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Wilwood Forged Narrow Superlite 4R Big Brake rear brake kits are the engineered match for the AERO6R/ST front race kits on vehicles intended for unrestricted road race competition. All emphasis is on matched front to rear balance, high durability, and high-efficiency heat management, without adding unnecessary rotating or unsprung weight to the driveline and rear suspension. Wilwood Forged Narrow Superlite 4R Big Brake rear brake kits are championship-proven systems. Features and benefits: * FNSL4R/ST calipers use a forged aluminum body and feature a Type III Mil-Spec, medium gray color hard anodized finish that provides superior wear resistance in the piston bores, and high resistance to abrasion and corrosion throughout * Thermlock pistons are used to reduce heat transfer from the pads to increase fade resistance, and extend service life by decreasing temperatures in the caliper body, fluid, and seals * Internal damper springs and controlled retraction, high-temperature piston seals assure consistent pedal height from start to finish * Caliper piston volumes are matched for full compatibility with the OE master cylinder output and ABS controls * Calipers are also fully compatible with manual brake conversions to balance bar pedals using appropriately sized master cylinders. * Spec 37 alloy GT Series directional vane 13 in. rotors are dynamically mounted using Wilwood Dynamic Lug Mounting system to forged aluminum hats * Hats are hard anodized for superior wear resistance and extended service life at the load bearing surfaces * Mounting brackets include all premium grade fasteners and secure the calipers to the uprights in the stock location with no modifications required * High-temperature, high-friction, race compound pads selected specifically by application
Not Yet Reviewed
$2,018.21
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$2,636.11
Wilwood Forged Superlite 6R Big Brake front brake race kits are configured for unrestricted category road racing on all models of the 2000-09 Honda S2000 using 17 in. or larger diameter wheels. The 6-piston FSL6R/ST calipers used in these Big Brake kits feature a forged aluminum body with a Type III mil-spec hard anodized finish. These championship-proven kits are completed with high-temperature, high-friction, endurance race compound pads selected specifically by application, and stainless steel braided flex lines. Additional features and benefits: * Hard anodizing provides superior wear resistance in the piston bores, and high resistance to abrasion and corrosion throughout * Thermlock pistons are used to reduce heat transfer from the pads to increase fade resistance, and to extend service life by decreasing temperatures in the caliper body, fluid, and seals * Internal damper springs and controlled retraction, high-temperature piston seals assure consistent pedal height from start to finish * Caliper piston volumes are matched for full compatibility with the OE power brake booster and master cylinder, and are easily configured with manual brake conversions and balance bar pedals using appropriately sized master cylinders * Spec37 alloy GT Competition Series 12.88 in. diameter directional vane rotors are dynamically mounted to the OE hubs with weight-saving forged aluminum hats * Unsprung and rotating weight are minimized while providing high cooling efficiency and rugged durability with thermal stability in sustained high-heat competition * Mounting brackets, including all premium grade fasteners, secure the calipers to the spindles in the stock location, without the need for modifications
Not Yet Reviewed
$2,386.26
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$2,699.64
Wilwood Forged Narrow Superlite 4R Big Brake Rear Race Kits are configured for dedicated road racing on all 2001-2006 BMW E46 M3 models. They are the engineered match for the AERO6R/ST front race kits. All emphasis is on improved front to rear balance, high durability, and high efficiency heat management, without adding unnecessary rotating or unsprung weight to the driveline and rear suspension. The FNSL4R/ST calipers used in these kits feature a forged aluminum body with a Type III Mil-Spec, medium gray color, hard anodized finish. Hard anodizing provides superior wear resistance in the piston bores, and high resistance to abrasion and corrosion throughout. Thermlock pistons are used to reduce heat transfer from the pads to increase fade resistance, and extend service life by decreasing temperatures in the caliper body, fluid, and seals. Internal damper springs and controlled retraction, high-temperature piston seals assure consistent pedal height from start to finish. Caliper piston volumes are matched for full compatibility with the OE master cylinder output and ABS controls. The calipers are also fully compatible with manual brake conversions to balance bar pedals using appropriately sized master cylinders. Spec37 alloy GT competition series 12.88 in. diameter directional vane rotors are dynamically mounted to the OE hubs with weight-saving forged aluminum hats. As is with the calipers, the hats are hard anodized for superior wear resistance and extended service life at the load bearing surfaces. Further weight reduction is achieved by accommodating the elimination of the parking brake hardware. Mounting brackets, including all premium-grade fasteners, secure the calipers to the uprights in the stock location—with minor modifications to the dust shield, as illustrated in the photos on page 4 of the assembly instructions. These championship-proven systems are completed with high temperature, high friction, endurance compound race pads selected specifically by application. Stainless steel braided flexlines are included in the kit to complete the installation.
Not Yet Reviewed
$2,162.70
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$2,213.46
Wilwood Forged Superlite 4R Big Brake rear brake race kits are configured for dedicated road racing on all base, Eco-Boost, and standard production GT model 2015-18 Mustangs. They are the engineered match for the AERO6R/ST front race kits with all emphasis on matched front to rear balance, high durability, and high efficiency heat management, without adding unnecessary rotating or unsprung weight to the driveline and rear suspension. Wilwood's FSL4R/ST calipers feature a forged aluminum body with a Type III Mil-Spec, medium gray color, hard anodized finish providing superior wear resistance in the piston bores and high resistance to abrasion and corrosion throughout. They are equipped with Thermlock pistons to reduce heat transfer from the pads and increase fade resistance, as well as service life by decreasing temperatures in the caliper body, fluid, and seals. GT competition Series 36 vane 14.00 in. rotors are dynamically mounted to the OE hubs with weight saving forged aluminum hats. As is with the calipers, the hats are hard anodized for superior wear resistance and extended service life at the load bearing surfaces. Additional caliper features: * Internal damper springs and controlled retraction, high-temperature piston seals assure consistent pedal height from start to finish * Piston volumes are matched for full compatibility with the OE master cylinder output and ABS controls * Fully compatible with manual brake conversions to balance bar pedals using appropriately sized master cylinders
Not Yet Reviewed
$2,492.50
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