Infiniti Q50L Big Brake Kit Upgrade / TTSPORT Classic 5410
The Infiniti Q50L pairs its "breakthrough aesthetics" styling with a turbocharged four-cylinder that puts out 211 PS (155 kW) and 350 N·m of torque — enough motivation that the factory brakes were left playing catch-up. This build swaps in a TTSPORT Classic 5410 forged four-piston caliper kit to give the car a pedal that matches its powertrain.
Where a previous TT5410 install on a MG6 went with an eye-catching red finish, this Q50L keeps things low-key with a metallic-finish caliper — same hardware underneath, different personality on the outside.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | Infiniti Q50L, turbocharged 2.0L inline-four (211 PS / 155 kW, 350 N·m), 18-inch wheels |
| Front caliper | TTSPORT 5410 forged four-piston caliper, metallic finish |
| Front rotor | TTSPORT 355mm x 32mm high-carbon, heat-treated, cross-drilled rotor |
| Brake lines | TTSPORT stainless steel brake lines |
Here's the full technical spec sheet for the forged caliper at the heart of this kit:
| Brake Caliper | |
|---|---|
| Series | Classic Series |
| Model / Application | 5440 |
| Axle Position | Front |
| Piston Count | 4-piston |
| Piston Type | Star-profile racing pistons without dust boots |
| Piston Diameter | 38 mm × 2 / 41 mm × 2 |
| Caliper Dimensions | L 276 mm × W 138 mm × H 80 mm |
| Total Piston Area | 49.1 cm² per caliper, all pistons combined |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 2.65 kg per caliper, without pads |
| Surface Finish | High-temperature gloss coating |
| Recommended Wheel Size | 17 in or larger |
| Recommended Rotor Size | Ø330–345 mm × 28 mm |
| Fitment & Installation | |
| Minimum Spoke Clearance (mm) | 86 |
| 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
A forged caliper body starts out stiffer than a cast one, which means less flex under load and a firmer, more predictable pedal. The star-profile racing pistons push more evenly on the pads and react faster to input, and the lighter forged construction trims weight at the corner — less unsprung mass for the suspension to manage.
- Two-piece forged aluminum caliper body for added rigidity over the factory unit
- 355mm x 32mm high-carbon, heat-treated rotor with cross-drilled holes to promote airflow and cooling under repeated braking
- Clears the car's 18-inch wheels with the caliper's open design leaving room for heat to escape
The rotor's cross-drilled pattern and the caliper's open spoke area both work toward the same goal: keeping temperatures down so the brakes hold up under repeated hard stops instead of fading.
Installation Gallery
FAQ
What wheel size does the TTSPORT 5410 kit fit on the Infiniti Q50L?
What's included in the TT5410 kit used on this Q50L?
Why choose a forged caliper over the factory unit?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.