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Magical Racing has released caliper cooling ducts compatible with the Kawasaki Ninja ZX-4R SE/ZX-4RR (2023-). The ducts channel airflow to the brakes, aiming to reduce heat fade from repeated hard use during sport riding.
The idea of cooling the calipers with ram air is refreshingly straightforward, and I like that. Push the brakes hard for a long time and heat fade changes the feel at the lever. Solving that physics through airflow rather than electronics is neat. I'd want to measure the actual effect on track, but for anyone pushing a ZX-4R hard, this is a sensible piece.
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Does a caliper cooling duct actually do anything for everyday riding?
It's built with circuit riding in mind, so I doubt you'd notice much benefit on the street.
Magical Racing parts have great build quality, so this catches my eye.
With aftermarket parts like this, the price really determines how easy it is to pull the trigger.
If it's compatible with the SE/ZX-4RR, does that mean the standard grade isn't?
The caliper shape's probably different, so the standard grade might need a separate design.
Curious whether it's actually as effective as it looks.
Given the ZX-4R's brake capacity, it's prone to fade on the circuit, so there's real demand for this.
