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).

Kit Freni a 4 Pistoni per Ruota Anteriore Serie Classica 5420

$960.00 USD
$960.00 USD

Blocco di testo

Shipping costs not included

Colore del Calibro: Colore Standard (Come Mostrato nell'Immagine)
Dimensione del rotore: 286x24mm (Cerchio ≥ 15″)
Materiale e design del rotore: Acciaio - Curvo con Scanalature
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.

Kit Freni a 4 Pistoni per Ruota Anteriore Serie Classica 5420

$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).

Kit Freni a 4 Pistoni per Ruota Anteriore Serie Classica 5420

$960.00
Colore del Calibro: Colore Standard (Come Mostrato nell'Immagine)
Dimensione del rotore: 286x24mm (Cerchio ≥ 15″)
Materiale e design del rotore: Acciaio - Curvo con Scanalature
specifiche

5420 Forged 4-Piston Caliper

Transform the braking on your compact vehicle with the 5420 small four-piston caliper, specifically engineered to fit 15-16 inch wheels. Crafted from two pieces of high-strength, CNC-machined forged aerospace aluminum, it offers superior strength, safety, and vibration reduction compared to standard cast calipers. This lightweight design significantly reduces unsprung weight, leading to a noticeable improvement in braking response.

Inside, staggered-size pistons engage progressively to deliver a smooth, linear pedal feel, giving you precise control in all braking situations.

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 Fitment Check

Step 1: A diagram showing a minimum 15-inch wheel requirement for the 5420 caliper.
Step 1: Confirm Wheel Size (15" or larger)
Step 2: A diagram illustrating caliper-to-spoke clearance measurement.
Step 2: Check Spoke Clearance (Min. 92 mm)
Step 3: An icon representing vehicle model confirmation from a list.
Step 3: Verify Your Vehicle Model

Vehicle Compatibility

Don't see your car? This list is always growing. If your vehicle isn't shown, contact us with your details (year/make/model, wheel specs) and we'll confirm fitment for you.

Frequently Asked Questions

Is the 5420 a good upgrade for my compact car?
Absolutely. The 5420 is specifically designed for lighter vehicles with smaller wheels (15-16"). It provides a massive improvement in braking force, heat management, and pedal feel compared to the typical single-piston sliding calipers found on most compact cars.
What's included in a complete 5420 brake kit?
A complete front axle upgrade, including: 2 × 5420 Calipers, 2 × Two-Piece Brake Rotors, 1 × Set of Brake Pads, 2 × Caliper Brackets, and 2 × Stainless Braided Brake Hoses.
Avviso

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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