BYD Song Big Brake Kit Upgrade / TTSPORT Classic 8611

The BYD Song is quick for a mid-size SUV — the plug-in hybrid version pairs a 1.5T engine with front and rear electric motors for all-wheel drive and a claimed 0-60 mph time around 4.9 seconds. Stock brakes on a vehicle that moves like that are the weak link, so the owner had the factory setup swapped for a TTSPORT TT8611 forged six-piston big brake kit — a budget-friendly kit that still delivers real caliper rigidity and rotor mass.

The build kept the factory 18-inch wheels — no spacers, no wheel swap. The TT8611 caliper was specifically engineered to be thin enough to clear common 17-inch-and-up factory wheel designs, which is exactly what made this fitment possible.

Vehicle & Kit Specs

Why It Works

A forged fixed six-piston caliper doesn't flex under load the way a factory sliding caliper can, so pedal effort translates more directly into clamping force instead of getting absorbed by caliper deflection. TTSPORT built the TT8611 specifically to be light and thin — 2.1 kg — while keeping that fixed, multi-piston layout, which is why it clears 17-inch-and-up wheels without spacers.

• Larger 355x28mm rotor adds swept area and thermal mass versus the stock disc, which helps resist fade under repeated hard stops.
• 650°C heat treatment reduces the rotor's tendency to warp or expand at high temperature, keeping pedal feel consistent stop after stop.
• Caliper geometry was sized around common 17"+ wheel spoke clearances, so the factory 18-inch wheels on this Song went right back on.

Case Gallery: Before and After

The factory setup on this BYD Song used a small, solid rotor with a smooth, unvented friction surface — no cross-drilling, no venting, and less swept area than the TTSPORT disc. That combination limits heat dissipation and friction under hard or repeated braking. Side by side, the difference in rotor diameter and design is obvious once the TT8611 kit goes on.

FAQ