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Porsche Panamera Big Brake Kit Upgrade / TTSPORT Classic 8703

by LinLynn 16 Jul 2026

The Porsche Panamera does the 0-60 sprint about as well as any four-door on the road, but the source case makes a fair point: getting to 100 km/h fast is only half the equation. Hauling it back down to zero, repeatedly, without the pedal going soft, is the part that actually separates a fun car from a fast one. This install swaps in a matched front and rear TTSPORT big brake kit to close that gap.

Porsche Panamera exterior before TTSPORT big brake kit installation

The Panamera's rounded, panel-clean nose and four-door GT layout hide a lot of mass behind those factory 20-inch wheels — mass that stock brakes have to manage lap after lap, stop after stop.

Vehicle & Kit Specs

This is a full axle-to-axle upgrade: a six-piston front kit and a four-piston rear kit, both built as a matched, one-piece caliper set rather than two unrelated parts bolted on separately.

Item Specification
Vehicle Porsche Panamera, factory 20-inch wheels
Front caliper TTSPORT TT8703 six-piston caliper (front axle)
Front rotor TTSPORT 405x34mm Dacromet-coated curved-vane rotor
Rear caliper TTSPORT TT8903 four-piston caliper (rear axle)
Rear rotor TTSPORT 380x32mm Dacromet-coated curved-vane rotor
Kit design Front and rear calipers engineered as a matched set for a coordinated, one-piece install
TTSPORT TT8703 six-piston caliper and 405mm rotor for Porsche Panamera

Both rotors get a Dacromet coating, an anti-corrosion treatment that keeps the friction face cleaner over time, plus a curved-vane face design that helps sweep debris and boosts contact between rotor and pad.

Why It Works

  • Bigger rotors (405mm front, 380mm rear) carry more thermal mass than the factory discs, which helps resist fade when the Panamera is worked hard through repeated stops rather than a single panic brake.
  • The curved-vane rotor face increases the contact area and cleanliness between pad and disc, which the source ties directly to more usable friction and stronger, more consistent braking.
  • Front and rear calipers were sized to fit behind the Panamera's factory 20-inch wheels, so the whole kit installs as a coordinated axle-to-axle upgrade rather than a front-only patch.

Installation Gallery

What wheel size does this TTSPORT big brake kit fit on the Porsche Panamera?
This build was installed on a Porsche Panamera running the factory 20-inch wheels, with the TTSPORT kit sized to clear them.
What's included in the front and rear TTSPORT kits for the Panamera?
The front kit uses a TTSPORT TT8703 six-piston caliper with a 405x34mm Dacromet-coated curved-vane rotor. The rear kit uses a TTSPORT TT8903 four-piston caliper with a 380x32mm Dacromet-coated curved-vane rotor.

Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.

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