HiSpec 335mm Monster 6 | 335mm | 6 piston | 17in | Extra | £1,773.00 |
| Tarox 318mm Sport | 318 x 26mm | 6 piston | 17in | Included | £2,020.00 |
| Tarox 330mm Sport | 330 x 26mm | 6 piston | 17in | Included | £2,280.00 |
| Tarox 340mm Super Sport | 340 x 26mm | 8 piston (listing says "10pot") | 17in | Included | £2,670.00 |
| HiSpec 360mm Monster 4 | 360mm | 4 piston | 18in | Extra | £1,635.00 (runs below the 335mm kits) |
| HiSpec 360mm Monster 6 | 360mm | 6 piston | 18in | Extra | £1,863.00 |
| Tarox 360mm Grande Sport | 360 x 26mm | 12 piston | To confirm | Included | £3,610.00 |
Prices include VAT and were correct on 16 August 2026. The K Sport 306 kit in our catalogue is not included above, as this series covers Tarox and HiSpec only.
Common questions
Do any of these kits also fit a Peugeot 205?
One does: the HiSpec 285mm Billet 4, SKU HISC-068, is listed as a single 205/306 kit on HiSpec's newer 2P part numbering. Every other kit on this page, from both brands, is 306 specific.
Do the Tarox kits differ by engine, like the GTI-6 against a diesel model?
No. Unlike some cars in this series, where Tarox split the range three ways by engine, every Tarox kit for the 306 is listed as fitting all models. The brackets and offsets are common across the range, so the kit choice comes down to disc size and budget, not fitment.
Why does the 360mm HiSpec Monster 4 cost less than the 335mm Monster 4?
We checked twice before publishing this because it looked wrong to us too, but £1,635.00 against £1,740.00 is what HiSpec charge for the two sizes. Their Monster range pricing does not always climb with disc size, and the 306 happens to be one of the vehicles where that shows. If your wheels clear an 18 inch minimum, there is no reason to pay more for the smaller 335mm disc, though the usual spoke-depth check with Cameron still applies before ordering.
What is the Tarox "10pot" kit actually running?
The 340mm Super Sport listing title says 10pot, but Tarox's own kit contents describe an 8-piston caliper, code B34GT/B360, with sequential piston sizing. We go by the spec sheet, not the product title, and the compare table above lists it correctly as 8 piston.
Why are pads and hoses extra on the HiSpec kits but not the Tarox kits?
HiSpec price their kits without pads or hoses so you choose the compound: a street pad and a track pad are very different things, and the right choice depends on how the car is used. Tarox fit Corsa pads and braided hoses as standard. Ask us for a finished-build price on either brand and we will put pads and hoses on top of the HiSpec figure so you are comparing like for like.
What we would actually fit
On a 306 still on 15 inch wheels, the HiSpec 285mm Billet 4. It is the cheapest kit on the page and, being shared with the Peugeot 205, one of the better supported part numbers HiSpec run. On 16s, Garreth’s money goes on the Tarox 305mm Sport over the smaller 284mm Sport Compact: bigger disc, better disc construction, and it costs less, so there is no argument for the smaller kit.
For a 306 on 17s that sees regular track use, the HiSpec Monster 4 at 335mm is the sensible default, and if the wheels genuinely clear an 18 inch minimum the 360mm Monster 4 does more for less money, a rare case in this series where the bigger kit is also the cheaper one. The Tarox 360mm Grande Sport is for a 306 running real power: it is the most complete kit on the page, and we would confirm the exact wheel clearance with Tarox before it goes on the car instead of assuming.
Ring us on 0115 9893488 with your current wheel size and what the car does at weekends. Checking spoke clearance on a specific alloy is Cameron’s side of the business, and most calls like this are done inside five minutes.