Wilwood Narrow Superlite 4r Brake Calipers & Pads,1.25" Disc,road Race,rally Car on 2040-parts.com

You are bidding on a Set of Brand New Wilwood Billet Narrow Superlite 4 Radial Mount Racing Brake Calipers & Polymatrix BP-10 Smart Compound Brake Pads (Part #120-8071-L, #120-8071-R, and #150-8855K).

These calipers require radial mount brackets to mount.  The radial mount holes in these calipers measure 5.98" center-to-center.

Includes both the left side and right side calipers, as well as the brake pads for both.

• Fits 1.25" Thick rotors
• Calipers feature Four 1.75" Pistons each
• Hard-Coat anodized Black 
• Great for use in Street Rods, Street/Strip, Rally, Road Racing, Drag Racing, Off-road racing, and many other high performance & industrial applications

Billet Narrow Superlite 4R Caliper Detail:

The billet SL4R series adds the versatility and convenience of radial mounting to this widely popular caliper group. Radial mounting simplifies adaptation and provides two planes of adjustment for accurate alignment over the disc. These calipers integrate "Big Brake" style with Wilwood's latest technology to generate big stopping power in extreme environments over a broad range of vehicle applications.

The key to the superior performance of the SL4R comes from the extremely durable and efficient body design. Starting at 4.84 pounds it is the product of computer generated solid modeling and FEA stress analysis technology. Full length stiffening ribs and a reinforced radial transition from the piston bore housings to the closed end bridges has produced the strongest SL caliper bodies ever built. When compared to open bridge calipers that use tube or stand spacers between the body halves, the closed end bridge design is measurably stronger with less separation or deflection under load. Additional strength and resistance to deflection comes from the four high-strength steel end bridge bolts. A fifth center bridge bolt provides even more overall strength and easy access to the pads without the need to remove the caliper from the mount.

A unique four-piston differential bore configuration provides balanced loading for even pad wear in sustained high heat environments. In addition, each SL4R is equipped with SRS bridge plates. SRS plates eliminate all bridge wear caused by pad gouging and extend the service life of the caliper. The spring-loaded action of the SRS plates also eliminates pad rattle and dampens the harmonic vibrations that contribute to pad squeal. Two piece bleed screws and dampened fluid tubes are recess mounted to shield them from track debris and other potential damage sources. High temperature, square faced bore seals provide the largest possible sealing area and controlled piston retraction on release. The full range of Wilwood pad compounds is available to match the brake response and heat range of any competition or sports driving application.

Calipers in this group feature a reduced width outboard body to provide additional clearance between the caliper face and the wheel or hub. These calipers were originally built for use with wide 5 hubs, but have found their way to OE performance "Big Brake" conversions, road racing, and other close fit wheel applications. The caliper bridge radius will clear rotors from 11.75" to 14.00" in overall diameter.

Polymatrix BP-10 Smart Pad Compound:

• Heat Range: Low to Medium-High
• Cool Torque: Medium
• Hot Torque: Medium-High
• Wear Rate: Medium

Polymatrix BP-10 Smart Pad Compound:  Medium friction compound with the low noise and low dust of a street performance compound and the increased friction characteristics of a semi-metallic race compound.  Smooth engagement with consistent response from a flat-torque curve throughout its entire effective temperature range.  Good low to middle temperature wear rates.  Beds quickly and provides fast response without excessive abrasion on vented-iron rotors.

We also have thousands of other High Performance Parts in our store.

Shipping:

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Shipping cost will be $9.99 within the continental United States.  If you buy 2 or more of our auctions, shipping will certainly be combined to save you money.  We will be glad to ship internationally.  Just send me a message for an international shipping quote.

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