Wilwood Forged Narrow Superlite 4 Brake Caliper Radial Mount - 0.81" Disc Thickness - Non Handed Red

The Forged Narrow Superlite 4R (FNSL4R) is the latest version for the Wilwood Superlite caliper series which 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 FNSL4R comes from the extremely durable and efficient body design. Starting at 4.9 lbs it is the product of computer generated solid modeling and FEA stress analysis technology. The most noteworthy 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.Available in different piston bore sizes, provides braking as either a front or rear caliper. The standard FNSL4R calipers feature one-piece stainless steel pistons. Stainless is used for its slow heat transfer properties and high resistance to corrosion. In addition, each FNSL4R 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 on each end and internal fluid crossovers prevent damage 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 are non-handed and sold individually.Please note: Brake pads are not included but are available to purchase from our Motorsport brake pad category.table.tableizer-table { border: 1px solid #CCC; font-family: Arial, Helvetica, sans-serif font-size: 12px;} .tableizer-table td { padding: 4px; margin: 3px; border: 1px solid #ccc;}.tableizer-table th { background-color: #104E8B; color: #FFF; font-weight: bold;} Piston No Piston Area in² Piston Material Disc Ø (Min / Max) Disc Width Inlet Thread Pad Area in² Mount Centres Mount Type 4 1.96 Stainless 11.75" / 14.00" 0.81" 1/8" NPT 8.2 5.98" Radial 4 2.46 Stainless 11.75" / 14.00" 1.10" 1/8" NPT 8.2 5.98" Radial 4 4.8 Stainless 11.75" / 14.00" 1.25" 1/8" NPT 8.2 5.98" Radial