TTSPORT AR4 4-Piston Rear Big Brake Kit
TTSPORT AR4 4-Piston Rear Big Brake Kit
- TTSPORT
- Rear
- 4-piston
- Street
- Off-Road & Pickup
We'll confirm the exact color with you before we build the kit.
- 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 Lexus GX400, Lexus GX460, Lexus LX570 and more. It uses two TTSPORT AR4 4-piston calipers and a pair of one-piece rotors (345–365 mm), plus pads, braided lines and mounting hardware.
It bolts onto the factory caliper mounts, so there are no adapter brackets to fit. 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 caliper color. Caliper colors: Red, Black, Yellow, Blue, Silver, Gold, or a custom color.
Built to order. It ships in about 15 business days.
Fits these cars
- Lexus GX400 Recommended rotor size by kit: AR4 Ø345 × 28 mm (at least 18-inch wheels).
- Lexus GX460 Recommended rotor size by kit: AR4 Ø345 × 28 mm (at least 18-inch wheels).
- Lexus LX570 Recommended rotor size by kit: AR4 Ø365 × 28 mm (at least 19-inch wheels).
- Toyota Land Cruiser 200 Recommended rotor size by kit: AR4 Ø365 × 28 mm (at least 19-inch wheels).
- Toyota Land Cruiser Prado 150 Recommended rotor size by kit: AR4 Ø345 × 28 mm (at least 18-inch wheels).
- Toyota Sequoia XK60 Recommended rotor size by kit: AR4 Ø365 × 28 mm (at least 19-inch wheels).
- Toyota Tundra XK50 Recommended rotor size by kit: AR4 Ø365 × 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 | OEM-style direct mount |
| Rotor Material | High-Carbon Steel |
| Rotor Size | Ø345 × 28 mm, Ø365 × 28 mm |
| Caliper Color | Red, Black, Yellow, Blue, Silver, Gold, Custom Color |
| Minimum wheel size | 18" |
| Pad compound (included) | M-01 |
| Caliper material | Forged aluminum alloy |
| Rotor construction | One-piece rotor |
| Rotor face pattern | Curved slot |
| Brake lines | Three-layer reinforced construction, PTFE inner liner / SUS304 stainless-steel braid / PVC protective outer sheath |
| Intended use | Street |
| Vehicle class | Off-Road & Pickup |
| SKU | TT-AR4-CI-345X28-RED |
| 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 |
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 (one-piece) × 2
- Stainless-steel braided brake lines × 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.