FNSL4R rear big brake kits provide high capacity braking with contemporary styling for high performance street and show Corvettes , and all other custom built vehicles equipped with 1988-1996 C4 Corvette rear suspension. The original equipment single piston combination caliper is replaced with a high efficiency, forged aluminum narrow Superlite four-piston caliper for normal braking, and an auxiliary MC4 mechanical caliper for the parking brake. Rotor size is increased from 12.00" to 12.88", adding brake leverage and cooling capacity while complimenting the look inside custom wheel and tire upgrades.
Wilwood Engineering designs and manufactures high-performance disc brake systems. Since the company’s inception in 1977 by Bill Wood, we have developed a substantial matrix of brake components and engineering techniques that allow us to quickly and reliably create brake systems for almost any application. Our core ability is the rapid development of custom engineered brake systems using a combination of off-the-shelf and custom components. In addition to designing and manufacturing brakes for all types of competitive motor sports, Wilwood also manufactures brake systems and components for agricultural equipment, industrial applications, utility vehicles, snowmobiles, quads, motorcycles and military vehicles.
With headquarters in Camarillo, California, Wilwood employs approximately 250 people. We have on-shelf stock of more than 300 different brake calipers, 200 rotor designs, 100 master cylinder designs and a wide assortment of brackets, fittings, valves and brake lines. Our off-shelf brake calipers range in size from tiny calipers used on go-carts and light duty industrial equipment, to heavy duty original equipment brakes for the U.S. military Humvee.
Wilwood's engineering department uses the latest computer-aided design and manufacturing techniques in conjunction with finite element analysis, dynamic test and cycle test equipment, to find high-performance and reliability solutions for the most difficult braking tasks. Our extensive inventory of proprietary on-the-shelf components allow us to provide cost-effective solutions for unique brake applications.
Wilwood is ISO 9000 compliant and has extensive experience maintaining quality levels of 100ppm or less for original equipment manufacturers.
| Download Name | File Size |
| ds1247.pdf | 676.12KB |
| Make | Model | Years | Fitment Notes |
| Chevrolet | Corvette | 1988 - 1996 | For production model Corvettes, use parking brake cable kit 330-14891 and flexline kit 220-8177. For custon built vehicles using an adapted 1988-1996 rear suspension, use parking brake cable kit 330-9371 and specify the flexline length required. C-4 with Standard Brake Option, 12" Rotor Models with 12" Rotors C-4 Models with Heavy Duty Brakes with 13" Rotors |
| Details | |
| Part Type | Disc Brake Caliper / Rotor / Pad Kit |
| Kit Summary | |
| Axle Offset | 0.00 |
| Caliper Type | 4 - Black Powder Coat |
| Min Wheel Diameter Req'd* | 17 |
| Mount Type | Radial |
| Rear End Axle | OEM |
| Rotor Diameter | 12.88 |
| Kit Components & Specs / Rotors | |
| Bedded | No |
| Design Type | GT |
| Dynamically Balanced | Yes |
| Left Hand - Part No | 160-9960 |
| Material | Iron |
| Outside Diameter (in) | 12.88 |
| Right Hand - Part No | 160-9959 |
| Style | GT Slotted |
| Surface Finish | Plain |
| Type | GT 48 Curved Vane |
| Vane Count | 48 CV |
| Width (in) | 0.81 |
| Parts & Accessories / Caliper Parts | |
| Bleed Screw Kit | 220-0627 |
| Bridge Bolt Kit | 230-12489 |
| CrossOver O-Ring Kit | 130-10540 |
| O-ring Kit | 130-2579 |
| Replacement Piston 1 | 200-8439 |
| Replacement Piston 2 | 200-8439 |
| Wear Plate - Left Hand | 300-6596 |
| Wear Plate - Right Hand | 300-6595 |
| Kit Components & Specs / Rotor Hats | |
| Bolt Circle 1 | 5 X 4.50 |
| Bolt Circle 2 | 5 X 4.75 |
| Finish Color | Black E-Coat |
| Hat - Part No | 170-14268 |
| Hat Offset Dimension (in) | 1.750 |
| Material | Aluminum |
| Stud Diameter - BC 1 | 0.560 |
| Stud Diameter - BC 2 | 0.560 |
| Stud Diameter - BC 3 | 0.000 |
| Type | Big Brake Hat - Flared Bell |
| Parts & Accessories / Hat | |
| Bolt Kit | 230-8008 |
| Kit Components & Specs / Calipers | |
| Brake Pad Area (In²) | 8.2 |
| Brake Pad Plate | 7416 |
| Brake Pad Volume (In³) | 3.8 |
| Finish Color | Black Powder Coat |
| Left Hand - Part No | 120-11876-BK |
| Mount Type | Radial |
| Pad Compound | BP-20 |
| Piston 1 Bore (in) | 1.12 |
| Piston 2 Bore (in) | 1.12 |
| Piston Area (In²) | 1.98 |
| Piston Count | 4 |
| Piston Type | Stainless |
| Right Hand - Part No | 120-11876-BK |
| Type | Forged Narrow Superlite 4R |
| Parts & Accessories / Brake Lines | |
| Front Line Kit | 220-8177 |
| Parking Brake Cable | 330-14891 |
