TTSPORT Evolution EB8 8-Piston Front Big Brake Kit

The TTSPORT Evolution EB8 is the core front brake upgrade kit in the TTSPORT Evolution series. Positioned between the EB6 (6-piston) and the flagship EB10 (10-piston) models, it is specifically engineered for mid-to-large new energy vehicles, SUVs, and high-performance sedans. It emphasizes a linear braking feel, excellent heat dissipation and fade resistance, and reliability suitable for both street and track use, making it a highly recognized and versatile 8-piston upgrade solution within the series.

The TTSPORT Evolution EB8 8-piston front big brake kit is designed for drivers who demand greater heat capacity, more powerful pedal response, and superior braking stability compared to factory calipers. Featuring a two-piece forged aluminum alloy caliper, a staggered piston configuration (28mm/32mm), and 380–405mm two-piece rotors, it delivers immense stopping power while maintaining smooth operation, ensuring confidence with every lap and every stop.

1. Caliper Technology and Specifications

The EB8 utilizes a two-piece forging process and a race-inspired split-caliper design. Its core specifications and technical features are as follows:

Structure and Construction: Two-piece forged aluminum alloy opposed 8-piston caliper (28mm x 4 / 32mm x 4). The caliper body features precision cutouts for weight reduction, with a net weight of approximately 5.3kg per unit. It employs a through-bolt fastening structure that offers excellent resistance to deformation under high-pressure braking while increasing the surface area exposed to airflow for cooling.

Piston Configuration: 4 pistons per side, with diameters of 28mm, 28mm, 32mm, and 32mm respectively, providing a total piston area of approximately 56.77cm². It utilizes two-piece ventilated pistons paired with optimized high-temperature resistant seals for enhanced thermal stability, and is compatible with both steel and carbon-ceramic brake rotors. Multi-pad brake design: Features a race-inspired 4-pad layout (per caliper) where each pair of pistons independently actuates a single pad. Compared to traditional dual-pad setups, this ensures more uniform pressure distribution, effectively reducing uneven wear and maintaining consistent friction stability during repeated braking. Internally vented Ø380 or Ø405 mm rotors with CNC-machined aluminum hats. Choose heat-treated high-carbon iron or carbon-ceramic composite to match your driving range and service expectations.

Everyday durability: Comes standard with piston dust boots and waterproof oil seals to meet the dust and corrosion resistance needs of daily street driving; extends maintenance intervals and ensures suitability for all-weather use.

Aesthetics and color options: Available in seven standard colors—red, fluorescent green, orange, black, silver, yellow, and blue—with support for custom color personalization.

Additional specifications and parameters are listed in the table below:

Brake calipers
series	Evolution Series
Model/Application	EB8
axle position	front
Number of pistons	8-piston
Piston type	Two-piece insulated piston with dust cover
Piston diameter	28 mm × 4 / 32 mm × 4
caliper dimensions	349 mm (length) × 166 mm (width) × 98 mm (height)
Piston total area	Each caliper is 56.8 square centimeters (total of all pistons).
Manufacturing process	Two-piece forged aluminum alloy body
net weight	Each caliper weighs 4.95 kg, excluding brake pads.
Surface treatment	High-temperature gloss coating
Recommended wheel size	19 inches or larger
Recommended rotor size	Diameter 380–405 mm × 34 mm
Brake disc options
Rotor Options	Iron/steel options	carbon ceramic option
Rotor material	Heat-treated high-carbon cast iron	Carbon ceramic composite materials
axle position	front	front
Rotor size	380/405 mm in diameter × 34 mm	380/405 mm in diameter × 34 mm
put up	Two-piece rotor assembly	Two-piece rotor assembly
ventilation	Internal ventilation	Internal ventilation
Rotor installation	Fixed or floating (depending on size and application)	Floating
Oriented design	Yes—left and right.	Yes—left and right.
Rotor surface pattern	Curved groove / Textured groove / Wavy groove / Drilling and slotting	Cross drilling
Brake pad options
cushion options	Iron/steel pad		carbon ceramic pad
Compatible rotor materials	Iron/steel rotors only		Carbon ceramic rotor only
Operating temperature range	0–600 °C		0–700 °C
Average coefficient of friction	μ ≈ 0.38 (varies with temperature, pipeline pressure, and rotor condition)		μ ≈ 0.45 (varies with temperature, pipeline pressure, and rotor condition)
line
Brake line structure	Three-layer structure
Brake piping materials	PTFE liner / SUS304 stainless steel braided layer / PVC protective outer sheath
Brake pipe connector	Vehicle-specific; mounting methods on the caliper side and chassis side vary depending on the application.
brackets
Rotor cap manufacturing process	CNC machining
Rotor cap material	High-strength aluminum alloy
Caliper bracket manufacturing process	CNC machining
Caliper bracket material	carbon steel
Installation and Adaptation
Minimum spoke gap	107 mm
Caliper mounting type	Radial mounting, with vehicle-specific bracket
Rotor diameter selection	Choose 380 mm or 405 mm depending on the application scenario.
Hospitalization preparation procedures	Before use, you must comply with the following:

Note: The brake pad formula is matched with the brake disc material . Iron/steel brake pads can only be used with iron brake discs , while carbon ceramic brake pads can only be used with carbon ceramic brake discs.

2. Brake Rotor and Complete Kit Configuration

Brake Rotor Specifications

Two mainstream standard specifications are available, both featuring two-piece floating high-carbon steel rotors:

380×34mm: Fits 19-inch wheels and larger; suitable for small-to-medium performance cars and compact SUVs.

405×34mm: Fits 20-inch wheels and larger; a mainstream choice for mid-to-large SUVs and new energy vehicles.

Rotor face patterns include curved slots, "wheat-ear" slots, slotted/drilled combinations, and "coral" patterns, allowing for a tailored balance between heat dissipation, water/debris clearance, and noise performance. Upgrades to carbon-ceramic rotors are available to further reduce unsprung mass and increase heat tolerance. The two-piece floating design, paired with a lightweight aluminum hat, accommodates thermal expansion and contraction to minimize rotor deformation and reduce the risk of brake judder.

Standard Kit Configuration

The complete vehicle-specific front-wheel kit includes:

Calipers ×2: Two forged 8-piston front calipers.

Brake Pads: Complete brake pad set for both front calipers.

Brake Rotors ×2: Two two-piece rotors in your selected size and material.

Caliper Brackets ×2: Two CNC carbon-steel mounting brackets.

Rotor Hats ×2: Two CNC aluminum hats.

Brake Hoses ×2: Two PTFE/SUS304 stainless steel braided brake lines.

3. Compatibility and Installation Requirements

Verified Vehicle Models

Models with proven modification track records via official and authorized channels include:

New Energy Vehicles (NEVs): ZEEKR 001, ZEEKR X, XIAOMI SU7, Lixiang L8/L9, LYNK & CO 09, etc.

Luxury/Performance Vehicles: BMW X5 (G05), Porsche 911 (991/992), etc.

Other mid-to-large sedans, SUVs, and MPVs in the same class can also be fitted via custom mounting brackets, provided they meet the necessary installation space requirements.

Mandatory Installation Prerequisites

Wheel Size Requirements: 380mm rotors require 19-inch or larger wheels; 405mm rotors require 20-inch or larger wheels. Wheel spoke design and offset (ET value) affect actual compatibility; data verification is required prior to final installation.

Installation Position: These are front-specific calipers intended solely for front-wheel brake upgrades. For the rear wheels, the system can be paired with matching oversized rotors or the EP4S electromechanical integrated caliper to form a complete braking package, ensuring balanced front-to-rear braking force.

4. Performance Positioning and Usage Scenarios

Braking Feel: The 8-piston staggered layout delivers linear and refined braking force. Initial braking is gentle and easy to modulate, while the mid-to-late stages offer ample braking reserves without any abrupt "hitting a wall" sensation. This makes the system suitable for both daily city commuting and spirited driving. Heat Dissipation and Fade Resistance: The combination of hollowed-out caliper airflow channels, ventilated pistons, and large-diameter brake discs effectively accelerates heat dissipation during continuous braking and minimizes thermal fade, enabling the system to handle the high-intensity braking loads of track days and spirited mountain driving.

Product Positioning: Designed for "street and track" dual-use, this system strikes a balance between the smoothness and durability required for daily commuting and the performance needed for spirited driving; it is the most versatile mid-to-high-end solution in the Evolution series.

5. EB8 FAQs

Is the EB8 compatible with my vehicle?

The EB8 features a platform-based design and comes with vehicle-specific brackets and brake line fittings. Please provide your vehicle's year, make, model, and wheel specifications before ordering so we can verify caliper clearance, bracket compatibility, and disc size. Wheels must be 19 inches or larger, with a minimum spoke clearance of 107 mm. Wheel offset and spoke geometry are critical factors—if you are unsure, please send us your wheel details.

Should I choose 380mm or 405mm brake discs?

380mm discs are suitable for most street-driven vehicles and spirited driving applications. 405mm discs offer increased swept area and thermal capacity, making them better suited for heavier vehicles, frequent high-speed braking, or track day use. Both disc sizes feature a thickness of 34mm.

Iron or carbon-ceramic rotors?

Iron/steel discs are cost-effective and easy to maintain; they are compatible with brake pads featuring an operating temperature range of 0–600°C and a friction coefficient (μ) of approximately 0.38. Carbon-ceramic discs are lighter and offer greater longevity under heavy use; they are compatible with brake pads featuring an operating temperature range of 0–700°C and a friction coefficient (μ) of approximately 0.45. Brake pads must be matched to the specific disc material.

What is included in the kit?

Includes two forged 8-piston front calipers, a pair of two-piece brake discs (in your choice of size and material), matching brake pads, CNC aluminum alloy hats, CNC carbon steel mounting brackets, and PTFE/SUS304 stainless steel braided brake lines.

Do the brakes require a bed-in process?

Yes. A proper bed-in procedure is essential to transfer brake pad material onto the disc surface and stabilize the friction interface. Skipping this process can lead to uneven deposits, vibration, and reduced bite.