TTSPORT EMB4 Rear 4-Piston Big Brake Kit
TTSPORT EMB4 Rear 4-Piston Big Brake Kit
- TTSPORT
- Rear
- 4-piston
- Street
- Passenger Car
- Complete TTSPORT kit — everything for one axle
- Checked against your car before it ships
- Warranty & returns
- Installation help
- Built to order — ships in about 15 business days
About this kit
A complete rear big brake kit for the Porsche 718, Porsche Boxster 981, Porsche Boxster 987 and more. It uses two TTSPORT EMB4 4-piston calipers and a pair of two-piece rotors (345–380 mm) in high-carbon steel or carbon-ceramic, plus pads, braided lines and mounting hardware.
We match the mounting brackets to your car. You'll need at least 18-inch wheels with enough room for the caliper. Not sure? Send us your wheel details.
You choose the rotor size and rotor material. Caliper finish: Plated.
Built to order. It ships in about 15 business days.
Fits these cars
- Porsche 718 Recommended rotor size by kit: EMB4 Ø380 × 28 mm (at least 19-inch wheels).
- Porsche Boxster 981 Recommended rotor size by kit: EMB4 Ø380 × 28 mm (at least 19-inch wheels).
- Porsche Boxster 987 Recommended rotor size by kit: EMB4 Ø380 × 28 mm (at least 19-inch wheels).
- Porsche Boxster S 981 Recommended rotor size by kit: EMB4 Ø380 × 28 mm (at least 19-inch wheels).
- Porsche Boxster S 987 Recommended rotor size by kit: EMB4 Ø380 × 28 mm (at least 19-inch wheels).
- Porsche Boxster Spyder 987 Recommended rotor size by kit: EMB4 Ø380 × 28 mm (at least 19-inch wheels).
- Trumpchi GS8 Recommended rotor size by kit: EMB4 Ø380 × 28 mm (at least 19-inch wheels).
- Trumpchi GS8 Hybrid Recommended rotor size by kit: EMB4 Ø380 × 28 mm (at least 19-inch wheels).
- Trumpchi GS8S Recommended rotor size by kit: EMB4 Ø380 × 28 mm (at least 19-inch wheels).
- Trumpchi M8 Recommended rotor size by kit: EMB4 Ø380 × 28 mm (at least 19-inch wheels).
- Trumpchi M8 GPMA-L Recommended rotor size by kit: EMB4 Ø380 × 28 mm (at least 19-inch wheels).
- Trumpchi M8 Hybrid Recommended rotor size by kit: EMB4 Ø380 × 28 mm (at least 19-inch wheels).
Kits are matched to the cars listed by make, model and years. Wheels, hubs and trim levels can still differ, so check your car and wheels before you order, or ask us.
Car not listed? Ask us →Specifications
| Brand | TTSPORT |
|---|---|
| Part type | Big Brake Kit |
| Axle position | Rear |
| Piston count | 4 |
| Caliper mounting | Vehicle-specific bracket mount |
| Rotor Material | High-Carbon Steel, Carbon Ceramic |
| Rotor Size | Ø345 × 28 mm, Ø355 × 28 mm, Ø380 × 28 mm |
| Caliper Color | Plated |
| Minimum wheel size | 18" |
| Pad compound (included) | M-01 |
| Caliper material | Forged aluminum alloy |
| Caliper bracket | High carbon steel, CNC-machined |
| Rotor construction | Two-piece rotor assembly |
| Rotor hat | High-strength aluminum alloy, CNC machined |
| Rotor face pattern | Curved slot / Grain slot / Wave slot / Drilled and slotted / Cross-drilled |
| Brake lines | Three-layer reinforced construction, PTFE inner liner / SUS304 stainless-steel braid / PVC protective outer sheath |
| Intended use | Street |
| Vehicle class | Passenger Car |
| SKU | TT-EMB4-CI-345X28-PLT |
| Lead time (approx.) | 15 business days |
Brake pad compounds
| Compound | Intended use | Rotor | Max temp | Avg μ |
|---|---|---|---|---|
| M-01 · STREET included | Street — daily driving and commuting | High-Carbon Steel | 600 °C | 0.38 |
| M-02 · STREET+ | Street+ — spirited road driving | High-Carbon Steel | 650 °C | 0.42 |
| M-03 · CCB+ | Carbon-ceramic rotors only — street and track | Carbon Ceramic | 750 °C | 0.44 |
Pad compound is matched to the rotor material you select. Iron-compatible pads must not be fitted to carbon-ceramic rotors, or the other way round.
What's in the box
- Brake calipers × 2
- Brake pads (one axle set) × 4
- Brake rotors (two-piece assembly with hats) × 2
- Stainless-steel braided brake lines × 2
- Vehicle-specific caliper mounting brackets × 2
- Mounting hardware × 1 set
About the brand
TTSPORT
TTSPORT is MZ Brake's in-house performance brake brand: forged-aluminum big brake kits, high-carbon steel rotors and M-series pad compounds, supplied as complete one-axle kits.
All TTSPORT kits →Common questions
Will it fit my wheels?
Big calipers need room inside the wheel. Check the minimum wheel size in the specifications. If you're not sure, send us your wheel make and size and we'll check.
Do I need new brake lines or fluid?
Braided lines come with the kit. You'll need fresh DOT 4 fluid and a full bleed after fitting.
Can I fit it myself?
If you're used to brake work and have a torque wrench, yes. If not, have a workshop fit it. Our installation page covers the basic steps and bed-in.
Similar kits
Not sure what fits?
Send us your car and wheels. We'll tell you what fits.
Year, make, model, wheel size, and whether it's for the street or the track. We reply by email within one business day.