Toyota Alphard Big Brake Kit Upgrade / TTSPORT Classic 8703

The Toyota Alphard is a full-size MPV that people wait in line — and pay a premium — to buy, thanks to its road presence and cabin refinement. But a heavy, well-equipped MPV puts real demand on its brakes, and the factory setup on this Alphard wasn't keeping up with how the owner wanted to drive it. The fix: a TTSPORT TT8703 six-piston big brake kit up front, paired with a 380mm rotor and stainless lines, installed behind the car's stock 19-inch wheels.

The Alphard's boxy, chrome-heavy front end and split-headlamp layout give it a lot of curb presence — but that squared-off body also means more weight for the brakes to manage. This build upgrades the front axle to a TTSPORT TT8703 six-piston caliper matched to a 380x34mm high-carbon, heat-treated curved-vane rotor.

Vehicle & Kit Specs

The kit list is straightforward: TT8703 six-piston caliper, 380x34mm rotor, and stainless steel brake lines up front. Nothing exotic — just a caliper, rotor, and line combination sized to work with the Alphard's stock 19-inch wheels.

Why It Works

• One-piece cast aluminum-alloy caliper body resists outward flex under hard braking, so clamping force stays consistent instead of bleeding away into caliper deflection.
• The 380x34mm rotor's extra diameter and thickness give the system more thermal mass, which helps manage heat during repeated, heavy braking in a vehicle this size.
• TTSPORT ceramic pads are matched to the caliper and rotor to balance noise, dust, and stopping power for street use rather than chasing outright bite at the expense of daily livability.
• The caliper and rotor package was fitted and confirmed behind the Alphard's stock 19-inch wheels with no spacers needed.

Installation Gallery