Parts List
General Information and Disassembly Instructions
• Installation of this kit should ONLY be performed by persons experienced in
the installation and proper operation of disc brake systems. Before assembling this Wilwood rear disc brake kit, double check the following to ensure a trouble free installation.
• Inspect the contents of this kit against the parts list to ensure that all
components and hardware are included.
• Make sure this is the correct kit to fit the exact make and model year of your
vehicle. This kit is designed for direct bolt-on installation to Factory Five Roadster/Challenge car solid axle hubs.
• Verify your wheel clearance using Figure 2.
• Verify that the factory axle hub center register diameter and lug pattern
match those in the new hat and rotor registration adapter. NOTE: Axle hubs that have been modified with different size studs or lug patterns may require modifications to the new hat that must be performed by a qualified machinist.
Disassembly • Disassemble the original equipment rear brakes:
Raise the rear wheels off the ground and support the rear suspension according to the vehicle manufacturer’s instructions.
Remove the rear wheels and disassembly the brake assembly down to the bare axle, including pulling out the axle per manufacturer’s specifications and removing the OEM caliper mounting bracket.
• Remove any nicks or burrs on the axle housing flange, as well as the axle flange, that may interfere with the installation of the new
brake components.
• Clean and de-grease the axle and axle housing flange.
CENTER LINE OF WHEEL
.34 (8,6)
3.00 (76,2)
5.19 (131,8)
.58 (14,7)
15°
4.56
(115,8)
7.87
(199,9)
CALIPER
WILWOOD ROTOR
WHEEL MOUNT SURFACE
NOTE: A MINIMUM OF .080” CLEARANCE MUST BE MAINTAINED BETWEEN THE WHEEL AND CALIPER IN ALL AREAS
.81 (20,6) ROTOR THICKNESS
2.80 (71,1)
CENTER REGISTRATION
.87 (22,1) RADIUS
Figure 2. Wheel Clearance Diagram
1 2 3 4 5 6 7 8 9
9A
10
10A
11
12 13 14 15 16 17
2 8 8 8 2 4 4
16
2 2 2 2 4 4 4
16
1 2 1
250-12052/53 230-2090 240-10190 230-5989 250-12055 230-10296 240-1159 240-1848 160-12150 160-9812/13-BK 120-10112/13-BK 120-10112/13-RD 230-9183 240-10190 230-9078 240-1159 150-9184K 300-11337 220-12093
Bracket, Flange (pair, one each, right and left) Bolt, 3/8-24 x 1.25 Long, SHCS Washer, .391 I.D. x .625 O.D. x .063 Thick Nut, 3/8-24 Center Lock, Hex Bracket, Caliper Mounting Bolt, 7/16-14 x 1.25 Long, Hex Head Washer, .453 I.D. x .750 O.D. x .063 Thick Shim, .030 Thick Rotor, ULHP .81” X 12.19” Dia. Rotor, SRP Drilled and Slotted (one each, right and left) Caliper, CPB, 41 mm (one each, right and left) Caliper, CPB, 41 mm, Red Nut, 3/8-24 Self Lock, 12 Point Washer, .391 I.D. x .625 O.D. x .063 Thick Stud, 3/8-16 x 3/8-24 x 2.50 Long (pre-installed in bracket) Shim, .035 Thick Pad, BP-10, Axle Set Adapter, Rotor Registration Flex Line Hose Kit (not shown)
ITEM NO.
PART NO.
DESCRIPTION
QTY
NOTES: Part Number 230-12057 Bracket to Bracket Mounting Bolt Kit, includes P/N’s 230-10296, 240-1848 and 240-11101
Part Number 230-11448 Bracket Mounting Bolt Kit, includes P/N’s 230-2090, 230-5989 and 240-10190 Part Number 250-12054 Caliper Mounting Bolt Kit, includes P/N’s 230-9078, 230-9183, 240-1159, 240-10190 and 250-12055 Item 9A is an optional item and is included with the “-D” drilled kits. Add “-D” to end of part number when ordering Item 10A is an optional item and is included with the “-R” red kits. Add “-R” to end of part number when ordering
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