Wilwood 120-16463 XRZ4R Radial Mount Caliper Left 4 Pistons
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Wilwood 120-16463 XRZ4R Radial Mount Caliper Left 4 Pistons
XRZ4R Radial Mount
Wilwood’s next-generation XRZero race calipers combine decades of race experience, computer finite element analysis (FEA), and state-of-the-art machining into a race caliper that is lighter and stiffer, with zero drag. The unique shape of the high surface area body creates a caliper with superior brake fluid cooling and allows more airflow through the rotor. Optimized profile high-temperature seals provide better piston retraction resulting in less drag. The unique center X-bridge strengthens the caliper body without adding mass or obstructing airflow to the brake rotor or pads. Computer FEA design and precision CNC machining of the stress-flow forged aluminum body results in a caliper weighing just 4.66 pounds - 1/2 pound less than a comparable sized Wilwood Superlite caliper.
The innovative complex shape of the body removes unnecessary bulk, improves brake and fluid cooling, and actually decreases deflection. Four Thermlock® thermal barrier pistons reduce heat transfer to the brake fluid, and the staggered bore size front calipers provide more even engagement with improved pad wear. Hard-anodized inside the piston bores and on the surface with Type III aluminum-oxide ceramic finish for durability and equipped with single-point bleed technology and low-profile bleed screws for easy serviceability. No-bind pad retaining pins (spare included) hold your choice of multiple 0.80” thick Wilwood race compound brake pads for extended service life.
Pistons | |
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Piston Count | 4 |
Piston Area (in²) | 5.18 |
Piston Type | Thermlock |
Dust Boot | No |
Rotor Dimensions | |
Rotor Width (in) | 0.81 |
Rotor Diameter(in) | 14.00 |
Pad Dimensions | |
Pad Area (in²) | 8.2 |
Pad Volume (in³) | 4.9 |
Duty Rating & Material | |
Material | Forged Aluminium |
Weight(Lbs) | 5.2 |
Colors & Finish | |
Color | Anodize |
Finish | Type III Anodize |
Mounting | |
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Mount Center(in) | 5.98 |
Mount Position | |
Mount Side | Left Hand |
Mount Type | Radial |
Rotor Compatibility | |
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Rotor Width (in) | 0.81 |
Maximum Rotor Width (in) | 0.90 |
Minimum Rotor Width (in) | 0.75 |
Maximum Rotor Diameter(in) | 14.00 |
Minimum Rotor Diameter(in) | 11.75 |
Piston Specifications | |
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Piston 1 Bore (in) | 1.88 |
Piston 2 Bore (in) | 1.75 |
Piston 3 Bore (in) | |
Total Piston Area (in²) | 5.18 |
Více informací
Výrobce | Wilwood |
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