2025 D1 Grand Prix Dongguang | Why 1 in 4 Pro D1GP Cars Run TTSPORT Brakes
D1 Grand Prix is the absolute pinnacle of professional drifting. In this arena, tire smoke is thicker than fog, and cars dance sideways at over 100mph, inches apart. Split-second control isn't a luxury; it is the difference between the podium and the wall.
In professional drifting, there is no room for "maybe." Your equipment must perform under the most extreme abuse imaginable. That is why the statistics from the recent D1GP China season finale in Dongguan are so telling: 13 out of the 54 competing pro cars were running TTSPORT brake systems.
That means nearly 25% of the entire grid trusted TTSPORT to control their chase runs. This isn't marketing fluff; it is track-proven engineering validated by the best drivers in the region.
The Pro Drifter's Choice: Solving the "Dual Caliper" Headache
Why did so many teams switch to TTSPORT? The answer lies in how we solved the biggest problem in drift car engineering: the rear handbrake setup.
Traditionally, installing a hydro-handbrake meant welding on heavy, complex "dual-caliper brackets" to fit two separate calipers on the rear knuckle. This adds massive unsprung weight, complicates brake bias, and often results in a mushy pedal feel because the calipers flex against the bracket.
The Solution: The DR4+2 Dual-Circuit Caliper
The majority of these 13 D1 cars utilize our revolutionary DR4+2. It looks like a single monoblock caliper, but it houses two completely independent hydraulic circuits:
- Circuit A (4 Pistons): Dedicated to the Hydro-Handbrake. It delivers instant, aggressive lock-up with minimal lever pull.
- Circuit B (2 Pistons): Dedicated to the Footbrake. It allows for precise trail-braking and line adjustments.
- Zero Interference: Because the fluid paths are isolated, pulling the handbrake has zero effect on your footbrake pedal. The pedal remains rock solid.
The Proof is in the Paddock
Statistics are one thing, but seeing is believing. Here is a look at the machinery relying on TTSPORT technology to compete at the highest level.
SMA & DRS Drift Team (Running DR6 Front / DR4+2 Rear)
1087X Drift Team (Running DR4+2 Rear Setup)
Independent & Supported Teams
Drifting Setup FAQ
1. Do I need two separate master cylinders for the DR4+2?
Yes, but not in the way you might think. Your standard car master cylinder connects to the "footbrake" ports (the 2-piston circuit). Your aftermarket hydraulic handbrake lever connects to the "handbrake" ports (the 4-piston circuit). They are fluidically separated, which is why the system is so safe and reliable.
2. Why use 4 pistons for the handbrake and only 2 for the footbrake?
In drifting, locking the rear wheels instantly at 100mph requires immense torque—hence the 4 pistons. Conversely, the footbrake is used for "trail braking" to adjust the car's angle and speed. A 2-piston setup provides the linear, modulated feel needed for that precision control without accidental locking.
3. Can I run this setup on a street car?
The DR4+2 is a competition-focused caliper. While it can be driven on the street, it is designed for vehicles equipped with a hydraulic handbrake. For street cars that need to retain a factory Mechanical or Electric Parking Brake (EPB), we recommend our ES4 (Evolution Series) rear kits.
Trust Earned, Not Bought
The D1GP season might be over, but this is just the beginning. We're taking this race-proven technology and putting it into every kit we build.