Good-Win Racing Mazda Performance Parts

11.75" BBK Rotor Upgrade Kit


Upgrade any 11" Big Brake Kit!

Miata 1990-2005 · Brakes · Brake Kits and Complete Packages

Part Number: 61-2009

Application: 1990-2005

Price: $499.00



11.75" BBK Rotor Upgrade Kit
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This is an upgrade kit for those who ALREADY have an 11" Big Brake Kit using a Wilwood caliper. Upgrades you to an 11.75" rotor - the largest size you can fit under a 15" wheel for even more bite and heat capacity. We run these rotors on all our turbo, supercharged, and engine swapped NA/NB Miatas here.

*** Photo above shows only one side of the kit but for this price you are getting a full kit for Left and Right. ***

Kit includes 11.75" rotor rings with V8R FEA-tested hats and brackets to place the Wilwood caliper over the larger rotor. All hardware is included.

Works with the following Wilwood lug-mount calipers:
Dynalite 4 piston
Dynapro 4 piston
Dynapro 6 piston

Wilwood UL32 - Economy lightweight straight-vane rotor. Good for street use, autocross, and very affordable replacement cost.
AP Racing J Hook - Motorsport grade curved-vane rotor from one of the top brands in the world. Substantialy better cooling and longer life, will outlast the Wilwood rotors many times over. AP's signature "J Hook" slot style. Ideal for track use, endurance racing, etc. Yes, these can be used on the street as well without any drawbacks.

Install notes:
The upgrade is a breeze, no need to disconnect brake lines - just unbolt the caliper via two bolts, swap rotors and brackets, and bolt the caliper back on. No brake fluid bleeding.

*** Product images may differ from actual product appearance ***


Brian, Thank you!!! We last spoke in November about some upgrades for my 2011 MX5 soft top. It has finally warmed up in NE Ohio and two relaxed weekends of wrenching on my car were well worth the effort. Installation of the RoadsterSport ceramic coated street header was straight forward and took under 8 hours, including a 40 minute test drive and cleanup of the garage! Combined with the RoadsterSport Q exhaust, the sound is fantastic and the increased torque, horsepower and performance make it a blast to drive. The addition of the Cobalt shock tower brace, Racing Beat sway bars, ILM front power train and X braces really enhanced the ride - minimal body roll, comfortable and very responsive. Your recommendations really helped transform the car from great to fantastic. Your research, product development and candid recommendations make you a standout in the industry. My only questions are - what's next on my list .... And how soon will my wife want the same upgrades on her 2012 PRHT ... Again, thank you!!! Charles G

-- Charles

I received the Roadstersport II, and I wanted to compliment you guys on an awesome product. The Miata should have these on from the factory. They make a great sound, that is not obnoxious at all. The exhaust also installed seamlessly!!! I will buy all of my Miata stuff from you in the future. Thanks,

-- Nate