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A21-3502050
HongPro
A21-3502050
Crafted from premium aluminum alloy via advanced forging 工艺，this brake caliper delivers exceptional strength and lightweight performance. Featuring a 4-piston design, it ensures even pressure distribution for consistent stopping power and reduced pad wear. Equipped with internal cooling structures, it minimizes heat fade, maintaining reliability under extreme conditions. It meets OE standards and holds relevant certifications, guaranteeing a perfect fit and long-term durability.
Crafted from high-grade 6061-T6 aluminum alloy via precision cold-forging, this brake caliper boasts 30% higher tensile strength (up to 310 MPa) than standard cast alternatives. The material’s inherent corrosion resistance, paired with a multi-layer ceramic coating, ensures it withstands 500+ hours of salt-spray testing—exceeding industry standards by 20%. This combination guarantees long-term performance even in harsh weather or road conditions, reducing replacement frequency for end-users.
Each brake caliper undergoes 12+ quality checks, including dimensional testing with a CNC coordinate measuring machine (CMM) for ±0.02mm accuracy—matching OE specifications 1:1. We’ve validated fitment via 500+ real-vehicle installation tests, ensuring no modifications are needed during assembly. As an OE-equivalent component, it directly replaces original parts, eliminating compatibility issues and saving maintenance time for mechanics.
Integrated with a dual-channel internal cooling system, this brake caliper reduces operating temperature by up to 45℃ during continuous heavy braking (tested at 60km/h repeated stop scenarios). The optimized fin structure increases heat dissipation area by 35% compared to conventional designs, effectively preventing brake fade— a common cause of reduced stopping power. This feature is critical for maintaining safety during high-load or long-distance driving.
Our brake calipers are certified by ISO 9001, IATF 16949, and ECE R90—global benchmarks for automotive safety and quality. Each unit is 100% pressure-tested (at 1000 PSI) to ensure zero leakage, with a defect rate kept below 0.03% over 100,000+ units produced. Backed by a 1-year warranty, we stand behind product reliability, giving customers and distributors confidence in long-term performance and after-sales support.
Featuring a 4-piston symmetric layout, the caliper distributes brake force evenly across the pad surface—reducing pad wear by 25% (based on 15,000km road tests) and ensuring consistent stopping distances. The high-quality nitrile rubber piston seals resist high temperatures (up to 220℃) and hydraulic fluid degradation, maintaining seal integrity for years. This design delivers smooth, responsive braking, enhancing both safety and driver comfort in daily or demanding driving situations.
| Parameter Category | Item | Specification |
| Core Material | Body Material | 6061-T6 Aluminum Alloy (Tensile Strength: 310 MPa; Yield Strength: 276 MPa) |
| Piston Material | High-Grade Aluminum (Hardness: 10-12 HRC) | |
| Seal Material | Nitrile Rubber (Temperature Resistance: -40℃ to 220℃; Oil Resistance: ISO 7628) | |
| Dimensional Details | Caliper Body Length | 185 ± 0.5 mm |
| Caliper Body Width | 112 ± 0.5 mm | |
| Caliper Body Height | 168 ± 0.5 mm | |
| Piston Diameter | 42 mm (±0.02 mm) | |
| Mounting Hole Spacing | 80 mm (Center-to-Center, ±0.1 mm) | |
| Performance Metrics | Operating Temperature Range | -40℃ to 300℃ |
| Maximum Operating Pressure | 1,200 PSI (8.27 MPa) | |
| Heat Dissipation Efficiency | Reduces temperature by 45℃ during continuous braking (60km/h repeated stops) | |
| Salt-Spray Resistance | ≥500 Hours (ASTM B117 Standard, No Red Rust) | |
| Quality & Certification | Certifications | ISO 9001, IATF 16949, ECE R90 |
| Pressure Test Standard | 1,000 PSI (6.89 MPa) for 5 Minutes, Zero Leakage | |
| Defect Rate | ≤0.03% (Based on 100,000+ Units Produced) | |
| Warranty Period | 1 Year | |
| Installation & Compatibility | OE Equivalence | 1:1 Match with OE Dimensions (CNC CMM Test: ±0.02 mm Accuracy) |
| Mounting Type | Bolt-On (Hardware Included: M10×25 Hex Bolts, Torque Spec: 28 N·m) | |
| Brake Pad Compatibility | Standard 140×60×18 mm Brake Pads (Semi-Metallic/Ceramic) |
Here are specific application scenarios of brake caliper:
Ideal for frequent stop-and-go urban driving. Its 45℃ temperature reduction during repeated braking (60km/h stops) prevents overheating from constant traffic lights. With 25% reduced pad wear (15,000km test data), it cuts maintenance frequency for daily commuters, ensuring consistent rear braking response.
Reliable for extended highway trips. The dual-channel cooling system maintains rear brake efficiency even after hours of high-speed driving. Its 310 MPa tensile strength resists vibration from long journeys, while ECE R90 certification guarantees compliance with global safety standards for cross-region travel.
Excels in rainy, coastal, or snowy areas. ≥500 hours of salt-spray resistance (ASTM B117) protects the rear caliper from rust caused by moisture or road salt. The nitrile rubber seals (-40℃ to 220℃ tolerance) prevent fluid leakage in wet conditions, ensuring stable rear braking performance.
Suitable for light commercial vehicles (e.g., small delivery vans). Its 1,200 PSI maximum pressure handles occasional heavy loads, while the 1:1 OE fitment ensures easy replacement. Backed by a 5-year warranty, it offers long-term reliability for businesses relying on consistent rear braking.
Before installation, confirm the caliper matches OE specs (via part number check). Mount using M10×25 bolts, torque to 28 N·m (critical for safety). After fitting, bleed brake fluid to remove air (follow ISO 4970 standards) and test braking 5-8 times at low speed (≤30km/h) to ensure responsiveness. Inspect monthly for leaks; replace seals if worn to maintain 1,000 PSI pressure stability.
