GAC GAC Empow Big Brake Kit Upgrade / TTSPORT Slim SL6
The GAC Trumpchi Empow built a following as an affordable, sharp-handling hot hatch — some owners even nicknamed it the "AMG Empow" for its styling. But the factory brakes never lived up to the rest of the car. The calipers wear cosmetic covers that look the part, yet under hard driving or a panic stop, the stock system runs out of clamping force fast. This case swaps in a TTSPORT SL6 six-piston front kit built to fit directly behind the car's stock 18-inch wheels.
The Empow's factory brake covers dress up the wheel well but don't add real stopping power. Owners consistently point to the same weak spot: brake performance that doesn't match the car's handling or its "sport compact" image.
The Problem: Looks the Part, Doesn't Stop Like It
The Empow's factory calipers come dressed up with covers, but the hardware underneath is basic and undersized for the way owners actually drive the car. In repeated hard stops or aggressive back-road driving, brake fade and a soft pedal show up quickly — a classic sign of a stock system that's maxed out on both clamping force and heat capacity.
The fix needed to solve the real problem — insufficient clamping force and heat capacity — without forcing a wheel change or spacers. That's what led to the TTSPORT SL6 six-piston kit, sized specifically for the Empow's factory 18-inch wheel.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | GAC Trumpchi Empow, factory 18-inch wheels |
| Front caliper | TTSPORT SL6 forged six-piston caliper |
| Front rotor | TTSPORT 355mm high-carbon rotor |
| Bracket | Custom vehicle-specific mounting bracket |
| Pads / lines | TTSPORT high-performance brake pads, stainless steel brake lines |
| Hardware | Brake fluid, mounting bolts, and fasteners |
Below is the official TTSPORT SL6 spec sheet for the caliper used in this build.
| Brake Caliper | |
|---|---|
| Series | Slim Series |
| Model / Application | SL6 |
| Axle Position | Front |
| Piston Count | 6-piston |
| Piston Type | One-piece heat-insulated pistons |
| Piston Diameter | 28 mm × 2 / 30 mm × 2 / 36 mm × 2 |
| Caliper Dimensions | L 350 mm × W 135 mm × H 120 mm |
| Total Piston Area | 46.8 cm² per caliper, all pistons combined |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 3.60 kg per caliper, without pads |
| Surface Finish | High-temperature gloss coating |
| Recommended Wheel Size | 17 in or larger |
| Recommended Rotor Size | Ø330–355 mm × 28 mm |
| Fitment & Installation | |
| Minimum Spoke Clearance (mm) | 82 |
| Caliper Mounting Type | Radial mount with vehicle-specific caliper brackets |
| Brake Line Fitting Type | Vehicle-specific fittings; caliper-side and chassis-side fittings vary by application |
Why It Works
- Six pistons across a two-piece forged aluminum body spread clamping force more evenly across the pad than a factory single- or dual-piston caliper, cutting the flex that causes a soft, sinking pedal.
- The 355mm rotor puts more swept area and mass in contact with the pad, so it absorbs and sheds heat faster — the direct fix for the fade that shows up on repeated hard stops.
- One-piece heat-insulated pistons help block heat transfer from the pad back into the brake fluid, protecting pedal feel when things get hot.
- The custom bracket and caliper geometry were sized for the Empow's stock 18-inch wheel, so the kit installs without spacers or a wheel change.
Installation Gallery
FAQ
Does the TTSPORT SL6 kit fit behind the Empow's stock 18-inch wheels?
What does the TTSPORT SL6 big brake kit for the Empow include?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.