KLM Race's rear differential cradle is machined in-house from solid billet. The bushing is solid too, so there is zero flex between the differential and the chassis. The diff stays put under load instead of moving around on hard launches.
Ships with ARP bolts.
Fitment: BMW M2 (G87), M3 (G80), M4 (G82), M240i (G42), M340i (G20)