Basic Specifications
Certification
IATF-16949, ISO9001
Drum Brakes Classification
Brake Drum
Main Market
South America, North America, Eastern Europe, Mild East, Southeast Asia, Africa, Western Europe, Northern Europe, Oceania, Southern Europe
Specification
355MM X 28MM 12 BOLT
Production Capacity
100,000 PCS/Year
Application & Details
Race Application Reference Table
| Manufacturer |
Vehicle Type |
Race Application |
Axle |
Side |
Diameter (mm) |
Thickness (mm) |
Brake Disc PN |
Mounting Bell PN |
Bobbin Set PN |
| Alfa Romeo |
Giulietta TCR |
Sprint |
Front |
Left / Right |
378 |
34 |
ED378340101 / ED378340201 |
- |
SA100120301 |
| Alfa Romeo |
Giulietta TCR |
Endurance |
Front |
Left / Right |
378 |
34 |
ED378340701 / ED378340801 |
- |
SA100120301 |
| Audi |
RS3 LMS TCR / TT Cup |
Sprint |
Front |
Left / Right |
378 |
34 |
ED378340101 / ED378340201 |
EB378120101 |
SA100120301 |
| Audi |
RS3 LMS / TT Cup |
Endurance |
Front |
Left / Right |
378 |
34 |
ED378340701 / ED378340801 |
EB378120101 |
SA100120301 |
| Cupra |
Leon [Mk3] Cupra TCR |
Sprint |
Front |
Left / Right |
378 |
34 |
ED378340101 / ED378340201 |
EB378120101 |
SA100120301 |
| Cupra |
Leon [Mk3] Cupra TCR |
Endurance |
Front |
Left / Right |
378 |
34 |
ED378340701 / ED378340801 |
EB378120101 |
SA100120301 |
| Hyundai |
i30 N Fastback, V2T class |
Endurance |
Front |
Left / Right |
362 |
32 |
ED362320301 / ED362320401 |
- |
SA100120301 |
| Lada |
Vesta Sport TCR |
Sprint |
Front |
Left / Right |
378 |
34 |
ED378340101 / ED378340201 |
- |
SA100120301 |
| Lada |
Vesta Sport TCR |
Endurance |
Front |
Left / Right |
378 |
34 |
ED378340701 / ED378340801 |
- |
SA100120301 |
| Opel |
Astra TCR |
Sprint |
Front |
Left / Right |
378 |
34 |
ED378340101 / ED378340201 |
EB378120201 |
SA100120301 |
| Porsche |
997 GT3 Cup |
Sprint / Endurance |
Front |
Left / Right |
380 |
32 |
ED380320101 / ED380321201 |
EB380100101 |
SA100100201 |
| Porsche |
991 GT3 Cup / GT America |
Sprint / Endurance |
Front / Rear |
Left / Right |
380 |
32 / 30 |
ED380320901 / ED380300401 |
EB380100501 |
SA100100201 |
| Volkswagen |
Golf GTI TCR |
Sprint / Endurance |
Front |
Left / Right |
378 |
34 |
ED378340101 / ED378340801 |
EB378120101 |
SA100120301 |
Individual Components: Mounting Bell
| Manufacturer |
Vehicle Type |
Axle |
Disc Interface PCD |
Stud Bolt Circle |
Center Hole Dia. |
Offset |
Face Thickness |
Part Number |
| Audi |
RS3 LMS TCR |
Front |
12 x 247.65 |
5 x 112 |
65 |
8.1 |
6 |
EB378120101 |
| Audi |
TT Cup |
Front |
12 x 247.65 |
5 x 112 |
65 |
8.1 |
6 |
EB378120101 |
| Cupra |
Leon [Mk3] TCR |
Front |
12 x 247.65 |
5 x 112 |
65 |
8.1 |
6 |
EB378120101 |
Individual Components: Bobbin Set
| Quantity |
A |
B |
C |
D |
Brake Disc Flange Thickness |
Part Number |
| 10 |
11 |
6.4 |
9.45 |
6.55 |
6.25 |
SA100100201 |
| 12 |
11 |
6.4 |
9.45 |
6.55 |
6.25 |
SA100120301 |
Performance Upgrades & Track Kits
| Manufacturer |
Vehicle Type |
Application |
Axle |
Side |
Dia. |
Thick. |
Assembly PN |
Rotor Replacement Kit |
| Porsche |
911 GT3 / RS / R / Turbo (991) |
Track Kit, Upgrade to Cast Iron OE |
Front / Rear |
Left / Right |
380 |
34 / 30 |
SD380340501 |
RK380340501 |
| McLaren |
600LT, 720S |
Track Kit, Upgrade to Carbon Ceramic OE |
Front / Rear |
Left / Right |
390 / 380 |
36 / 34 |
SD390360101 |
RK390360101 |
Material Properties
| Physical Properties |
| Density | 2.0 +/- 0.05 g/cm³ |
| Tensile Strength | 87 MPa |
| Compressive Strength | 212 MPa |
| Bending Strength | 189 MPa |
| Interlaminar Shear Strength | 26 MPa |
| Thermal Conductivity | 40~50 W/mk |
| Friction Properties |
| Dry Condition | 0.27 - 0.35 |
| In Fresh Water | 0.29 - 0.35 |
| In Sea Water | 0.24 - 0.29 |
| Static Friction | 0.35 - 0.55 |
Product Gallery
Frequently Asked Questions
What are the primary applications for these brake discs?
These high-performance brake discs are designed for street use, road racing, circle track racing, off-road applications, and drag racing. They support a variety of vehicle manufacturers including Audi, Porsche, Cupra, and Volkswagen.
What is Geomet painting, and what are its advantages?
Geomet is a water-based zinc flake coating applied to protect the brake rotors against corrosion. It offers high heat resistance and ensures the non-friction surface areas stay clean and rust-free over long-term usage.
Can the drill and slot configurations be customized?
Yes. Both drill and slot options are fully enabled and customizable to meet your specific thermal dispersion and aesthetic preferences.
What certifications do these brake disc components have?
All parts are manufactured in compliance with international automotive industry standards, holding ISO9001 and IATF-16949 quality system certifications.
Are individual mounting bells and bobbin sets available for replacement?
Yes, we provide individual components including mounting bells and bobbin sets (10-bolt and 12-bolt arrangements) mapped to original vehicle manufacturers' technical specifications.
Nittanya Auto
