Our Top Recommended Big Brake Upgrade Kits For Your Volkswagen Golf MK1
The Golf MK1 left the factory on 13 or 14 inch wheels across the range. The smallest kit on this page needs 15 inches. Every kit on this page needs at least 15 inches. On most cars in this series the wheel size comes in partway through the decision. On the MK1 it comes first, because upgrading the brakes means sorting the wheels at the same time. That is not a problem with the car; it is just the starting point to work out before anything else.
Once the wheel question is settled, the kit list is seven HISC- Billet 4 and Monster kits from 278mm to 335mm. The 278mm entry at £785.44 is the only solid single-piece disc in this catalogue. Every other kit uses a two-piece floating rotor. That design step accounts for the £403 gap between the entry kit and the next. The full Golf MK1 range is on the site if you want to browse before reading.
- Seven HiSpec kits from 278mm to 335mm, covering 15, 16 and 17 inch wheel setups
- The 278mm entry at £785.44 is the only solid single-piece disc here; every other kit uses a two-piece floating rotor
- Every kit starts at a 15 inch minimum: factory 13 or 14 inch wheels will not clear any of them
- Pads and braided hoses are priced separately on every kit, your choice of compound
- Three caliper options sit on the 335mm disc: Billet 4, Monster 4 and Monster 6
What is on this page
- HiSpec in this catalogue
- The wheel size table
- HiSpec 278mm Billet 4 1P (15in entry)
- HiSpec 285mm Billet 4 2P (15in floating disc)
- HiSpec 300mm and 310mm Billet 4 2P (16in build)
- HiSpec 335mm Billet 4 2P (17in)
- HiSpec 335mm Monster 4 2P (17in track)
- If the car is already on 17s
- What is in each box
- Every kit compared
- Common questions
- What we would actually fit
HiSpec in this catalogue
Tarox list kits for a number of classic and modern VW applications, but the Golf MK1 front hub is not in their catalogue. The full range here is HiSpec. HiSpec Motorsport in Dartford built seven kits for this vehicle, running the HISC-080 to HISC-086 series. Five use the Billet 4 four-piston caliper, covering disc sizes from 278mm to 335mm. Two use the Monster caliper family on the 335mm disc: the Monster 4 and the Monster 6. All are made to order in up to 28 working days, with calipers finished in black, red, blue, gold or silver.
HiSpec Motorsport
CNC machined in Dartford from 6082 T6 billet aluminium. Seven kits cover the Golf MK1 front hub from 278mm to 335mm across three caliper families. Made to order in up to 28 working days, five caliper colours. Pads and hoses priced separately so you choose the compound for the car.
Which wheel size clears which kit
HiSpec publish a minimum wheel diameter for every kit in this range, and all seven have a confirmed figure. The entry kit at 278mm needs 15 inches. The 285mm also clears 15. The 300mm and 310mm need 16 inches. All three 335mm kits need 17 inches. Those figures are taken from HiSpec’s published statements across the catalogue and apply regardless of car.
| Kit | Disc | Type | Smallest wheel |
|---|---|---|---|
| HiSpec 278mm Billet 4 1P | 278 x 22mm | 1P | 15 inch |
| HiSpec 285mm Billet 4 2P | 285 x 24mm | 2P | 15 inch |
| HiSpec 300mm Billet 4 2P | 300 x 28mm | 2P | 16 inch |
| HiSpec 310mm Billet 4 2P | 310 x 28mm | 2P | 16 inch |
| HiSpec 335mm Billet 4 2P | 335 x 28mm | 2P | 17 inch |
| HiSpec 335mm Monster 4 2P | 335 x 28mm | 2P | 17 inch |
| HiSpec 335mm Monster 6 2P | 335 x 28mm | 2P | 17 inch |
HiSpec 278mm Billet 4 1P: the 15 inch entry
This is the entry kit and the only solid single-piece disc in the Golf MK1 catalogue. At £785.44 it fits a 15 inch wheel, which most modified MK1s already run or can add without a large wheel budget on top. The Billet 4 four-piston caliper on the original front hub is a real step over the standard setup and it does not ask for a 16 or 17 inch wheel to get there.
The next kit up, the 285mm 2P at £1,188.53, clears the same 15 inch wheels but switches to a two-piece floating disc. On a car that sees mostly road use, the 278mm 1P at £785.44 does the job. On a car that goes on circuit regularly, the 285mm 2P earns the extra £403.
- £785.44 inc VAT
- 278x22mm solid single-piece disc
- 15 inch minimum wheel
- Four-piston Billet 4 caliper, five finish colours
- Pads and hoses priced separately
HiSpec 285mm Billet 4 2P: floating disc at 15 inch
At £1,188.53 this is the first two-piece floating disc in the catalogue. The rotor sits on an aluminium bell and can move fractionally as heat cycles in and out. On a Golf MK1 doing regular track evenings, that keeps pad contact more even as temperatures climb, and that is where the two-piece construction earns its cost. The wheel minimum stays at 15 inches, the same as the entry 278mm 1P. The £403 difference between the two kits reflects the disc construction, not the caliper or the wheel size.
- £1,188.53 inc VAT
- 285x24mm two-piece floating disc
- 15 inch minimum wheel
- Four-piston Billet 4 caliper
- Pads and hoses priced separately
HiSpec 300mm and 310mm Billet 4 2P: the 16 inch build
Two floating disc kits at the 16 inch minimum, sitting £21.48 apart. The 300mm at £1,233.29 and the 310mm at £1,254.77 both use the Billet 4 caliper with a two-piece floating disc. On a MK1 that has already moved to 16 inch wheels, Garreth’s answer is the 310mm without much deliberation: the extra 10mm of disc costs next to nothing more at this level, and on a car that goes on circuit the bigger rotor has more material to deal with heat.
If the car is on 16s and budget matters, the 300mm at £1,233.29 is a genuine option. Both kits share the same caliper and the same wheel minimum.
- 300mm at £1,233.29 / 310mm at £1,254.77, both inc VAT
- Both need 16 inch wheels
- Two-piece floating discs, 300x28mm and 310x28mm
- Pads and hoses priced separately
- Made to order in Dartford
HiSpec 335mm Billet 4 2P: the 17 inch Billet 4
The 335mm Billet 4 is the largest disc in the standard four-piston caliper range for this car, and it needs 17 inch wheels. At £1,357.50 it gives you the full-size rotor with the familiar Billet 4 caliper: the same four-piston design that runs from 278mm to 335mm, now on the largest floating disc available for this hub. On a MK1 being set up properly for circuit work, this is where the 17 inch wheel spend starts to make sense alongside the brake build.
- £1,357.50 inc VAT
- 335x28mm two-piece floating disc
- 17 inch minimum wheel
- Four-piston Billet 4 caliper, five finish colours
- Pads and hoses priced separately
HiSpec 335mm Monster 4 2P: the 17 inch track build
The Monster 4 caliper is physically wider than the Billet 4, with larger pistons and more pad area. At £1,534.62 on the same 335mm floating disc, it is the caliper built for sustained circuit use: more consistent pressure across the piston face, better performance as temperatures accumulate through a session. On a Golf MK1 running a regular track programme on 17 inch wheels, this is where Garreth would go over the Billet 4. The extra £177 buys the bigger caliper, not a bigger disc.
- £1,534.62 inc VAT
- 335x28mm two-piece floating disc
- 17 inch minimum wheel
- Monster 4 caliper, larger pistons than the Billet 4
- Pads and hoses priced separately
If the car is already on 17s
All three 335mm kits need 17 inch wheels and use the same size floating disc. The caliper is what changes. The Billet 4 at £1,357.50 is the standard four-piston option. The Monster 4 at £1,534.62 has larger pistons and more pad area for sustained circuit work. The Monster 6 at £1,671.90 adds two more pistons, six in total, and is built for the upper end of track use on this car. If you are planning a 17 inch build, the wheel size sorts itself. The question is how hard the car works on circuit.
What is in each box
Every kit includes the calipers, the discs and all Golf MK1-specific brackets, bells and fitting hardware. Pads and braided hoses are not in the box and are priced separately. That means you choose the pad compound to match how the car is used: a street compound for road use, something more aggressive for track evenings. Both can be added when the kit is ordered.
| In the box | HiSpec Billet 4 and Monster |
|---|---|
| Calipers | Billet 4 (278-335mm), Monster 4 or Monster 6 (335mm), 6082 T6 billet aluminium |
| Discs | 1P solid single-piece (278mm only) or 2P two-piece floating with aluminium bell (285-335mm) |
| Brackets, bells and hardware | Included |
| Braided hoses | Priced separately |
| Pads | Priced separately, your choice of compound |
| Caliper finish | Black, red, blue, gold or silver |
| Built in | Dartford, UK, made to order, up to 28 working days |
Every kit on this page compared
| Kit | Disc | Type | Smallest wheel | Pads and hoses | Price inc VAT |
|---|---|---|---|---|---|
| HiSpec 278 Billet 4 1P | 278x22mm | 1P | 15in | Extra | £785.44 |
| HiSpec 285 Billet 4 2P | 285x24mm | 2P | 15in | Extra | £1,188.53 |
| HiSpec 300 Billet 4 2P | 300x28mm | 2P | 16in | Extra | £1,233.29 |
| HiSpec 310 Billet 4 2P | 310x28mm | 2P | 16in | Extra | £1,254.77 |
| HiSpec 335 Billet 4 2P | 335x28mm | 2P | 17in | Extra | £1,357.50 |
| HiSpec 335 Monster 4 2P | 335x28mm | 2P | 17in | Extra | £1,534.62 |
| HiSpec 335 Monster 6 2P | 335x28mm | 2P | 17in | Extra | £1,671.90 |
Prices include VAT and were correct on 9 September 2026. Wheel size figures are from HiSpec’s published statements across the catalogue.
Common questions
Why does every kit on this page need 15 inch wheels?
The Golf MK1 left the factory on 13 or 14 inch wheels depending on trim. The smallest kit here, the 278mm Billet 4, has a confirmed minimum wheel diameter of 15 inches, set by the caliper size. That rule applies to every kit in this catalogue. If the car is still on factory-size wheels, new wheels are part of the project alongside the brake kit.
What is the difference between the 1P and 2P discs on this car?
The 278mm Billet 4 uses a solid single-piece disc machined from one casting. Every other kit uses a two-piece floating disc: the rotor bolts onto a separate aluminium bell and can move fractionally as it heats and cools. On a road car the 1P upgrade is a real step. On a car doing regular circuit sessions, the 2P keeps pad contact more even at track temperatures, which is where the extra cost earns its place.
What are the three older listings in this category?
The category includes three older-format HiSpec listings for 285mm, 300mm and 310mm kits. These were the original product entries before the current HISC- series replaced them. They carry different prices from the HISC- kits in this guide. Use the HISC- listed kits for current pricing. If you see a listing without a HISC- reference and want to confirm which is current, give us a ring before ordering.
What does the Monster caliper add over the Billet 4?
The Monster 4 caliper is physically wider than the Billet 4 and carries larger pistons. It applies more consistent pressure across the pad and is designed for sustained circuit use where the Billet 4 would start to lose performance under repeated high-temperature braking. The Monster 6 adds two more pistons, six in total, and is built for the upper end of track work. All three caliper options on the 335mm disc share the same wheel minimum: 17 inches.
How long does a HiSpec build take?
All HiSpec kits are made to order in Dartford. Allow up to 28 working days from order. Lead times vary through the year, so ask when you place the order and we will give you the current picture.
What we would actually fit
On a MK1 moving to 15 inch wheels for the first time, the 278mm 1P at £785.44 is the natural starting point. It is the lowest entry price with a confirmed wheel size, a four-piston Billet 4 caliper, and nothing to argue with for a road or light track build.
For a 16 inch build on a car that gets track days, Garreth’s pick is the 310mm 2P at £1,254.77. Two-piece floating disc, confirmed 16 inch minimum, and the £21 over the 300mm buys 10mm more rotor. On most MK1s at this stage of build, that is the right call.
On a car built for regular circuit work on 17s, the Monster 4 at £1,534.62 is the answer. The caliper is sized for sustained track use in a way the Billet 4 at £1,357.50 is not, and the £177 difference earns its place on a car that actually uses the brakes hard.
If you need to work out which kit clears your wheels, or want Cameron to check spoke clearance on a specific wheel, ring us on 0115 9893488. The clearance check usually takes about five minutes.