That's intentional on the manufacturer's part; my last set of track pads (PFC08) also lacked front retaining clips but had them on the rears.
Those pads will work fine but may rattle ...my car sounded like a bucket of bolts going over bumps. I didn't like it. My advice is to send them back and get different pads.
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2024 BMW M3 Sedan Frozen Pure Grey II/Fjord Blue, 6MT
Past: 2021 Z4 M40i Frozen Grey II/Black Alcantara | 2017 F30 340i Mineral Gray/Coral Red, 6MT | 2011 E92 335i Le Mans Blue/Black, 6MT
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