Page 15 of Kawasaki Motorcycles by Kawasaki USA

Brakes Rims Tires: Race Spec Components Already formidable front brake performance is further enhanced with a new radial-pump master cylinder that offers superb feel at the lever. New radial-pump front brake master cylinder operates the dual 300 mm petal front discs. The Ninja ZX-10R was the first production supersport bike to feature petal brake discs. This unique disc shape improves cooling and helps prevent disc warp. They are also lighter than conventional discs. Radial mount, 4-pot opposed-piston calipers with 4 independent pads deliver impressive stopping performance with excellent feel at the lever. The four smaller pads resist heat distortion better than two large pads reducing fade under heavy use.

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