Xiaomi SU7 Ultra Big Brake Kit Upgrade / TTSPORT Racing Series TR65
TTSPORT's D3-21 booth is a fixture at GT Show, known for show cars, live demos, and new hardware. This year the lineup included a modified Xiaomi SU7 Ultra from Guangzhou Minzhong and three new front calipers — the TR65 circuit caliper, the DR6 drift caliper, and the SL8 slim-body caliper — all making their public debut on the show floor.
The Show Car: A Modified Xiaomi SU7 Ultra
Guangzhou Minzhong, a performance shop, picked up its own SU7 Ultra and brought a modified example to the booth as a real-world look at how an EV performance sedan gets set up. The recap doesn't break down the exact caliper package fitted to the car, but the build sat right next to TTSPORT's newest racing hardware — a pairing meant to get people talking about brake upgrades on new-energy performance cars.
Vehicle & Kit Specs
The booth's centerpiece was the SU7 Ultra, but the real news was three new front calipers TTSPORT rolled out for 2025 Q2. Here's the quick rundown, followed by the full spec sheet for each.
| Item | Specification |
|---|---|
| Show vehicle | Xiaomi SU7 Ultra, modified for display by Guangzhou Minzhong (exact brake hardware not detailed in this recap) |
| TR65 | TTSPORT Racing Series — Circuit, front 6-piston monoblock forged caliper |
| DR6 | TTSPORT Racing Series — Drift, front 6-piston two-piece forged caliper |
| SL8 | TTSPORT Slim Series, front 8-piston caliper built for OEM-wheel fitment |
Full specifications for the TR65 track caliper:
| Brake Caliper | |
|---|---|
| Series | Racing Series — Circuit |
| Model / Application | TR65 |
| Axle Position | Front |
| Piston Count | 6-piston |
| Piston Type | Racing pistons without dust boots |
| Piston Diameter | 27 mm × 2, 32 mm × 2, 38 mm × 2 |
| Caliper Dimensions | 292 × 182.3 × 79.3 mm |
| Total Piston Area | 50.10 cm² per caliper, all pistons combined |
| Manufacturing Process | Monoblock forged aluminum body |
| Net Weight | 3.05 kg per caliper, without pads |
| Surface Finish | Nickel-plated |
| Recommended Wheel Size | 18 in or larger |
| Recommended Rotor Size | Ø355–390 mm × 36 mm |
| Fitment & Installation | |
| 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 |
The DR6 is the new front half of TTSPORT's drift setup; full specifications below:
| Brake Caliper | |
|---|---|
| Series | Racing Series — Drift |
| Model / Application | DR6 |
| Axle Position | Front |
| Piston Count | 6-piston |
| Piston Type | Racing pistons without dust boots |
| Piston Diameter | 27 mm × 2 / 32 mm × 2 / 38 mm × 2 |
| Caliper Dimensions | L 266 mm × W 138 mm × H 73.5 mm |
| Total Piston Area | 50.2 cm² per caliper, all pistons combined |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 2.50 kg per caliper, without pads |
| Surface Finish | Nickel-plated |
| Recommended Wheel Size | 17 in or larger |
| Recommended Rotor Size | Ø330–355 mm × 12 mm |
| Fitment & Installation | |
| 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 |
The SL8 targets 19–20 inch factory wheels; full specifications below:
| Brake Caliper | |
|---|---|
| Series | Slim Series |
| Model / Application | SL8 |
| Axle Position | Front |
| Piston Count | 8-piston |
| Piston Type | One-piece heat-insulated pistons with dust boots |
| Piston Diameter | 28 mm × 4 / 32 mm × 4 |
| Caliper Dimensions | L 391 mm × W 128 mm × H 144 mm |
| Total Piston Area | 56.8 cm² per caliper, all pistons combined |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 5.20 kg per caliper, without pads |
| Surface Finish | High-temperature gloss coating |
| Recommended Wheel Size | 19 in or larger |
| Recommended Rotor Size | Ø380–405 mm × 34 mm |
| Fitment & Installation | |
| Minimum Spoke Clearance (mm) | 90 |
| 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: Track Grip, Drift Control, and OEM-Wheel Fit
TR65: built for repeated hard stops
A monoblock forged body flexes less than a stock caliper under hard, repeated braking, which keeps pad-to-rotor contact consistent lap after lap instead of fading as the caliper heats up. Racing pistons without dust boots shed heat faster too, which is why TTSPORT positions the TR65 for sustained circuit driving rather than casual street use.
DR6: a front half for the drift combo
Drift setups usually focus on the rear caliper for lockup precision, but front braking sets up the entry into the corner. Pairing the new front DR6 with TTSPORT's existing rear 4+2-piston dual-circuit drift caliper gives a car strong braking on entry and precise lockup at the rear — the combination TTSPORT says makes the drift line more repeatable.
SL8: bigger brakes, stock wheels
Because the SL8 clears more than 90% of factory 19–20 inch wheel designs, a car can step up to an eight-piston caliper and a larger rotor without needing flange spacers to push the wheel out. That keeps the wheel's original offset and geometry intact while still adding pad area and heat capacity over the factory setup.
- TR65 — monoblock forged, front 6-piston, no dust boots, built for circuit driving
- DR6 — front 6-piston partner for TTSPORT's rear dual-circuit drift caliper
- SL8 — 8-piston caliper that clears over 90% of OEM 19–20 in wheels
GT Show Installation Gallery
FAQ
What is the TTSPORT TR65?
How does the DR6 pair with TTSPORT's drift caliper setup?
Will the SL8 fit factory wheels without spacers?
What brake hardware is on the Xiaomi SU7 Ultra show car?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.