1970-73 Wilwood Superlite 13" Front Disc Brake Conversion Kit, GT Rotors
Wilwood Engineering

1970-73 Wilwood Superlite 13" Front Disc Brake Conversion Kit, GT Rotors

Fits 1970-73 with disc or drum brakes. Includes 13" full detail machined, asymmetrical face slotted and individual dynamic balanced rotors. Sold per kit.

Forged Superlite Big Brake Front Hat Kits are engineered for use in conjunction with OE front hubs on a variety of competition, show, custom, and sport driving applications. Forged Superlite 4 piston calipers, PolyMatrix brake pads, machined aluminum hats, and 13" GT directional vane rotors exemplify award winning style and provide the ultimate in Big Brake stopping power. Born from Wilwood's 25 year tradition of building championship brake systems, FSL Big Brake kits are the perfect compliment to wheel, tire, and suspension equipment upgrades.


Forged Superlite 4 Piston FSL Calipers

Calipers Available in Black or

Red :
Forged Billet Superlite calipers are a direct replacement for all Wilwood Superlite and similar competitive brand calipers with 3.50" centered mounting tabs. Calipers are available in the popular 1.75", 1.62", 1.38", 1.25" and 1.12" piston sizes for .81", 1.10" and 1.25" rotor widths. FSL calipers use the same 7420 and 7416 type bridge bolt brake pad used in all Superlite 6 piston calipers. The full range of PolyMatrix pad compounds is available to match brake response and heat range to any application.

The FSL body design is a highly efficient product of computer generated solid modeling and stress analysis technology. Each caliper features closed end bridges with a radial transition to the piston body housings. The elimination of machined steps and sharp shoulders in this critical area provides a measurable increase in overall body strength and resistance to deflection under load. Center bridge bolts replace cotter pins to provide additional support and allow quick access with positive brake pad retention. Clamping force, structural deflection, and volume displacement tests have proven the superior strength and efficiency of the FSL. On-track testing has proven driver satisfaction. The bottom line is better stopping power with less pedal travel.

The superior strength of this innovative new caliper is combined with proven performance features from other Wilwood designs. Each caliper is equipped with Wilwood's replaceable SRS stainless steel bridge plates. SRS plates eliminate the bridge wear caused by pad gouging and extend the service life of the caliper body. The spring-loading action of the SRS plates also eliminates pad rattle and dampens the vibration harmonics that contribute to squeal under braking. Other standard Wilwood features include high-temperature, square faced o-ring seals for positive sealing, controlled piston retraction, and long service life in high heat conditions. Stainless steel pistons are used to resist corrosion and retard heat transfer from the pads. Fluid tubes are vibration dampened to resist stress fractures and reduce damage caused by track debris. Two-piece bleed screw assemblies provide long, reliable service life and are easily replace if necessary.

The most notworthy feature of this new caliper design is the forging. Each body is stress-flow forged from premium grade aluminum alloy billets. Stress-flow forging re-aligns the metal's internal grain structure to flow within the contour of the caliper body. This process eliminates the stresses and interruptions to the internal grain structure that occur when machining a straight block billet. Simply stated, there is no better way to build a stronger aluminum caliper body.

GT Series Rotor Hats
GT aluminum hats are lightweight and strong to manage the exceptional brake torque generated by the FSL Big Brake system. The hats are specially designed for use on OE hubs without modifications or interference to the suspension or ABS components. The hats carry Wilwood's signature and a high luster black anodized finish to prevent corrosion and enhance the overall appearance of the complete package inside the wheel.

SRP or GT Series 13" Rotors
Large diameter vented iron rotors provide substantial increases in cooling and stopping power over small diameter OE rotors. All Wilwood rotors are manufactured from premium grade, long grain carbon iron to provide long wear with high thermal stability and resistance to distortion. The superior heat absorption and dissipation qualities of a directional vane iron rotor are essential to preventing heat fade and realizing the longest service life from the pads and rotors. For custom, show, and high performance sport driving, SRP rotor kits offer the high-tech look and improved performance of a directional cross-drill and face slot pattern. In addition to their aesthetic appeal, the venting and cleaning action of the holes and slots will reduce pad glaze, dissipate surface heat, and minimize irregular pad build-up on the rotor faces. The results are smoother engagement with improved consistency and response at the pedal. Each SRP rotor is treated with a black E-coat to inhibit corrosion on all areas of the rotor. . GT rotor kits feature Wilwood's ultimate competition rotor with full detail machining, asymmetrical face slotting and individual dynamic balancing. GT rotors run true and vibration free with extended rotor life and pad wear on applications subject to higher sustained operating temperatures.

Wilwood High Performance Brake Pads
Wilwood brake pads get fast response with high resistance to fade, long wear, and the low rotor abrasion that Wilwood is so well known for. Specific pad types and compounds have been selected for each application and are listed in the service parts guide for each kit.

Caliper Brackets and Hardware
Aluminum mount brackets are lightweight and strong. Each bracket is CNC machined for precise fit on each specific spindle. Grade 8 strength or higher nuts, bolts, studs, washers, and alignment shims are included with each kit.

Plumbing
Fittings and hoses for most kits must be ordered separately. A few noted kits do include stainless steel flexlines. Otherwise, hose kit part numbers can be found next to each kit in the ordering information.

NOTE:
Installation of Wilwood Disc Brake Kits may affect the wheel offset.

 
Part No. 13746
Sold As Kit
MPN 140-10220
 
Price: $1,599.95
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