Honda Accord Big Brake Kit Upgrade / TTSPORT Slim SL6
The Honda Accord has built its reputation on comfort and reliability, not on brake feel — the soft, long-travel pedal that makes daily driving relaxed is the same trait that leaves owners wanting more bite under hard braking or repeated stops. This case swaps the factory single-piston front setup for a TTSPORT Slim Series SL6 six-piston kit, built to bolt in behind the Accord's stock 17-18 inch wheels without a flange or wheel change.
The Fitment Challenge
Upgrading to a multi-piston caliper is the usual answer to a soft brake pedal, but it typically forces a compromise: bigger calipers mean bigger rotors, and bigger rotors often mean new wheels or spacers to clear the spokes. That adds cost and complexity most Accord owners aren't looking for. TTSPORT developed the Slim Series specifically to remove that trade-off — a six-piston caliper sized to clear 17-18 inch factory wheels on more than 90% of applicable vehicles.
A big six-piston caliper doesn't have to mean a big compromise. The SL6's compact envelope was drawn around the Accord's stock wheel spokes, so the upgrade is fitment-first rather than fitment-optional.
Vehicle & Kit Specs
Here's the hardware that went on this Accord's front axle:
| Item | Specification |
|---|---|
| Vehicle | Honda Accord, 18-inch factory wheels |
| Front caliper | TTSPORT SL6 forged six-piston caliper |
| Front rotor | TTSPORT 345mm high-carbon rotor |
| Bracket | Custom vehicle-specific caliper bracket |
| Pads / lines | TTSPORT high-performance brake pads, stainless steel brake lines |
| Hardware | Brake fluid, mounting bolts and fasteners |
The full technical breakdown of the SL6 caliper used in this build is below.
| 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
- Progressive six-piston layout: the graduated bore diameters (28mm/30mm/36mm) give a linear, comfortable initial bite that firms up under harder pedal pressure, instead of the flat, soft response typical of a single-piston OEM caliper.
- Forged two-piece aluminum body: reinforcing ribs add rigidity so the caliper resists flex under load, which is what keeps the pedal feeling firm and consistent rather than mushy.
- One-piece heat-insulated pistons and high-temp seals: they hold clamping force more consistently as brake temperatures climb during repeated hard stops.
- Compact 350mm x 135mm x 120mm footprint: sized to clear the Accord's factory 17-18 inch wheel spokes with no spacers, so the caliper looks proportionate and fills the wheel well without forcing a wheel change.
Installation Gallery
FAQ
Does the TTSPORT SL6 kit fit the Honda Accord's factory wheels?
What's included in the Accord's SL6 big brake kit?
What wheel size is recommended for the SL6 caliper?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.