Forged 4-Piston Caliper
Two-piece forged aluminum body keeps caliper deflection low under high line pressure, so pedal travel stays short and predictable lap after lap.
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Classic Series · Front Axle · 4-Piston
The TTSPORT Classic 5440 is a front-axle 4-piston big brake kit built for drivers who want stronger initial bite, firmer pedal feel, and repeatable stopping power under heavy or repeated use. Two-piece forged aluminum calipers, staggered 38/41 mm pistons, and two-piece vented iron rotors work together to raise thermal capacity and tighten modulation versus an undersized factory setup.
Two-piece forged aluminum body keeps caliper deflection low under high line pressure, so pedal travel stays short and predictable lap after lap.
38 mm × 2 leading and 41 mm × 2 trailing pistons load the pad evenly across the rotor face, reducing taper wear and helping bite stay consistent as the pad heats up.
Heat-treated high-carbon iron, internally vented, in Ø330 or Ø345 mm × 28 mm. Directional left/right design with curved-slot, grain-slot, wave-slot, or drilled-and-slotted faces.
PTFE inner liner, SUS304 stainless braid, PVC outer sheath. Reduces line expansion for a firmer, more linear pedal under hard braking.
| Brake Caliper | ||
|---|---|---|
| Series | Classic Series | |
| Model / Application | 5440 | |
| Axle Position | Front | |
| Piston Count | 4-piston | |
| Piston Type | Star-profile racing pistons, no dust boots | |
| Piston Diameter | 38 mm × 2 / 41 mm × 2 | |
| Total Piston Area | 49.1 cm² per caliper (all pistons combined) | |
| Caliper Dimensions | L 276 × W 138 × H 80 mm | |
| Manufacturing Process | Two-piece forged aluminum body | |
| Net Weight | 2.65 kg per caliper (without pads) | |
| Surface Finish | High-temperature gloss coating | |
| Recommended Wheel Size | 17 in or larger | |
| Recommended Rotor Size | Ø330–345 mm × 28 mm | |
| Brake Rotor Options | ||
| Rotor Option | 330 mm Rotor | 345 mm Rotor |
| Rotor Material | Heat-treated high-carbon cast iron | Heat-treated high-carbon cast iron |
| Axle Position | Front | Front |
| Rotor Dimensions | Ø330 mm × 28 mm | Ø345 mm × 28 mm |
| Construction | Two-piece, internally vented, fixed | Two-piece, internally vented, fixed |
| Directional Design | Yes — left/right specific | Yes — left/right specific |
| Rotor Face Pattern | Curved slot / Grain slot / Wave slot / Drilled & slotted | Curved slot / Grain slot / Wave slot / Drilled & slotted |
| Brake Pads | ||
| Compatible Rotor Material | Iron / steel rotors only | |
| Operating Temperature Range | 0–600 °C | |
| Average Friction Coefficient | 0.38 (varies with temp, line pressure, rotor condition) | |
| Lines | ||
| Brake Line Construction | Three-layer construction | |
| Brake Line Material | PTFE inner / SUS304 braid / PVC outer sheath | |
| Brake Line Fittings | Vehicle-specific; caliper-side and chassis-side vary by application | |
| Brackets | ||
| Rotor Hat Manufacturing Process | CNC-machined | |
| Rotor Hat Material | High-strength aluminum alloy | |
| Caliper Bracket Manufacturing Process | CNC-machined | |
| Caliper Bracket Material | Carbon steel | |
| Caliper Mounting Type | Radial mount with vehicle-specific brackets | |
| Fitment & Installation | ||
| Minimum Spoke Clearance | 86 mm | |
| Recommended Wheel Size | 17 in or larger | |
| Rotor Diameter Selection | 330 or 345 mm, selected according to vehicle application and wheel clearance | |
| Bedding-In Procedure | Required before hard use | |
This is a performance brake system with star-profile racing pistons and no dust boots. For daily-driven cars — especially in wet, dusty, salted, or high-debris environments — inspect and clean the caliper area more frequently as part of normal maintenance.
Two Classic 5440 forged 4-piston front calipers.
Complete brake pad set for both front calipers.
Two two-piece front rotors in your selected 330 mm or 345 mm size.
Two CNC carbon-steel vehicle-specific caliper mounting brackets.
Two CNC-machined high-strength aluminum alloy rotor hats.
Two stainless braided brake hoses with vehicle-specific fittings.
Mounting hardware is included.
The 5440 caliper requires a minimum 86 mm spoke clearance and a 17-inch or larger wheel. Always verify spoke profile, barrel shape, and offset against the caliper envelope before purchase. Caliper brackets and brake-line fittings are vehicle-specific.
17-inch or larger wheels are required.
Minimum spoke clearance is 86 mm. Spoke shape and offset matter as much as diameter.
The 5440 is a platform-adapted big brake kit. Caliper brackets and brake-line fittings are built for your specific vehicle. Confirm fitment with our team before ordering.
Need a fitment confirmation for your vehicle and wheel? Send your year/make/model and wheel specs to our team before ordering.
The caliper requires a minimum 86 mm spoke clearance and a 17-inch or larger wheel. Spoke shape and offset matter as much as diameter — confirm with a clearance check or contact us with your wheel specs.
Both run 28 mm thickness. The 345 mm rotor adds thermal mass and leverage for heavier vehicles or repeated heavy braking; the 330 mm fits more wheels and is the lighter option for lighter cars.
The included pads operate from 0–600 °C with an average μ of 0.38, so they work cold on the street and continue to perform under track or canyon use. They are compatible with iron/steel rotors only.
Star-profile racing pistons reduce heat transfer into the caliper during repeated hard braking. The trade-off is more frequent caliper cleaning in wet, dusty, or salted environments.
The 5440 is a platform-adapted big brake kit. Caliper brackets and brake-line fittings are built for your specific vehicle. Confirm fitment with our team before ordering.
Yes. A proper bedding-in procedure is required to transfer pad material evenly to the rotor face and establish full bite, modulation, and fade resistance.
Send your vehicle, wheel size, and intended use. We'll confirm caliper clearance, rotor size, and bracket availability before you check out.
Brake Kits · Fitment · Installation · Care Guide
A brake kit is not just a pair of larger calipers. Calipers, rotors, pads, hoses, brackets, rotor hats, mounting hardware, brake fluid, wheel clearance, and bedding procedure all work together as one system.
This guide explains how to confirm the right TTSPORT brake kit before ordering, what to check before installation, and how to care for the system after installation.
Do not order a brake kit by vehicle name alone. The correct kit depends on the vehicle, axle position, wheel package, driving use, and brake system layout.
Brake kits are application-specific. A visually similar kit can still have the wrong rotor offset, bracket geometry, hose fitting, caliper position, or wheel clearance requirement.
Different TTSPORT brake kit series use different hardware layouts. Always confirm what the kit includes before purchase.
Use direct-mount calipers and one-piece rotors where specified. These kits do not use rotor hats or caliper brackets unless the final product page clearly states otherwise.
Use separate friction rings and rotor hats. Hat offset, ring bolt pattern, hardware style, and rotor direction must be matched correctly.
May require bespoke brackets, rotor hats, brake lines, and engineering confirmation based on knuckle, hub, wheel, and competition use.
Require extra attention to wheel clearance, tire size, vehicle load, descent control, hose routing, and dust / water exposure.
Do not assume every brake kit includes the same parts. Package contents vary by product series, vehicle application, and final order configuration.
Before finalizing the order, review the kit specification carefully. Confirm the brake kit is matched to your vehicle and wheel setup, not only to the model name.
If any part is not listed in the final order or product page, do not assume it is included.
Inspect every component before installation. Do not modify, grind, drill, stretch, force, or space brake kit components to make them fit.
Safety: Brake kits affect braking force, hydraulic sealing, heat control, wheel clearance, and vehicle stability. Do not install the kit if fitment, torque, direction, clearance, or compatibility is unclear.
Correct installation is as important as the brake kit itself. A properly engineered kit can still perform poorly if installed with dirty mounting faces, incorrect torque, poor hose routing, or trapped air in the hydraulic system.
Verify caliper centering over the rotor and confirm even pad sweep across the friction surface.
Confirm left / right rotor direction if the rotor uses directional vanes or directional face pattern.
Check brake hose length and routing at full steering lock and full suspension travel. No twisting, rubbing, stretching, or kinking.
Check caliper-to-spoke and caliper-to-barrel clearance before road use. Wheel diameter alone is not enough.
Use the correct brake fluid type and bleed the system until pedal feel is firm and consistent.
Torque all brake hardware to the specified value. Do not reuse damaged, unknown, stretched, or corroded safety-critical fasteners.
Brake pads and rotors need a controlled bedding process before full performance is available. Bedding helps create an even transfer layer on the rotor surface, improving bite, pedal consistency, and vibration resistance.
Street pads, race pads, iron rotors, two-piece rotors, and carbon ceramic rotors may require different bedding procedures. Use the procedure supplied with the specific kit.
After installation and bedding, give the system a short break-in period before aggressive use. Pedal feel, pad contact, dust output, and noise may continue to settle after the first drives.
Brake kits need regular inspection, especially after track use, off-road use, towing, mountain driving, winter salt exposure, or any brake service.
Inspect pads, rotors, fluid level, and hose condition during normal service intervals. Prioritize quiet operation, smooth pedal feel, and even wear.
Check pad thickness, rotor surface condition, and fluid condition more often. Long descents create sustained heat even without track use.
Inspect for mud, sand, stone impact, hose abrasion, dust boot damage, and caliper contamination after trail use.
Inspect pads, rotors, fluid, and hardware before and after every event. Track heat shortens service intervals.
Check rear brake temperature, hydraulic handbrake behavior, pad wear, rotor cracking, and hardware condition frequently.
Use only compatible pads and approved bedding procedures. Inspect rotor surface condition carefully and avoid incompatible friction materials.
Do not continue driving if the brake system shows any of the following symptoms. Inspect the system or contact a qualified brake technician before using the vehicle again.
Send your vehicle details, brake kit series, wheel specs, driving use, photos, and any symptoms you notice. TTSPORT will help confirm fitment, installation checks, and the correct care path for your brake kit.
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