Li Auto L9 Big Brake Kit Upgrade / TTSPORT Classic Series
The Li Auto L9 is a big, heavy three-row SUV, and a heavy vehicle asks a lot of its brakes — especially under repeated hard stops or mountain descents where the factory single- or two-piston calipers can start to feel soft and inconsistent. This case swaps the L9's stock front and rear brakes for a TTSPORT big brake kit built around a six-piston front caliper and a four-piston rear caliper, giving the whole car a matched, upgraded brake package instead of a front-only fix.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | Li Auto L9, full-size three-row SUV |
| Front caliper | TTSPORT forged fixed six-piston caliper |
| Rear caliper | TTSPORT forged fixed four-piston caliper |
| Rotors | Front and rear performance rotors sized to match the six-piston/four-piston caliper package |
| Bracket | Vehicle-specific mounting brackets for the L9's hub and knuckle geometry |
| Pads / lines | Performance brake pads and stainless steel brake lines |
| Hardware | Mounting hardware and brake fluid included |
Why It Works
- Forged fixed calipers hold their shape under load far better than a floating caliper, so pedal feel stays firm and predictable instead of getting mushy as the pads heat up.
- Going to six pistons up front and four in the rear spreads clamping force more evenly across the pad surface, which improves initial bite and how consistent the brakes feel from the top of the pedal travel to the bottom.
- Upgrading both axles together, rather than just the front, balances brake torque front-to-rear — important on a heavy three-row SUV where the rear brakes do more work than on a lighter car.
- The kit is engineered as a direct-fit, no-spacer solution, so it's designed to bolt in using the L9's factory hub and knuckle mounting points rather than requiring wheel spacers or other workarounds.
Fitment & Installation Notes
Because this is a dual-caliper kit, the install covers front and rear brackets, calipers, rotors, pads, and stainless lines together as one system rather than piecing together parts from different sources. Matching the caliper and rotor package front-to-rear also keeps braking behavior consistent between the axles, which matters for stability under hard braking in a vehicle the size and weight of the L9.
Installation Gallery
Frequently Asked Questions
What caliper setup does this TTSPORT kit use on the Li Auto L9?
Does the kit cover the whole car or just the front axle?
Need fitment confirmation? Send your vehicle, wheel size, and intended use before ordering, and we'll confirm the right TTSPORT Classic Series kit for your L9.