Complete TTSPORT 5420S front wheel big brake kit, showing the 4-piston forged calipers, slotted 2-piece floating rotor, performance pads, and steel-braided brake lines.
Close-up of a red TTSPORT 5420S 4-piston forged brake caliper for the front wheel and a slotted 2-piece floating rotor.
Detailed view of the 4 pistons with dust boot inside a TTSPORT 5420S forged brake caliper.
A red TTSPORT 5420S 4-piston big brake kit is installed on the 15" front wheel.
Unboxing the complete TTSPORT 5420S performance big brake kit, including all components: calipers, rotors, pads, brake line, and mounting hardware.
Customization options for the TTSPORT 5420S brake kit, featuring available caliper colors (red, blue, green, orange), rotor designs (drilled and slotted).
Complete TTSPORT 5420S front wheel big brake kit, showing the 4-piston forged calipers, slotted 2-piece floating rotor, performance pads, and steel-braided brake lines.
Close-up of a red TTSPORT 5420S 4-piston forged brake caliper for the front wheel and a slotted 2-piece floating rotor.
Detailed view of the 4 pistons with dust boot inside a TTSPORT 5420S forged brake caliper.
A red TTSPORT 5420S 4-piston big brake kit is installed on the 15" front wheel.
Unboxing the complete TTSPORT 5420S performance big brake kit, including all components: calipers, rotors, pads, brake line, and mounting hardware.
Customization options for the TTSPORT 5420S brake kit, featuring available caliper colors (red, blue, green, orange), rotor designs (drilled and slotted).

Classic Series 5420 Front Wheel 4-Pistons Brake Kit

$960.00 USD
$960.00 USD

Shipping costs not included

Caliper Color: Standard Color (As Shown in the Image)
Rotor Size: 286x24mm (Wheel ≥ 15″)
Rotor Material & Design: Steel - Curved Slotted
Complete TTSPORT 5420S front wheel big brake kit, showing the 4-piston forged calipers, slotted 2-piece floating rotor, performance pads, and steel-braided brake lines.

Classic Series 5420 Front Wheel 4-Pistons Brake Kit

$960.00
Complete TTSPORT 5420S front wheel big brake kit, showing the 4-piston forged calipers, slotted 2-piece floating rotor, performance pads, and steel-braided brake lines.
Close-up of a red TTSPORT 5420S 4-piston forged brake caliper for the front wheel and a slotted 2-piece floating rotor.
Detailed view of the 4 pistons with dust boot inside a TTSPORT 5420S forged brake caliper.
A red TTSPORT 5420S 4-piston big brake kit is installed on the 15" front wheel.
Unboxing the complete TTSPORT 5420S performance big brake kit, including all components: calipers, rotors, pads, brake line, and mounting hardware.
Customization options for the TTSPORT 5420S brake kit, featuring available caliper colors (red, blue, green, orange), rotor designs (drilled and slotted).

Classic Series 5420 Front Wheel 4-Pistons Brake Kit

$960.00
Caliper Color: Standard Color (As Shown in the Image)
Rotor Size: 286x24mm (Wheel ≥ 15″)
Rotor Material & Design: Steel - Curved Slotted
Specifications

The Compact Powerhouse: 5420 Forged 4-Piston Caliper

Unlock the hidden performance in your compact car with the 5420 big brake kit. Specifically engineered to fit smaller 15-16" wheels, this is the bolt-on upgrade you've been looking for. We craft each caliper from high-strength forged aluminum, making it significantly stronger and lighter than your mushy, cast iron stock calipers.

The result is a huge improvement in stopping power and a firm, responsive pedal that gives you total control. By reducing critical unsprung weight, the 5420 also sharpens your car's handling and makes it feel more agile. It’s the perfect, high-value first step into the world of performance braking.

Technical Specifications

Caliper
Series Classic Series
Model 5420
Mounting Position Front
Number of Pistons 4
Piston Type Two-Piece Vented Pistons with Dust Boots
Piston Diameter 38 mm × 4
Dimensions L 233 × W 177 × H 76 mm
Total Piston Area 45.36 cm²
Manufacturing Process Two-Piece Forged
Net Weight 2.10 kg (single caliper without pad)
Surface Finish High-Temperature Gloss Coating
Recommended Wheel Size 15″ or larger
Recommended Rotor Size ⌀286–295 mm / Thickness 24 mm
Brake Rotor
Material Heat-Treated High Carbon Steel
Dimensions ⌀286 / 295 mm × 24 mm
Construction 2-Piece Rotor
Vented / Solid Vented
Floating / Fixed Fixed
Directional Yes
Design Options Curved Slotted / GrainSlot / WaveSlot / Drilled & 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
Rotor Hat CNC-Machined Aerospace-Grade Aluminum Alloy
Caliper Bracket CNC-Machined Carbon Steel

3-Step Pre-Fitment Check

Step 1: Illustration showing 5420 big brake kit requires 15-inch or larger wheels.
Step 1: Verify Wheel Size (15" Minimum)
Step 2: Diagram showing how to measure caliper to wheel spoke clearance, minimum 92mm required for 5420 kit.
Step 2: Check Spoke Clearance (Min. 92 mm)
Step 3: Icon representing checking your vehicle's compatibility from a verified list.
Step 3: Confirm Your Vehicle Model Below

Vehicle Compatibility

Don't See Your Model? Our application list is constantly expanding. If your vehicle isn't on the list, just reach out! Provide your year, make, model, and wheel specs, and our team will confirm fitment options for you.

Frequently Asked Questions

Is the 5420 a good upgrade for my compact car?
Absolutely. The 5420 is engineered specifically for lighter vehicles with smaller 15-16" wheels. It provides a night-and-day improvement in braking force, heat resistance, and pedal feel compared to the weak, single-piston sliding calipers that come from the factory on most compact cars.
What's included in the complete 5420 brake kit?
This is a complete, bolt-on front axle upgrade. The kit includes:
  • 2 × 5420 Forged 4-Piston Calipers
  • 2 × Two-Piece Brake Rotors
  • 1 × Set of Performance Brake Pads
  • 2 × CNC-Machined Caliper Mounting Brackets
  • 2 × Stainless Steel Braided Brake Hoses
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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