Wilwood D52 Dual Piston Floater - Manual

4700 Calle Bolero • Camarillo, CA 93012 • www.wilwood.com • Sales: (805) 388-1188 • E-mail Tech Assistance: [email protected]
220 REV DATE: 04-05-11
FORGED BILLET GM D52 FLOATING
OE MOUNT DUAL PISTON CALIPER
Caliper Highlights:
The D52 forged billet caliper is a direct bolt-on,
lightweight, high-strength, extreme duty alternative to
the OE cast iron calipers that were used on a wide
range of GM cars and trucks beginning with full sized
passenger cars in 1968. The original single piston
floating mount caliper models then spread into use on
most of the late 60’s to early 70’s muscle cars and light
trucks that were factory disc brake equipped. Use of this
caliper can still be found on some GM models as late as
the year 2001. The wide spread and affordable availability of
D52 calipers and brake pad compounds also made it a
popular choice in a number of restricted class competition
categories and drum to disc conversions on all types of hot rods
and street machines.
The D52 replacement caliper was designed using computer generated 3D modeling and FEA stress analysis technology.
They have been configured to mount in the stock location with OE type slide-pins in position over the original rotor using
standard OE type brake pads. This caliper design features a stress-flow forged billet aluminum body that provides a
substantial weight savings over the original cast iron caliper, without any of the rust and corrosion issues that are
common to cast iron parts. Stress flow forging realigns the internal grain structure of the metal within the contour of the
caliper body to create a caliper that is superior in strength to any cast or machined from block billet caliper design. There
simply is no better way to build an aluminum caliper with more strength or less weight.
These highly efficient two-piston calipers generate big brake clamping force from a pair of machined stainless steel
pistons. Stainless pistons are used to resist corrosion and retard heat transfer from the pads into the caliper body. The
dual piston design concentrates the clamping force over the entire length of the pad to improve pad loading while
minimizing uneven wear and backing plate deflection over all single piston caliper designs. High temperature, square
faced bore seals are used to provide controlled piston retraction and reliable performance from the wider sealing face.
This combination of components is a proven performer with long service life and a history of reliable performance in any
type of driving environment, including extreme sustained high temperature racing applications. The caliper slide pin
holes are fitted with dampening rings to minimize noise from vibration. The caliper is also fitted with bleed screws on
both ends to facilitate mounting in any left hand or right hand, front leading mount, or rear trailing mount locations.
The caliper inlet port is threaded for use with a 7/16-20 banjo bolt or a line adapter using crush washers as a seal. The
OE rubber lines can be used from any vehicle equipped with a 7/16-20 banjo. For later model vehicles that were
originally equipped with metric connections, a new line kit will be required. Stainless braided line kits with the appropriate
connections are available in 14”, 16” and 18” lengths.
To complete the package, D52 calipers are available as a regular stock items with brake fluid resistant, high-temp glossy
red or black powder coat for those wishing to add a different customized look inside the wheels.
ORDERING INFORMATION:
BLACK RED
BORE SIZE DISC WIDTH PART NUMBER PART NUMBER
2.00” 50,8 mm 1.25” 31,8 mm 120-10936-BK 120-10936-RD
2.00” 50,8 mm 1.00” 25,4 mm 120-10937-BK 120-10937-RD
1.25” 31,8 mm 1.25” 31,8 mm 120-10938-BK 120-10938-RD
1.25” 31,8 mm 1.00” 25,4 mm 120-10939-BK 120-10939-RD
Black Powder Red Powder