Wilwood Narrow Superlite 4R Rear Kit 12.88in Drilled 2008-2012 Subaru WRX w/Lines

Forged Narrow Superlite 4R four piston calipers are combined with BP-10 compound pads and 12.88” rotors in this group of big brake kits for custom high performance street and show machines. This group of specialized kits for Import Cars retain full use of the OE parking brake, master cylinder output, and ABS where used. FNSL4R rear kits provide complimentary style and performance with 13” and larger front brake upgrades in conjunction with wheel, tire, and suspension upgrades. Optional caliper finishes and rotor designs enable the builder to match style and performance on all applications.

Product Overview

Forged Narrow Superlite 4R four piston calipers are combined with BP-10 compound pads and 12.88" rotors in this group of big brake kits for custom high performance street and show machines. This group of specialized kits for Import Cars retain full use of the OE parking brake, master cylinder output, and ABS where used. FNSL4R rear kits provide complimentary style and performance with 13" and larger front brake upgrades in conjunction with wheel, tire, and suspension upgrades. Optional caliper finishes and rotor designs enable the builder to match style and performance on all applications.

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Details

Reference Information

12.88x.81 REAR MT W/LINES DRILL 2 BX KIT

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