Repeatable Lap-After-Lap Braking
Built for circuit, time-attack, drift, and rally use where pedal consistency matters from out-lap to checker.
商品詳細
xレーシングシリーズ · サーキット · フロントアクスル · 4ピストン
TR48 Front 4-Piston Big Brake Kit
A front-axle 4-piston monoblock BBK engineered for circuit, time-attack, drift, and rally use. Forged caliper, two-piece directional rotors, and a wide pad window deliver thermal repeatability and a consistent pedal from out-lap to checker.
Monoblock forged aluminum
4-piston, 38 / 41 mm
Ø355 or Ø380 mm × 32 mm
Two-piece rotors
Pads to 750 °C, Option B
SS braided lines
Why Builders Choose the TR48
The TR48 caliper body is forged from a single aluminum billet for stiffness under sustained line pressure. Four pistons, 38 mm × 2 and 41 mm × 2, generate 49.36 cm² of total clamp area per caliper, with a staggered bore layout that promotes even pad pressure distribution and a more linear bite as pad temperature climbs. Racing-spec pistons run without dust boots to clear hot brake gases on track.
モノブロック鍛造キャリパー
Forged from a single aluminum billet for stiffness under sustained line pressure.
49.36 cm² Piston Area
38 mm × 2 and 41 mm × 2 pistons generate 49.36 cm² total piston area per caliper.
Two-Piece Directional Rotors
Ø355 or Ø380 mm × 32 mm two-piece rotors with internal ventilation and left/right specific directional vanes.
Wide Pad Window
Standard 0–600 °C pads for sprint and HPDE, or Option B 0–750 °C pads for endurance heat loads and aggressive circuit work.
Race-Service Hardware
Stainless braided lines, vehicle-specific brackets, rotor hats, and required bedding instructions support a real track workflow.
技術仕様 & キットオプション
| ブレーキキャリパー | ||
|---|---|---|
| シリーズ | レーシングシリーズ — サーキット | |
| モデル / 適合 | TR48 | |
| アクスル位置 | フロント | |
| ピストン数 | 4ピストン | |
| ピストンタイプ | ダストブーツなしのレーシングピストン | |
| ピストン径 | 38 mm × 2 / 41 mm × 2 | |
| キャリパー寸法 | 258.8 mm × 157.7 mm × 75.2 mm | |
| ピストン総面積 | 49.36 cm² per caliper | |
| 製造プロセス | モノブロック鍛造アルミボディ | |
| 正味重量 | 2.36 kg per caliper, without pads | |
| 表面仕上げ | ニッケルメッキ | |
| 推奨ホイールサイズ | 18インチ以上 | |
| 推奨ローターサイズ | Ø355～380 mm × 32 mm | |
| ブレーキローターオプション | ||
| ローターオプション | スタンダード | オプションB レーシング |
| ローター素材 | 熱処理高炭素鋳鉄 | レーシンググレード熱処理高炭素鋳鉄 |
| アクスル位置 | フロント | フロント |
| ローター寸法 | Ø355 / 380 mm × 32 mm | Ø355 / 380 mm × 32 mm |
| 構造 | 2ピースローターアッセンブリ | 2ピースローターアッセンブリ |
| ベンチレーション | 内部ベンチレーション | 内部ベンチレーション |
| ローター用ハット | 車種別アルミローターキャップ | 車種別アルミローターキャップ |
| ローター取付方式 | 固定式またはフローティング式、ローターサイズと車両適用に応じて | 固定式またはフローティング式、ローターサイズと車両適用に応じて |
| 方向性設計 | はい — 左右専用 | はい — 左右専用 |
| ローター表面パターン | カーブスリット／グレインスリット／ウェーブスリット／ドリルド＆スリット | Wave slot |
| 推奨用途 | Sprint sessions, HPDE, dual-purpose street / track cars driven to events | Sustained high-temperature work, time attack, endurance racing |
| ブレーキパッドオプション | ||
| パッドオプション | スタンダード | オプションB レーシング |
| 対応ローター材質 | アイアン／スチールローター専用 | アイアン／スチールローター専用 |
| 作動温度 | 0～600℃ | 0–750 °C |
| 平均摩擦係数 | μ ≈ 0.38 | μ ≈ 0.45 |
| 推奨用途 | Strong sprint and HPDE compound | Built for endurance heat loads and aggressive circuit work |
| ライン、ブラケット＆サービス | ||
| ブレーキライン構造 | 3層強化構造 | |
| ブレーキライン材質 | PTFE inner liner / SUS304 braid / PVC outer sheath | |
| キャリパー取付 | 車両専用キャリパーブラケットによるラジアルマウント | |
| キャリパーブラケット | Vehicle-specific caliper brackets | |
| ブレーキラインフィッティング | Vehicle-specific, caliper-side and chassis-side vary | |
| ホイールクリアランス | Minimum 18 in wheels; final clearance depends on wheel barrel, spoke geometry, rotor size, and bracket package | |
| ベッドイン（慣らし）手順 | 必須 | |
Friction values vary with temperature, line pressure, and rotor condition. Choose the compound that matches your session length and chassis weight. Pads on this platform are designed for iron / steel rotor faces only. Do not use carbon-ceramic-only compounds.
同梱品リスト
キャリパー×2
2 × TR48 front monoblock forged 4-piston calipers with nickel-plated finish.
ブレーキパッド
Brake pads for both front calipers, selected from standard 0–600 °C or Option B 0–750 °C pad window.
ブレーキローター×2
2 × two-piece internally vented front rotors, Ø355 or Ø380 mm × 32 mm, left/right specific.
キャリパーブラケット×2
Vehicle-specific radial caliper brackets for correct front caliper alignment.
ローター用ハット×2
フロントハブ位置とローターオフセットに適合するアプリケーション専用アルミ製ローターキャップ。
ブレーキホース×2
Stainless braided front brake lines with PTFE inner liner, SUS304 braid, and PVC outer sheath.
ビスポークエンジニアリングプロセス
Every TR48 front circuit racing system is engineered around the vehicle’s front knuckle, hub location, rotor hat offset, wheel barrel, spoke clearance, brake line routing, front brake bias target, and intended motorsport use. The goal is not a generic universal fit; the goal is a front brake package that works with your chassis geometry and gives the driver repeatable pedal behavior from out-lap to checker.
1. 技術相談
We review the chassis, front suspension and knuckle setup, motorsport use, target front brake behavior, wheel package, tire compound, rear brake pairing, ABS / proportioning strategy, and whether the car uses OEM or custom front uprights.
2. データの提出
For OEM knuckles, provide year, make, model, trim, current wheel size, intended use, and detailed wheel specifications. For custom uprights, motorsport hub conversions, or non-OE rotor offsets, provide CAD files, technical drawings, hub-face data, rotor mounting dimensions, or accurate bracket mounting-point measurements.
3. エンジニアリングレビュー & 承認
TTSPORT confirms rotor size, caliper clearance, vehicle-specific caliper bracket geometry, rotor hat offset, brake line fittings, pad compound, and required fitment details before production begins.
If you are unsure whether your wheel, front knuckle, rotor offset, brake balance target, or brake line routing is suitable, Contact us before ordering so the engineering team can review the build details.
取り付け & 慣らし運転
- TR48 uses radial-mount, vehicle-specific caliper brackets and vehicle-specific brake line fittings.
- Choose Ø355 mm × 32 mm for lighter chassis, tight tracks, 18 in wheels, and lower thermal demand.
- Choose Ø380 mm × 32 mm for heavier chassis, fast circuits, endurance use, and higher thermal headroom.
- Standard 0–600 °C pads suit sprint sessions, HPDE, and dual-purpose street / track cars driven to events.
- Option B 0–750 °C pads suit sustained high-temperature work, time attack, and endurance racing.
- A proper bed-in cycle transfers an even layer of pad material onto the rotor face, sets initial friction, and prevents uneven deposits, vibration, and judder.
- Complete the included bedding procedure before your first hard session.
よくあるご質問
What is the TR48 designed for?
The TR48 is a front-axle 4-piston monoblock big brake kit built for circuit, time-attack, drift, and rally use. It targets thermal repeatability lap after lap, a stable pedal under load, and predictable brake balance when paired with a matched rear setup.
Which rotor size and pad compound should I choose?
Choose Ø355 mm × 32 mm for lighter cars, tight tracks, and 18 in wheels, or Ø380 mm × 32 mm for heavier chassis, fast circuits, and endurance heat loads. The standard pad runs 0–600 °C with avg μ 0.38; the racing-steel option runs 0–750 °C with avg μ 0.45 for sustained high-temp work.
What wheel clearance does the kit need?
Minimum 18 in wheels are required. Caliper envelope is 258.8 mm × 157.7 mm × 75.2 mm. Wheel barrel and spoke geometry vary, so confirm clearance against the caliper profile before ordering, especially with 380 mm rotors.
Are the rotors two-piece, and are they directional?
Yes. Rotors are two-piece assemblies, internally vented, with left/right specific directional vanes. Mounting is fixed or floating depending on rotor size and vehicle application. Face options include curved slot, grain slot, wave slot, and drilled-and-slotted; the racing-steel option ships wave slot.
ベッドイン（慣らし）作業は必要ですか？
Yes. A proper bed-in cycle is required to transfer pad material evenly to the rotor face, set initial friction, and prevent uneven deposits or judder. Follow the included procedure before any hard track sessions.
Can I get this kit for my specific vehicle?
Yes. The TR48 uses radial-mount, vehicle-specific caliper brackets and vehicle-specific brake line fittings. Send your year, make, model, trim, and wheel spec through our contact page and we will confirm the correct bracket, rotor size, and line kit.
Spec your TR48 build
Send your year, make, model, trim, current wheel size, and intended use. We will confirm rotor size, bracket geometry, line fittings, and pad compound for your application.
ケアガイド
xBrake Kits · Fitment · Installation · Care Guide
Brake Kit 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.
1. Before Ordering: Confirm the Full Vehicle Setup
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.
- Vehicle year, make, model, trim, market version, and chassis code if available
- Front or rear axle position
- Current brake rotor diameter, thickness, and caliper type if known
- Wheel diameter, width, offset, spoke shape, and inner barrel clearance
- Tire size and vehicle weight changes from armor, cargo, towing equipment, or track setup
- Driving use: daily street, towing, mountain driving, off-road, HPDE, rally, drift, track, or competition
- Whether the vehicle uses electronic parking brake, brake pad wear sensors, ABS / ESC systems, or special hydraulic routing
Wheel Clearance & Data Disclaimer: Technical fitment data applies strictly to rotor hats and mounting brackets—not wheel geometry. Wheel compatibility specs are provided for general reference only. Insufficient wheel clearance is not covered under warranty or data accuracy claims; if clearance is insufficient, wheel spacers must be added at the customer's discretion.
2. Understand What Type of Brake Kit You Are Ordering
Different TTSPORT brake kit series use different hardware layouts. Always confirm what the kit includes before purchase.
Direct-Mount Kits
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.
Two-Piece Rotor Kits
Use separate friction rings and rotor hats. Hat offset, ring bolt pattern, hardware style, and rotor direction must be matched correctly.
Racing / Custom Kits
May require bespoke brackets, rotor hats, brake lines, and engineering confirmation based on knuckle, hub, wheel, and competition use.
Off-Road / Heavy Vehicle Kits
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.
3. Confirm the Kit Specification Before Payment
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.
- Confirm vehicle application and axle position
- Confirm caliper model, piston count, and caliper color if applicable
- Confirm rotor diameter, rotor thickness, rotor construction, and left / right direction if applicable
- Confirm brake pad compound and intended use
- Confirm brake hose fitting type and routing compatibility
- Confirm whether caliper brackets, rotor hats, mounting hardware, wear sensors, or brake fluid are included
- Confirm minimum wheel diameter and spoke clearance requirement
- Confirm lead time, shipping method, and final invoice details
If any part is not listed in the final order or product page, do not assume it is included.
4. Before Installation: Inspect the Complete Kit
Inspect every component before installation. Do not modify, grind, drill, stretch, force, or space brake kit components to make them fit.
- Check all received parts against the order confirmation
- Inspect calipers, rotors, brackets, hats, hoses, pads, and hardware for shipping damage
- Confirm left / right caliper and rotor orientation where applicable
- Confirm rotor size, pad shape, hose fittings, bracket layout, and hardware style before installation
- Clean all mounting faces before assembly
- Confirm torque values, bedding procedure, fluid type, and bleeding procedure before starting work
- Use a qualified brake technician for installation
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.
5. Installation Checks
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.
Caliper Position
Verify caliper centering over the rotor and confirm even pad sweep across the friction surface.
Rotor Orientation
Confirm left / right rotor direction if the rotor uses directional vanes or directional face pattern.
Brake Hose Routing
Check brake hose length and routing at full steering lock and full suspension travel. No twisting, rubbing, stretching, or kinking.
Wheel Clearance
Check caliper-to-spoke and caliper-to-barrel clearance before road use. Wheel specs are for general estimation only—clearance issues are excluded from warranty/data claims and may require user-supplied wheel spacers.
Brake Fluid & Bleeding
Use the correct brake fluid type and bleed the system until pedal feel is firm and consistent.
Hardware Security
Torque all brake hardware to the specified value. Do not reuse damaged, unknown, stretched, or corroded safety-critical fasteners.
6. Bedding and First Heat Cycle
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.
- Follow the bedding procedure supplied with the exact pad and rotor compound
- Use moderate heat first unless the supplied procedure requires otherwise
- Do not start with emergency stops on a fresh pad / rotor setup
- Avoid holding the brake pedal while stopped on very hot pads and rotors
- Allow the brakes to cool after bedding
- After the first heat cycle, inspect pad contact, rotor surface, hose routing, hardware security, and fluid leaks
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.
7. Initial Break-In Period
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.
- Avoid repeated emergency stops unless required for safety
- Avoid hard track use until bedding and inspection are complete
- Monitor pedal feel, vibration, noise, smell, and rotor surface appearance
- Recheck for fluid leaks after the first road test
- Recheck torque where the kit instructions require post-heat-cycle inspection
- Contact TTSPORT if brake feel changes suddenly after installation
8. Routine Care and Inspection
Brake kits need regular inspection, especially after track use, off-road use, towing, mountain driving, winter salt exposure, or any brake service.
- Inspect brake pads for uneven wear, taper, glazing, cracking, or backing-plate damage
- Inspect rotors for cracks, heavy scoring, hot spots, minimum thickness, and runout
- Inspect calipers for fluid seepage, piston movement, dust boot damage, and uneven pad retraction
- Inspect brake hoses for rubbing, cuts, swelling, leaks, and fitting corrosion
- Inspect brackets, rotor hats, and mounting hardware for cracks, fretting, corrosion, or loosening
- Check brake fluid level, color, service age, and boiling-point suitability for your driving use
- Clean brake dust from wheels and calipers regularly, especially after wet, salty, or track conditions
9. Care by Use Case
Daily Street
Inspect pads, rotors, fluid level, and hose condition during normal service intervals. Prioritize quiet operation, smooth pedal feel, and even wear.
Towing & Mountain Roads
Check pad thickness, rotor surface condition, and fluid condition more often. Long descents create sustained heat even without track use.
Off-Road
Inspect for mud, sand, stone impact, hose abrasion, dust boot damage, and caliper contamination after trail use.
Track / HPDE
Inspect pads, rotors, fluid, and hardware before and after every event. Track heat shortens service intervals.
Drift / Competition
Check rear brake temperature, hydraulic handbrake behavior, pad wear, rotor cracking, and hardware condition frequently.
Carbon Ceramic
Use only compatible pads and approved bedding procedures. Inspect rotor surface condition carefully and avoid incompatible friction materials.
10. Stop Driving If You Notice These Symptoms
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.
- Soft pedal, sinking pedal, or sudden increase in pedal travel
- Brake fluid leak or wetness near a line, caliper, fitting, or master cylinder
- Grinding, scraping, severe vibration, or heavy brake judder
- Vehicle pulling strongly to one side under braking
- Burning smell after light driving
- Loose wheel, rotor, caliper, bracket, or hardware noise
- Brake warning light, ABS warning light, or traction-control fault after brake work
Need help confirming brake kit setup or care?
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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