Complete TTSPORT DRT4+4 rear wheel drift brake kit, showing the two 4-piston forged calipers, slotted 2-piece rotor, performance pads, and steel-braided brake lines.
Close-up of two red TTSPORT 4 piston forged brake calipers for the rear wheel and a slotted 2-piece rotor.
Detailed view of the 4 racing pistons inside the two TTSPORT DRT4 drift racing forged brake calipers.
A red TTSPORT DRT4+4 4-piston brake kit is installed on the rear wheel.
Unboxing the complete TTSPORT DRT4+4 drift brake kit, including all components: calipers, rotors, pads, brake line, and mounting hardware.
Customization options for the TTSPORT DRT4+4 rear wheel drift brake kit, featuring available caliper colors (red, blue, green, orange), rotor designs (drilled, blank, and slotted).
Complete TTSPORT DRT4+4 rear wheel drift brake kit, showing the two 4-piston forged calipers, slotted 2-piece rotor, performance pads, and steel-braided brake lines.
Close-up of two red TTSPORT 4 piston forged brake calipers for the rear wheel and a slotted 2-piece rotor.
Detailed view of the 4 racing pistons inside the two TTSPORT DRT4 drift racing forged brake calipers.
A red TTSPORT DRT4+4 4-piston brake kit is installed on the rear wheel.
Unboxing the complete TTSPORT DRT4+4 drift brake kit, including all components: calipers, rotors, pads, brake line, and mounting hardware.
Customization options for the TTSPORT DRT4+4 rear wheel drift brake kit, featuring available caliper colors (red, blue, green, orange), rotor designs (drilled, blank, and slotted).

Racing Series DRT4+4 Rear Wheel Dual-4-Piston Drift Racing Brake Kit

$1,680.00 USD
$1,680.00 USD

Shipping costs not included

Caliper Color: Standard Color (As Shown in the Image)
Rotor Size: 325x12mm (Wheel ≥ 17″)
Rotor Material & Design: Steel - Curved Slotted
Complete TTSPORT DRT4+4 rear wheel drift brake kit, showing the two 4-piston forged calipers, slotted 2-piece rotor, performance pads, and steel-braided brake lines.

Racing Series DRT4+4 Rear Wheel Dual-4-Piston Drift Racing Brake Kit

$1,680.00
Complete TTSPORT DRT4+4 rear wheel drift brake kit, showing the two 4-piston forged calipers, slotted 2-piece rotor, performance pads, and steel-braided brake lines.
Close-up of two red TTSPORT 4 piston forged brake calipers for the rear wheel and a slotted 2-piece rotor.
Detailed view of the 4 racing pistons inside the two TTSPORT DRT4 drift racing forged brake calipers.
A red TTSPORT DRT4+4 4-piston brake kit is installed on the rear wheel.
Unboxing the complete TTSPORT DRT4+4 drift brake kit, including all components: calipers, rotors, pads, brake line, and mounting hardware.
Customization options for the TTSPORT DRT4+4 rear wheel drift brake kit, featuring available caliper colors (red, blue, green, orange), rotor designs (drilled, blank, and slotted).

Racing Series DRT4+4 Rear Wheel Dual-4-Piston Drift Racing Brake Kit

$1,680.00
Caliper Color: Standard Color (As Shown in the Image)
Rotor Size: 325x12mm (Wheel ≥ 17″)
Rotor Material & Design: Steel - Curved Slotted
Specifications

Ultimate Control: DRT4+4 Dual-Caliper Rear Drift System

For professional drift applications where there is no room for compromise, the DRT4+4 dual-caliper system delivers the ultimate level of control and reliability. This is our premier rear brake solution, featuring two independent, ultra-lightweight 4-piston calipers per wheel: one dedicated exclusively to the hydraulic handbrake, the other to the foot brake.

This true dual-caliper setup completely isolates the hydraulic circuits, providing maximum, instantaneous locking power from the handbrake without affecting the foot brake's pedal feel or the car's overall brake bias. Paired with a thin, solid rotor for the sharpest thermal response and lowest possible rotational mass, the DRT4+4 provides the surgical precision required to dominate the competition. Each kit is a fully bespoke system, custom-engineered for your specific application.

Technical Specifications

Caliper System (2 Calipers per Side)
Series Racing Series - Drift Racing
Model DRT4+4
Mounting Position Rear
Number of Pistons 4 (Handbrake) + 4 (Foot Brake)
Piston Type Racing Pistons without Dust Boots
Piston Diameter 35 mm × 8 (total)
Dimensions (Single Caliper) L 178 × W 82 × H 106.5 mm
Total Piston Area 38.46 cm² per caliper
Manufacturing Process Two-Piece Forged
Net Weight (Single Caliper) 1.41 kg (without pad)
Surface Finish High-Temperature Gloss Coating
Recommended Wheel Size 17″ or larger
Brake Rotor
Material Heat-Treated High Carbon Steel
Dimensions ⌀325 mm × 12 mm
Construction 2-Piece Rotor
Vented / Solid Solid
Floating / Fixed Fixed
Directional Yes
Design Options Curved Slotted
Brake Pad
Compatible Rotor Material Steel Rotors
Operating Temperature 0–550°C
Coefficient of Friction 0.40–0.46 μ
Brake Hose
Construction 3-Layer Reinforced
Material Inner: PTFE (Teflon); Middle: SUS304 Braided Stainless Steel; Outer: PVC Sheath
Mounting Hardware (Custom Made)
Rotor Hat Custom CNC-Machined Aerospace-Grade Aluminum Alloy
Caliper Bracket Custom CNC-Machined Dual-Caliper Bracket

Bespoke Fitment & Ordering Process

Step 1: Technical Consultation

Initiate your order by contacting our motorsports engineering team. We will conduct a detailed consultation to understand your vehicle, competition class, and specific performance requirements.

Step 2: Submit Specifications

For Factory Knuckles: Provide vehicle year, make, model, and detailed wheel specifications.

For Modified Knuckles: Provide detailed measurements, technical drawings (CAD files preferred), or high-resolution photos of the custom knuckle assembly.

Step 3: Engineering & Approval

Our engineers will design the bespoke dual-caliper mounting bracket for your application. We will provide you with the final design specifications and production timeline for your approval before manufacturing begins.

Frequently Asked Questions

What is a "dual-caliper" (4+4) system?
This professional setup uses **two separate physical calipers** on each rear wheel. One 4-piston caliper is plumbed only to the hydraulic handbrake for maximum locking force. The other 4-piston caliper is connected only to the foot brake. This complete isolation of the two systems provides ultimate control and prevents any hydraulic interference between your handbrake and foot brake.
Who is this dual-caliper kit for?
The DRT4+4 is a no-compromise solution built for **professional drift competitors** and dedicated enthusiasts who require the absolute highest level of rear brake control, consistency, and reliability under the stress of competition.
What information is required for a custom order?
For a vehicle using **factory steering knuckles**, we require the year, make, model, and detailed wheel specs. For a **fully custom or modified knuckle**, we require technical drawings, CAD models, or precise measurements of the mounting points to engineer a perfect, custom dual-caliper bracket.
Notice

Brake Kit Purchase Notice


  • Custom‑made products cannot be returned unless there is a genuine quality defect.
  • Spacer requirements vary depending on wheel design; we assist with fitment, but spacer‑related issues do not qualify for returns.

1. Disclaimer

  1. Please provide vehicle make, model year, VIN, and wheel size before ordering TTSPORT products.
  2. Confirm wheel measurements and submit photos as requested — TTSPORT is not liable for issues arising from incorrect specs.
  3. All products are inspected before shipping. Inspect upon delivery and report quality issues within 24 hours.

2. Initial Break‑In Procedure

  1. In a safe area, brake from 60 km/h to 10 km/h with moderate pressure—repeat 10 times.
  2. Drive 500–1,000 km with light to moderate usage before full braking performance. Avoid aggressive stops.
  3. Our high‑carbon steel discs have grooved, color‑treated surfaces to help quick bedding and resist corrosion.

3. Product Warranty

  • Calipers: 1‑year warranty on defects. Lifetime maintenance available (parts charged).
  • Discs & Hoses: 90‑day warranty for defects. Expected lifespan: 40,000–60,000 km.
  • Brake Pads: 90‑day coverage. Typical lifespan: 20,000–40,000 km.
  • Custom Hats/Brackets: Fit guaranteed; no warranty post-installation.

4. Usage & Maintenance

  1. Do not wash immediately after hard braking to prevent rotor warpage.
  2. Allow extra stopping distance when driving in wet conditions.
  3. If you experience unusual noise or vibration, consult your installer immediately.

Recommended service intervals:

  • Replace rotors when wear exceeds 3 mm.
  • Front pads: every 30,000 km.
  • Rear pads: every 50,000–60,000 km.
  • Brake fluid: every 40,000 km or every 2 years.

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