Page 677 - 2017 Racecar Engineering Circle Track Parts and Accessories Catalog

D154-R GM METRIC RACE CALIPERS
Forged aluminum calipers are fitted with stainless steel pistons and are engineered to offer a lower deflection rate and
higher volumetric efficiency than heavy cast units. Calipers, which weigh just over 3 lbs., feature OEM Metric caliper height
and offset, and accept standard Metric D154 brake pads. Choose from calipers with 2.00" or 2.50" pistons.
Piston Rotor Rotor Bleed Pad
Part No. Dia. Thickness Dia. Screw Kit Type
WIL120-13899 2.00" 1.04" 12.19" WIL220-0627 D154
WIL120-13900 2.50" 1.04" 12.19" WIL220-0627 D154
GM METRIC CALIPERS
GM metric racing calipers represent the latest refinements in caliper design and manufacturing through computer-
based solid modeling and stress simulation programs. Aluminum calipers are a direct replacement for the 1978 and later
D154 type GM metric calipers. Weighing a mere 2.97 pounds each, they offer a substantial weight savings over stock cast
iron calipers. Use D154 style pad sets.
Piston Rotor 4-Pc. Round Pad
Part No. Diameter Thickness Bleed Screw Kit O-Ring Kit Type
WIL120-6426 2.38" .81" WIL220-0627 WIL130-4956 D154
WIL120-6427 2.38" 1.25" WIL220-0627 WIL130-4956 D154
WIL120-7197 2.38" 1.00" WIL220-0627 WIL130-4956 D154

IRON GM METRIC CALIPERS
Ideal for hobby and factory stock classes, cast iron calipers are bolt-on replacements for 1978-up GM units and offer
modern machining and new part quality. Available with undersize (2.00") or oversize (2.75") stainless steel pistons for
easy brake bias adjustment, calipers accept standard GM D154 brake pads. Special bleed screw and inlet fitting provisions
allow use on right or left side. #WIL230-0619 caliper pin slide bolts are required for installation. Use D154 style pad sets.
Piston Rotor Caliper O-Ring Pad
Part No. Description Dia. Thickness Bolt Kit Piston Kit Type
WIL120-8924 Oversize GM Metric Caliper 2.75" 1.00" WIL230-0619 WIL200-6633 WIL130-4955 D154
WIL120-9333 Undersize GM Metric Caliper 2.00" 1.00" WIL230-0619 WIL200-9342 WIL130-0777 D154

HD 48 CURVED HD SERIES DIRECTIONAL
VANE ROTORS VANE ROTORS
Manufactured from a proprietary iron alloy that Spec-37 heavy wall castings are ideal for asphalt
is engineered to withstand extreme temperatures late models, modifieds and other open wheel race
and provide resistance against distortion, warping, cars. HD Series rotors have directional cooling
cracking and wear. HD 48 Curved Vane Rotors are vanes for superior heat absorption and dissipation.
machined with less than .001" run-out, flatness Long grain, carbon iron rotors are exceptionally
and parallelism. stable and durable.
Rotor Rotor No Of Hole Bolt Rotor Rotor No. of Hole Bolt
Part No. Mount Thk. Dia. Mt. Holes Type Circle Weight Part No. Mount Thk. Dia. Mt. Holes Type Circle Weight
WIL160-13497 RH 1.21" 11.75" 8 .316" 7.00" 10.4 lbs. WIL160-11835 RH 1.25" 12.19" 8 .313" 7.00" 12.7 lbs.
WIL160-13498 LH 1.21" 11.75" 8 .316" 7.00" 10.4 lbs. WIL160-11836 LH 1.25" 12.19" 8 .313" 7.00" 12.7 lbs.
WIL160-13499* RH 1.21" 11.75" 8 .316" 7.00" 10.4 lbs. WIL160-13978 RH .990" 11.75" 8 .326" 7.00" 7.1 lbs.
WIL160-13500* LH 1.21" 11.75" 8 .316" 7.00" 10.4 lbs. WIL160-13979 LH .990" 11.75" 8 .326" 7.00" 7.1 lbs.
* Signifies slotted.

GT-36/GT-48 SERIES SRP DRILLED
DIRECTIONAL VANE ROTORS AND SLOTTED ROTORS
Superior heat absorption and dissipation make Rotors incorporate a special, directional cross
GT-36/GT-48 rotors ideal for professional motorsports. drill and face slot pattern that is designed to
Cast from premium carbon iron for thermal stability, improve brake response and pad performance dur-
resistance to distortion and extended life. ing both light and heavy braking. Rotors are black
electro coated for corrosion resistance.
Rotor Rotor No. of Bolt
Part No. Mount Thk. Dia. Mt. Holes Hole Type Circle Weight Rotor Rotor No of Hole Bolt
WIL160-4564 RH 1.25" 12.90" 12 .251" 8.75" 11.7 lbs. Part No. Mount Thk. Dia. Mt. Holes Type Circle Weight
WIL160-4565 LH 1.25" 12.90" 12 .251" 8.75" 11.7 lbs. WIL160-7097-BK RH .810" 10.75" 6 .325" 6.25" 7.2 lbs.
WIL160-11839 RH 1.25" 12.19" 8 .313" 7.00" 12.7 lbs. WIL160-7098-BK LH .810" 10.75" 6 .325" 6.25" 7.2 lbs.
WIL160-11840 LH 1.25" 12.19" 8 .313" 7.00" 12.7 lbs.
WIL160-12285 RH .810" 11.75" 8 .325" 7.00" 9.0 lbs.
WIL160-12286 LH .810" 11.75" 8 .325" 7.00" 9.0 lbs.
WIL160-12291 RH .810" 12.19" 8 .325" 7.00" 9.6 lbs.
WIL160-12292 LH .810" 12.19" 8 .325" 7.00" 9.6 lbs.
WIL160-12293 RH .810" 12.19" 8 .325" 7.62" 9.3 lbs.
WIL160-12294 LH .810" 12.19" 8 .325" 7.62" 9.3 lbs.

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