Technical documents
Wilwood 170-12908 Big Brake Hat, Flared Bell, Aluminum – Mazda Miata Big Brake Front
$200.65
Wilwood 170-12908 Big Brake Hat – Flared Bell
Genuine Wilwood Big Brake Flared Bell rotor hat, as used (qty 2, one per side) in the 140-16093 big brake front kit for the 2006–2015 Mazda MX-5 Miata. GT Series Big Brake Flared Bell hats are precision-machined from premium aluminum alloys for high strength and minimized weight. This hat features threaded rotor mount holes for use with standard through-hole mount rotors, and when used with matched Wilwood rotor hardware kits provides solid, reliable performance in the most demanding conditions.
Specifications
| Wilwood Part No. | 170-12908 |
| Type | Big Brake Hat – Flared Bell |
| Material | Aluminum |
| Finish | Black E-Coat |
| Mount Hole Type | Threaded |
| Mount Style | Fixed Mount |
| Rotor Bolt Circle | 12 x 8.75″ |
| Hat Offset | 0.700″ |
| Hat Bolt Circle | 5 x 4.53″ |
| Center Register | 3.06″ |
| UPC | 889545042030 |
| Weight | 2.2 lbs |
Fits
- 2006–2015 Mazda MX-5 Miata (NC), as used in Wilwood 140-16093 FNSL6R Big Brake Front Kit (2 required per axle set)
Important Notes
- Sold individually – two (2) hats are needed for a complete front axle installation.
- Requires the matching Hat Bolt Kit, Wilwood P/N 230-8008 (sold separately, not stocked by Formula Race Parts at this time).
- Pairs with the 160-12962 left hand / 160-12961 right hand rotors and 120-16054 left hand / 120-16053 right hand calipers in the 140-16093 kit.






