TTSPORT AR4 4-Piston Rear Big Brake Kit
- Fitment checked against verified vehicle data before dispatch
- Warranty policy
- Installation support & torque specs
- Insured worldwide shipping — tracked
Vehicle fitment (3)
- Lexus GX460 Shares the J150 platform with the Land Cruiser Prado 150. TTSPORT front kits listed: AR6 (Ø345 × 32 mm), AR4 (Ø345 × 28 mm), OR6 (Ø345 × 32 mm per manufacturer list — confirm thickness when ordering).
- Toyota Land Cruiser 200 TTSPORT front kits listed for this chassis: AR6 (Ø362 × 32 mm), AR4 (Ø365 × 28 mm), OR6 (manufacturer list quotes Ø355 × 32 mm — confirm thickness when ordering). Minimum wheel size 17 in; check the per-kit spoke clearance figure against your wheels.
- Toyota Land Cruiser Prado 150 TTSPORT front kits listed for this chassis: AR6 (Ø345 × 32 mm), AR4 (Ø345 × 28 mm), OR6 (manufacturer list quotes Ø345 × 32 mm — confirm thickness when ordering). Minimum wheel size 17 in.
2012-2017 Lexus GX400
2010-2023 Lexus GX460
2008-2021 Toyota LC200
2008-2021 Lexus LX570
2007-2021 Toyota Tundra (XK50)
2008-2022 Toyota Sequoia (XK60)
Fitment is verified against manufacturer data for the listed vehicles, years and markets. Wheel clearance, hub offset and trim-level differences can affect installation — confirm your vehicle before ordering or ask our fitment team.
Not sure? Ask our fitment team →Specifications
| Brand | TTSPORT |
|---|---|
| Part type | Big Brake Kit |
| Axle position | Rear |
| Piston count | 4 |
| Caliper material | Forged aluminum alloy |
| Caliper finish | High-temperature gloss coating |
| Caliper mounting | OEM-style direct mount |
| Rotor material | High-Carbon Cast Iron |
| Rotor construction | One-piece rotor |
| Rotor dimensions | Ø365 mm × 28 mm |
| Rotor face pattern | Curved slot |
| Rotor Material | High-Carbon Cast Iron |
| Rotor Size | Ø365 × 28 mm, Ø345 × 28 mm |
| Caliper Color | Red, Black, Yellow, Blue, Silver, Gold, Custom Color |
| Minimum wheel size | 17" |
| Pad compound (included) | M-01 |
| Brake line construction | Three-layer reinforced construction |
| Brake line material | PTFE inner liner / SUS304 stainless-steel braid / PVC protective outer sheath |
| Brake line fitting | Vehicle-specific fittings; caliper-side and chassis-side fittings vary by application |
| Intended use | Street |
| Vehicle class | Off-Road & SUV, Pickup Truck |
| SKU | TT-AR4-CI-365X28-RED |
| Lead time (approx.) | 15 business days |
Brake pad compounds
| Compound | Intended use | Rotor | Max temp | Avg μ |
|---|---|---|---|---|
| M-01 · STREET included | Street / fast-road tuning | Cast iron | 600 °C | 0.38 |
| M-02 · STREET+ | Street / spirited road use | Cast iron | 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
Overview
The AR4 is a Direct-Mount-series rear-axle big brake kit, supplied complete for one axle: two 4-piston two-piece forged aluminum calipers, two one-piece rotors, one axle set of matched pads, stainless-steel braided lines and the mounting hardware needed to fit them.
It is a direct-mount kit: the caliper bolts to the vehicle's factory caliper mounting ears, so no adapter bracket is needed.
Rotors are high-carbon cast iron.
Wheel clearance is the first thing to check: this kit needs 17-inch wheels or larger. Send us your wheel model if you are unsure and we will confirm clearance before the kit ships.
Calipers are finished in a high-temperature gloss coating and are available in six standard colours, with a custom colour to order.
About the brand
TTSPORT
TTSPORT is MZ Brake's in-house performance brake brand, built around forged aluminium big brake kits supplied as complete one-axle kits.
All TTSPORT products →Questions about this part
Will this fit my wheels?
Big brake kits need clearance between the caliper and the wheel barrel and spokes. Check the minimum wheel size in the specifications and send us your wheel model if you are unsure — we will confirm with a clearance template.
Do I need new brake lines or fluid?
Most kits include the lines or adapters listed under What's in the box. We recommend fresh DOT 4 fluid and a full bleed after installation.
Can I install this myself?
Installation requires torque tools, a bleed procedure and a bed-in cycle. We recommend professional installation; our installation support page lists torque specs and bed-in steps.
Related brake parts
Need help choosing?
Not sure what fits? Ask our fitment team.
Send us your year, make, model, wheel size and how you drive — we confirm clearance and recommend the right kit.