Wilwood Forged Narrow Superlite 4R Big Brake Rear Brake Kit (Race) - Manual (Page 3)

General Information, Disassembly, and Assembly Instructions
Parts List
•Installation of this kit should ONLY be performed by individuals experienced in the
installation and proper operation of disc brake systems. Prior to any attempt to
install this kit, please 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 axle.
This kit is designed for direct bolt-on installation to 1997 through 2003 model year
Chevrolet C-5 Corvette hubs. 2000-2004 original equipment C-5, Z06 or
speciality aftermarket wheels. 2005-present C-6 Corvette hubs.
•Verify your wheel clearance using Figure 2.
•Verify that the factory axle and stud pattern matches the stud hole pattern in the
hats supplied with this kit. Axles that have been modified with different size studs
or lug patterns may require modifications to the hat that must be performed
by a qualified machinist.
•WARNING: Brake pads included in this kit are intended for high temperature race
use only. Extended use at low temperature can cause accelerated rotor and pad
wear. Please see the associated components list on the last page of this data
sheet for alternative brake pad compounds for other uses.
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 wheel. Remove the two bolts from the backside of the upright that holds the stock caliper mounting bracket and lift off the
bracket and stock caliper as one unit. You may have to unbolt the stock caliper from the caliper bracket before removal. Save the
stock caliper mounting bracket bolts and washers, they will be utilized during reassembly. Then slide off the rotor. Remove the parking
brake shoes.
•Clean, de-grease and remove all nicks or burrs on the upright assembly as well as the stock caliper bracket bolts.
FACE OF
STOCK HUB
INSIDE WHEEL PROFILE
(MINIMUM REQUIRED
FOR CLEARANCE)
.25 HAT THICKNESS
REFERENCE
FACE OF WILWOOD HAT
STOCK WHEEL MOUNTING
SURFACE OFFSET
CENTER
LINE OF
WHEEL
1.20 (30,5)
.58 (14,7)
4.29
(109,0)
7.49
(190,2)
7.42
(188,5)
WHEEL STUDS
WILWOOD
ROTOR
CALIPER
Figure 2. Wheel Clearance Diagram
1
2
3
4
5
6
7
7A
8
9
10
11
12
13
2
12
2
2
24
24
2
2
4
4
4
16
1
24
250-8167
240-8127
160-7597/98
170-12985
240-11240
230-6738
120-11783-BK
120-12602-N
230-9183
240-10190
230-9078
240-1159
15H-8546K
300-8429 Bracket, Caliper Mounting
Shim, .015 Thick
GT Rotor - 1.00” X 12.90” Dia, 12 x 8.75” Bolt Circle (one each, right and left)
Hat, 5 x 4.75, .710 Offset, 12 x 8.75 B.C.
Washer, .265 I.D. x .500 O.D. x .063 Thick
Bolt, 1/4-28 x .750 Long, 12 Point
Caliper, Billet Superlite 4R
Caliper, Billet superlite 4R, Nickel
Nut, 3/8-24 Self-Locking, 12 Point
Shim, .035 Thick
Stud, 3/8-16 x 3/8-24 x 2.50 long (pre installed in bracket)
Washer, .391 I.D. x .625 O.D. x.063 Thick
Pad, PolyMatrix H Compound, Axle Set
T-Nut, 1/4-28
ITEM NO. PART NO. DESCRIPTION QTY
NOTES:
Part Number 230-6656 Rotor Bolt Kit, includes part numbers 230-6738, 240-11240, and 300-8429
Part Number 250-8168 Caliper Bracket Mounting Bolt Kit, includes P/N 230-9183, 230-9078, 240-1159, 240-10190, 240-8127 & 250-8167
Item 7A is an optional item included in the “-N” nickel caliper kit. Add “-N” to end of part number when ordering
Wilwood offers an optional Braided Stainless Steel Hose Kit. Order part number 220-8177 for C-5, 220-9101 for C-6 (not included in kit)
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