XYZ Racing Tarmac Rally Coilovers — BYD SEAL 4WD 2023-2026

The 海豹 SEAL 4WD’s floor-mounted battery pack adds a lot of mass low in the chassis, and on a closed tarmac stage that weight arrives through the suspension fast under trail-braking and mid-corner direction changes. A Tarmac Rally coilover is built around that reality: control a heavier car without ballooning ride height or losing traction the moment the road surface breaks up.

This is the Tarmac Rally spec for the Byd 海豹 SEAL 4WD, tuned for sealed-stage rally work rather than gravel or fast-road use. It’s aimed at drivers running the Seal on closed tarmac stages, where consistent damping across a repeated bump-and-camber sequence matters more than outright ride comfort.

What this coilover does for your 2023-2026 Byd 海豹 SEAL 4WD

Fitted to the dual-motor 4WD Seal, this coilover keeps the extra battery mass working with the road instead of against it. Across the broken tarmac and kerb strikes typical of a closed stage, the damper controls the body’s vertical movement so the tyre stays in contact with the road rather than skipping over it – which matters directly on a 4WD car already sending power to all four corners. Ride height and spring rate are set for a stage car rather than a daily commute, so the Seal sits closer to the tarmac and rotates more predictably when you brake into a compression. The result is less shock passed into the chassis over the big hits, and a front and rear axle that stay settled through the transition from braking to turn-in.

About the Tarmac Rally coilover

The Tarmac Rally coilover is built specifically to deal with uneven road surfaces at speed. Its damping is calibrated to absorb the impact of rough tarmac and soak up the jolt from larger bumps and compressions, rather than pass that shock straight into the body. The aim is to keep the tyre loaded and in contact with the road so a hit doesn’t unsettle the car mid-corner – that control over shock transfer is what keeps the contact patch working, which is where the actual grip and stability through a stage come from. The valving in this kit reflects settings XYZ Racing has run in its own Tarmac Rally programme, carried over into a buyer-fitted kit rather than a one-off works setup.

Fitment for the Byd 海豹 SEAL 4WD (2023-2026)

This kit is built for the Byd 海豹 SEAL 4WD, chassis code BY09, covering the 2023 to 2026 model years. It’s specific to the 4WD dual-motor version of the Seal – confirm your car’s drivetrain variant before ordering, as coilover geometry differs between the 4WD and any single-motor Seal variant.

What buyers also search for

• Byd 海豹 SEAL 4WD suspension upgrade built for tarmac rally and closed-stage road use.
• Byd Seal 4WD coilover damping that holds its settings over repeated broken-tarmac stage sections.
• Tarmac Rally coilover fitment for the BY09 chassis, covering 2023 to 2026 Byd Seal 4WD cars.
• Byd Seal 4WD ride height and stance set up for stage driving rather than daily commuting.

If you’re building the 海豹 SEAL 4WD for closed-stage tarmac work, configure your Tarmac Rally spec below.