BYD Han Big Brake Kit Upgrade / TTSPORT Classic 8703
BYD's Han sedan pairs strong "three-electric" tech and a Mercedes/Audi-influenced design team with a brake package that hasn't kept pace: a single-piston cast-iron setup up front. This case swaps that stock caliper for a TTSPORT TT8703 six-piston big brake kit, giving the Han a braking system built to match its size and speed.
BYD is the only automaker currently holding core in-house tech across motors, motor control, and batteries — and the Han is its flagship sedan built on that foundation. But the factory brakes are basic single-piston units. This build replaces them with a TTSPORT TT8703 six-piston kit, paired with a 355x32mm high-carbon rotor and stainless lines, all fitted behind the car's 19-inch wheels.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | BYD Han, 19-inch wheels, factory single-piston cast-iron front brakes |
| Front caliper | TTSPORT TT8703 monobloc-cast six-piston caliper |
| Front rotor | 355x32mm high-carbon heat-treated curved-vane rotor |
| Lines | TTSPORT stainless steel brake lines |
The TT8703 caliper is built with a monobloc casting process — the body is machined from a single piece rather than bolted together in halves. That one-piece construction resists flex under hard braking, which is what keeps the pedal feeling firm and predictable instead of going soft under repeated stops. Its six-piston layout, sized for mid-size and larger sedans like the Han, spreads clamping force evenly across the pad for a linear, controlled pedal feel.
Why It Works
- Monobloc caliper casting cuts flex, translating pedal input directly into clamping force instead of losing it to caliper deflection.
- The 355x32mm rotor adds mass and surface area over the factory disc, giving the system more thermal capacity to resist fade during sustained braking.
- The curved-vane and drilled rotor pattern, formulated with added carbon content, helps stabilize the friction coefficient and resists the cracking that leads to warping and pedal pulsation over time.
- Stainless steel lines resist the ballooning that rubber hoses get under pressure, keeping pedal feel consistent lap after lap or stop after stop.
Installation Gallery
What does the TT8703 kit for the BYD Han include?
What brakes does the BYD Han come with from the factory?
Does the TT8703 kit fit behind the stock wheels?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.