Wilwood Forged Narrow Superlite 4R Big Brake Front Brake Kit (Hat) - Manual (Page 3)

General Information and Disassembly Instructions
Parts List
• 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 front 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 2007 through present model year
Jeep JK Series 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 adapter ring and hat. 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 front brakes:
Raise the front wheels off the ground and support the front suspension
according to the vehicle manufacturer’s instructions.
Remove the front wheels, calipers and rotors.
• Remove any nicks or burrs on the axle hub and upright that may interfere with the
installation of the new brake components.
• Clean and de-grease the axle hub, dust shield, and caliper mounting bosses.
CENTER
LINE OF
WHEEL
.50 (12,7)
RADIUS .98 (24,9)
3.91 (99,3)
4.97
(126,2)
7.87
(199,9)
.13
(3,3)
CALIPER
WILWOOD ROTOR
WHEEL MOUNT SURFACE
NOTE: A MINIMUM OF .080” CLEARANCE MUST BE MAINTAINED
BETWEEN THE WHEEL AND CALIPER IN ALL AREAS
1.25 (31,8) ROTOR THICKNESS
2.84 (72,1)
CENTER REGISTRATION
Figure 2. Wheel Clearance Diagram
1
2
3
4
5
6
6A
7
8
9
10
10A
11
12
13
14
15
16
2
4
4
24
2
2
2
2
24
24
2
2
4
4
4
4
16
1
250-12397
230-8967
240-11855
240-8969
300-11962
160-8398/99
160-8396/97-BK
170-12399
240-11240
230-6737
120-12501-BK
120-12501-RD
230-9183
240-10190
230-9079
300-7392
240-1159
150-8855K Bracket, Caliper Mounting
Bolt, M14-2.00 x 40mm Long, Hex Head
Washer, .578 I.D. x 1.062 O.D. x .063 Thick
Shim, .029 Thick
Adapter, Rotor Registration
Rotor, GT - 1.25” x 14.00” Dia, 12 x 8.75” Bolt Circle (one each, right and left)
Rotor, Black, SRP Drilled and Slotted (one each, right and left)
Hat, Big Brake, .850 Offset, 12 x 8.75” Bolt Circle
Washer, .265 I.D. x .500 O.D. x .063 Thick
Bolt, 1/4-20 x 1.00” Long, 12 Point
Caliper, FNSL4R, Black
Caliper, FNSL4R, Red
Nut, 3/8-24, Self-Locking, 12 Point
Washer, .391 I.D. x .625 O.D. x .063 Thick
Stud, 3/8-16 x 3/8-24 x 3.150 long (pre installed in bracket)
Spacer, .573 Long
Shim, .035 Thick
Pad, BP-10 Compound, Axle Set
ITEM NO. PART NO. DESCRIPTION QTY
NOTES: Part Number 230-4572 Rotor Bolt Kit, includes P/N’s 230-6737 and 240-11240
Part Number 250-12401 Caliper Mounting Bracket Kit, includes P/N’s 230-9183, 230-9079, 240-1159, 240-10190, 250-12397 & 300-7392
Part Number 230-9077 Bracket to Spindle Mounting Bolt Kit, includes P/N’s 230-8967, 240-8969 and 240-11855
Item 6A 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 caliper kits. Add “-R” to end of part number when ordering.
Wilwood offers an optional Braided Stainless Steel Hose Kit. Order part number 220-11237 (not included in kit).
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