This product is specifically designed for the rear suspension system of the BYD Qin PLUS EV (including Champion Edition and Intelligent Driving Edition). It is a core structural component connecting the rear wheel to the vehicle body, bearing the rear wheel load—the rear knuckle assembly. As the "joint hub" of the rear suspension system, the rear knuckle connects multiple components including the rear wheel hub bearing, brake caliper, rear shock absorber, and rear trailing arm, transmitting road impacts from the wheel to the body while providing a precise mounting reference for wheel alignment. It is a critical component for driving stability, braking safety, and uniform tire wear.

The BYD Qin PLUS EV features a MacPherson strut front suspension + torsion beam rear suspension chassis structure. In the torsion beam rear suspension system, the knuckle is fixedly mounted at both ends of the torsion beam, with the rear wheel bearings, brake system, and shock absorbers mounted on it, bearing the full rear weight and lateral forces of the vehicle. The Qin PLUS EV has body dimensions of 4765-4795mm × 1837mm × 1515mm, a wheelbase of 2718mm, and a rear track of 1590mm. Due to the heavy weight and low center of gravity of the battery pack, pure electric vehicles place higher demands on the strength and durability of rear suspension structural components.

As a professional manufacturer of automotive chassis suspension parts, we develop and produce strictly according to BYD OEM technical standards. Using high-strength ductile iron (QT450-10) material through precision casting, critical areas are CNC machined for precision. The product offers excellent impact resistance and dimensional stability, adapting to all Qin PLUS EV models from 2021 to present. The mounting holes are 100% precisely matched with the original vehicle for direct replacement of damaged or deformed original knuckles, making it an ideal choice for aftermarket repair, accident vehicle restoration, and chassis overhaul.