
The 海豹 SEAL 4WD carries its dual-motor powertrain and floor-mounted battery pack as static mass the BY09 platform’s factory dampers were never speced to control once the road turns to gravel. That extra weight sits low, which helps on tarmac, but on loose surfaces it multiplies the load through every compression and rebound cycle, and standard-spec suspension folds under it fast.
XYZ Racing’s Pro Rally coilover is built for exactly that scenario: top-flight rally competition rather than a fast road or track-day brief. It’s the spec for a Seal 4WD that’s being pointed at stages, not supermarket car parks, where suspension has to survive repeated hard landings without losing damping consistency.
What this coilover does for your 2023-2026 Byd 海豹 SEAL 4WD
Fitted to the BY09 chassis, this kit gives you the ride height and damping range to set the car up for the surface in front of you rather than a compromise setting for everything. Rally-specific valving controls the rate at which the heavy dual-motor chassis loads and unloads through compressions and crests, holding the wheel to the ground instead of letting the extra battery mass pitch the car forward under braking into a turn. Ride height adjustment lets you build in the clearance a gravel or snow stage demands without giving up the geometry the front and rear motors need to put power down cleanly. The result is a Seal 4WD that changes direction and absorbs impacts predictably at rally pace, where a factory-damped EV saloon would simply run out of control at the first big compression.
About the Pro Rally coilover
XYZ Racing builds its gravel and snow rally suspension as two distinct configurations rather than one generic off-road coilover. The first bolts straight into the original chassis mounting points, aimed at drivers running a car that’s still substantially standard beneath the bodywork. The second is built for a car whose body and mounting structure have already been modified for competition, and is set up to work with that reinforced hardware rather than around it. Both share the same rally-focused damping philosophy – suspension that’s tuned to take repeated hard hits over broken and unpredictable surfaces rather than the smooth, consistent inputs of a circuit. For the Seal 4WD, that distinction matters: which version suits your car depends on how far the build has already gone from standard.
Fitment for the Byd 海豹 SEAL 4WD (2023-2026)
This kit is built for the BY09-chassis 海豹 SEAL 4WD produced across the 2023-2026 model years, matched to the dual-motor drivetrain’s mounting points front and rear. Confirm your car sits within this chassis code and year span before ordering, and check which of the two Pro Rally configurations matches how much of your bodyshell has already been modified for competition use.
What buyers also search for
- Byd Seal 4WD rally suspension for gravel and snow stages
- BY09 chassis coilover setup for competition use
- Pro Rally damping for a heavy dual-motor EV platform
- Byd Seal ride height adjustment for stage clearance
- XYZ Racing coilover options for modified Byd Seal 4WD builds
Two build paths, one rally-proven damping approach – pick your spec below to match your Seal 4WD’s current stage of build.
1. Be installed directly with the original chassis. (Amateur type)
2. Be installed after modifying the car body. (Professional type)
Top mounts included with your kit
Every XYZ Racing coilover kit ships with the upper mounts listed below for your exact chassis — no extra parts to source.
Front
AluminiumAAluminium upper mount — a stiff, lightweight housing that locates the damper precisely and resists flex under load.
Rear
OE (factory) mountOERetains the OEM (factory) upper mount — preserves the original ride comfort, noise and vibration behaviour for a stock-like feel.
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Super SportXYZ Racing Super Sport Coilovers — BYD SEAL 4WD 2023-2026
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Top SportXYZ Racing Top Sport Coilovers — BYD SEAL 4WD 2023-2026
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Tarmac RallyXYZ Racing Tarmac Rally Coilovers — BYD SEAL 4WD 2023-2026
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Street AdvancedXYZ Racing Street Advanced Coilovers — BYD SEAL 4WD 2023-2026
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