Brake Balance First
2-piston, 30.95 cm² caliper area sized to complement front BBK clamp without over-braking the rear axle or triggering early lockup.
Detalhes do Produto
xRacing Series · Circuit · Rear Axle · 2-Piston
TR20 Rear 2-Piston Racing Big Brake Kit
The TR20 is a lightweight 2-piston rear racing caliper built for teams that need rear brake contribution to be consistent, measurable, and tunable. In a proper motorsport package, the rear axle is not judged by peak clamp alone — it has to support the front, hold bias, and keep the pad compound window usable across a full session.
Built around a two-piece forged aluminum body and racing pistons without dust boots, the TR20 is engineered for track, drift, rally, and endurance use where thermal repeatability and pedal consistency matter over repeated high-energy stops. Each kit is built through a vehicle-specific workflow so rear bias, rotor package, bracket geometry, brake line routing, and wheel clearance are confirmed before production.
Why Builders Choose the TR20
Rear-Axle Control
Built to support the front brake package, hold bias, and keep rear contribution predictable through a full session.
Repetibilidade Térmica
Ø330 mm × 25 mm two-piece vented rotor with directional vane pattern keeps stop-to-stop temperatures predictable through a session.
Janela de Pastilhas de Competição
Open piston design without dust boots supports race pad operating ranges up to 600 °C standard or 750 °C with the Option B compound.
Serviceability
Two-piece forged construction, replaceable rotor rings, and standard race-pad shapes shorten paddock turnaround between sessions.
Engenharia específica para o veículo
Rear bias, rotor package, bracket geometry, brake line routing, and wheel clearance are confirmed before production.
Especificações Técnicas & Opções de Kit
| Pinça de travão | ||
|---|---|---|
| Série | Racing Series — Circuit | |
| Modelo / Aplicação | TR20 | |
| Posição no Eixo | Traseira | |
| Número de Pistões | 2-piston | |
| Tipo de Pistão | Pistões de competição sem foles de proteção contra pó | |
| Diâmetro do Pistão | 44.4 mm × 2 | |
| Dimensões da Pinça | 182.3 mm × 148 mm × 71.6 mm | |
| Área Total dos Pistões | 30.95 cm² per caliper, all pistons combined | |
| Processo de Fabrico | Corpo de alumínio forjado em duas peças | |
| Peso Líquido | 1.73 kg per caliper, without pads | |
| Acabamento de Superfície | Niquelado | |
| Custom Color | Not available on this caliper line | |
| Tamanho de jante recomendado | 17 pol. ou superior | |
| Tamanho do disco recomendado | Ø330 mm × 25 mm | |
| Opções de discos de travão | ||
| Opção de disco | Standard | Option B |
| Material do disco | Ferro fundido de alto carbono tratado termicamente | Racing-grade heat-treated high-carbon cast iron |
| Posição no Eixo | Traseira | Traseira |
| Dimensões do disco | Ø330 mm × 25 mm | Ø330 mm × 25 mm |
| Construção | Conjunto de disco de duas peças | Conjunto de disco de duas peças |
| Ventilação | Ventilado internamente | Ventilado internamente |
| Campânulas dos discos | Application-specific alloy rotor hats | Application-specific alloy rotor hats |
| Montagem do disco | Fixo ou flutuante, consoante o tamanho do disco e a aplicação do veículo | Fixo ou flutuante, consoante o tamanho do disco e a aplicação do veículo |
| Design direcional | Sim — específico para esquerda/direita | Sim — específico para esquerda/direita |
| Padrão da face do disco | Curved slotted / Grain Slot / Wave Slot / Drilled and slotted | Ranhura Ondulada |
| Utilização recomendada | Steel rotor build for circuit, drift, rally, and endurance rear-axle control | Racing steel rotor build for higher peak energy events and heavier rear brake use |
| Opções de pastilhas de travão | ||
| Opção de pastilha | Standard | Option B |
| Material do disco compatível | Apenas discos de ferro / aço | Apenas discos de ferro / aço |
| Intervalo de temperatura de funcionamento | 0–600 °C | 0–750 °C |
| Coeficiente de atrito médio | μ ≈ 0.38; varies with temperature, line pressure, and rotor condition | μ ≈ 0.45; varies with temperature, line pressure, and rotor condition |
| Utilização recomendada | Track, drift, rally, and rear brake contribution in balanced motorsport packages | Endurance, downhill rally stages, heavy drift entries, and higher peak energy events |
| Linhas, Suportes e Manutenção | ||
| Construção da mangueira de travão | Construção reforçada de três camadas | |
| Material da mangueira de travão | Revestimento interior em PTFE / malha de aço inoxidável SUS304 / bainha exterior protetora em PVC | |
| Fixação da pinça | Montagem radial com suportes de pinça específicos para o veículo | |
| Suportes das pinças | Vehicle-specific radial caliper brackets confirmed during the build workflow | |
| Campânulas dos discos | Application-specific alloy rotor hats matched to rear hub geometry and rotor offset | |
| Racores da mangueira de travão | Específico para cada veículo; os racores do lado da pinça e do lado do chassis variam consoante a aplicação | |
| Folga da Roda | 17 in wheels or larger; spoke profile is verified before production for race wheel sets | |
| Substituição do Rotor | Two-piece rotor design allows friction ring replacement while retaining the alloy hat when serviceable | |
| Procedimento de Assentamento | Required before pushing the system to race pace | |
Option B is intended for higher peak energy events — endurance, downhill rally stages, or heavy drift entries — where the standard pad would push past its window. Caliper finish is nickel-plated; color customization is not available on this caliper line.
Conteúdo da embalagem
Pinças ×2
2 × TR20 rear two-piece forged 2-piston calipers with nickel-plated finish.
Pastilhas de travão
Brake pads for both rear calipers, selected from Standard 0–600 °C or Option B 0–750 °C compound.
Discos de travão ×2
2 × two-piece internally vented rear rotors, Ø330 mm × 25 mm, left/right specific.
Suportes de pinça ×2
Vehicle-specific radial caliper brackets for correct rear caliper position and alignment.
Campânulas de disco ×2
Application-specific alloy rotor hats matched to rear hub location and rotor offset.
Tubos flexíveis de travão ×2
Three-layer stainless-steel braided rear brake lines with PTFE inner liner, SUS304 stainless-steel braid, and PVC protective outer sheath.
O Processo de Engenharia à Medida
Every TR20 rear racing system is engineered around the vehicle’s rear knuckle, hub location, rotor hat offset, wheel barrel, spoke clearance, brake line routing, front BBK pairing, rear bias target, axle role, and intended motorsport use. The goal is not a generic universal fit; the goal is a rear brake package that supports the front axle, holds bias, and gives the driver repeatable pedal behavior across a full session.
1. Consultoria Técnica
We review the vehicle, rear suspension and knuckle setup, axle role, current front brake setup, target bias, competition use, wheel package, tire compound, and whether the car uses OEM or custom rear uprights.
2. Submissão de Dados
For OEM knuckles, provide vehicle details, current front brake setup, wheel size, wheel specs, and intended use. For custom rear uprights, provide CAD files, technical drawings, hub-face data, rotor mounting dimensions, or accurate bracket mounting-point measurements.
3. Revisão e Aprovação de Engenharia
A TTSPORT confirma o objetivo de repartição traseira, a opção de disco, o composto das pastilhas, a geometria do suporte de pinça específico do veículo, o deslocamento do cogumelo do disco, o encaminhamento das linhas de travão e a folga da roda antes de a configuração ser lançada.
Se não tiver a certeza de que a sua roda, manga de eixo traseira, emparelhamento com BBK dianteiro, deslocamento do disco, encaminhamento das linhas de travão ou objetivo de repartição traseira são adequados, Contacte-nos antes de encomendar, para que a equipa de engenharia possa analisar os detalhes da configuração.
Instalação e Rodagem
- Confirme o veículo, a função do eixo e o emparelhamento com o BBK dianteiro para o objetivo de repartição traseira.
- Verifique a compatibilidade de rodas de 17 polegadas ou maiores e a folga dos raios em relação à envolvente da pinça TR20.
- Fixe a geometria do suporte, o deslocamento do disco e o encaminhamento das linhas de travão antes da produção.
- Os kits traseiros TR20 são enviados com suportes de pinça específicos do veículo, cogumelos de disco e linhas traseiras trançadas.
- Utilize a especificação padrão de pastilhas e discos para uma contribuição traseira equilibrada em configurações de circuito, drift, rali e resistência.
- Utilize a Opção B para eventos de maior energia de pico, nos quais o conjunto de travão traseiro é sujeito a calor sustentado.
- É necessário um procedimento de rodagem adequado para assentar a camada de transferência das pastilhas antes de levar o sistema ao ritmo de corrida.
Perguntas Frequentes
O TR20 é uma pinça dianteira ou traseira?
O TR20 é uma pinça traseira dedicada — uma plataforma de 2 pistões e 30,95 cm² dimensionada para equilibrar um BBK dianteiro maior sem provocar travagem excessiva no eixo traseiro.
Que tamanho de disco utiliza?
Ø330 mm × 25 mm, duas peças, ventilado internamente, direcional específico para esquerda/direita. Disponível com aço de alto carbono padrão ou aço tratado termicamente de grau de competição.
Qual é a diferença entre a pastilha padrão e a pastilha Opção B?
A pastilha padrão opera entre 0–600 °C com μ ≈ 0,38. A Opção B amplia a janela para 0–750 °C com μ ≈ 0,45 para provas de resistência, rali e utilização intensiva em drift.
Vai passar nas minhas jantes?
São necessárias jantes de 17 polegadas ou maiores. O perfil dos raios é verificado face ao envelope da pinça durante o fluxo de construção antes do início da produção.
Posso alterar a cor da pinça?
Não. O TR20 é fornecido com revestimento niquelado e a personalização de cor não é oferecida nesta linha de competição.
É necessário fazer o assentamento?
Sim. É necessário um procedimento de acamamento adequado para assentar a camada de transferência da pastilha antes de levar o sistema ao ritmo de competição.
Configure o seu kit traseiro TR20
Envie o seu veículo, a configuração atual dos travões dianteiros, o tamanho das jantes e a utilização pretendida. A nossa equipa de engenharia confirmará a opção de disco, o composto da pastilha, o conjunto de suportes, o offset da campânula do disco, o encaminhamento das tubagens de travão e a folga das jantes antes de a construção ser autorizada.
Guia de Cuidados
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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