Yellow Speed Racing Rear 4 Piston Ultra Big Brake Kit - Audi A4 / S4 2001-2006 (B6)

Yellow Speed Racing’s Ultra Series Big Brake Kit is designed for road and track use. This big brake kit features optimum braking performance, attractive looks, easy installation and a cost-effective price. 

Factory brakes are designed primarily for daily driving on most applications. If you have added additional horsepower to your vehicle, or frequently compete in motorsports such as circuit racing, drifting, time attack or rally racing, then a big brake kit is an essential upgrade to prevent brake fade that is commonly experienced with the extreme brake temperatures that result from track use. 

By upgrading your factory brake system, not only do you improve braking performance, but other benefits include unsprung weight reduction, longer service intervals, as well as simpler brake maintenance. YSR's brake systems provide the driver with faster brake response, and maximum performance!

YSR big brake kits are a direct bolt-on modification, that requires common hand tools for proper installation on most vehicles. Customize your calipers color, finish and/or etching to give your vehicle a unique appearance. 

Rear Brake Kit Notes: 

1. Part numbers with (X) cannot retain OEM handbrake functionality.
2. Part numbers with (V) retain the OEM handbrake functionality.
3. Part numbers with (X)(★) can retain OEM handbrake functionality with use of a "YSR Handbrake Adapter System", which is sold separately by Yellow Speed Racing, USA.

Vehicle Compatibility: 01-06 Acura A4 (B6); sedan/avant (station wagon)/convertible, FWD & AWD; incl. S4 models; 5x112 lug pattern

Orientation: Rear

Caliper Types Available (Varies by Application): 

• YSCPR4a (Ø32mm, Ø28mm Pistons; 230mm x 69mm)

Rotor Styles Available: Slotted, Drilled, Drilled & Slotted (Straight or Curved Slots)

Rear Rotor Sizes Available (Varies by application): 

• 330mm x 28mm | (12.99" x 1.09")
• 356mm x 28mm | (14.02" x 1.09")

What's Included?

• Forged billet aluminum split design calipers with anti-rust coating, featuring vented aluminum pistons standard for improved heat transfer resistance
• Two-piece drilled, slotted, or drilled & slotted rotors with lightweight aluminum center bells. Rigid steel center bells are equipped for the rear rotors integrated with inner drums
• High Performance OEM+, Sport or Competition Brake Pads
• High quality stainless steel braided Teflon brake lines included with every kit
• CNC machined steel caliper mounting brackets for bolt-on caliper installation
• All hardware required for installation
• Owner's Manual
  

Not sure which kit fits best? Click the link to determine proper fitment with your wheel size. Wheel templates are available for test fitting before purchase. Email sales@ysr-usa.com for assistance.

https://yellowspeedracingusa.com/pages/big-brake-kit-information-specifications

*YSR recommends Motul 5.1 or RBF600 brake fluid. 

YSR Big Brake Kits are made to order. Please allow 15-25 business days for manufacturing & shipping. Photos are used for marketing purposes; the actual product will vary in appearance / style depending on options selected. 

**Photographs shown are stock photos; Actual items may vary in appearance or features. Please contact us for specific features of each kit.