Page 808 - 2021-22 Auto Performance_Circle Track
P. 808
Ultralight 32 Vented Rotors
Ultralight rotors are the popular choice for dirt track and lighter-duty pavement racing. Premi- um-grade, long-grain carbon iron provides ex- cellent thermal stability, long life, and resistance to heat checking. UL-32 rotors are available with straight or directional vanes for improved cooling.
UL-32 Directional Vane Rotors
HP Racing Rotors for OE Spindles
Stocks, and other hobby classes, rotors
are approved by IMCA, UMP, USCS, and
USMTS. Cast from a proprietary iron alloy to
offer improved strength and durability, rotors are
5" bolt circle. Hub installation kits are also available, complete
Bolt with inner and outer wheel bearings, hub seal, spindle nut, tab
Part No.
Rotor Mount Thk.
Rotor No. of
Dia. Mt. Holes Hole Type
Circle Weight
washer, cotter pin, and dust cap.
Part No. Description
Drilled Steel Rotors
High-strength steel alloy rotors of- fer greater resistance to warping and are drilled to reduce rotating unsprung weight.
WIL160-2894
RH
1.25"
12.19"
8
.325"
7.00"
10.5 lbs.
WIL160-2895
LH
1.25"
12.19"
8
.325"
7.00"
10.5 lbs.
WIL160-2898
RH
1.25"
11.75"
8
.325"
7.00"
9.6 lbs.
WIL160-2899
LH
1.25"
11.75"
8
.325"
7.00"
9.6 lbs.
WIL160-2900
RH
1.25"
12.19"
8
5/16"-24
7.62"
10.1 lbs.
WIL160-2901
LH
1.25"
12.19"
8
5/16"-24
7.62"
10.1 lbs.
WIL370-9537
Hub Installation Kit for WIL160-9239 Rotor
WIL370-9545
Hub Installation Kit for WIL160-9240 Rotor
UL-32 Straight Vane Rotors
Rotor Rotor Thk. Dia.
No. of Hole Bolt
Part No.
Mt. Holes Type
Circle
Weight
WIL160-0495
.31"
12.00"
8
5/16"-24
7.62"
4.6 lbs.
WIL160-0525
.35"
12.00"
8
.325"
7.00"
5.4 lbs.
Part No.
Rotor Thk.
Dia. Mt. Holes Type
Circle Weight
Rotor No. of Hole Bolt
WIL160-0277
.81"
12.19"
8
.325"
7.00"
8.9 lbs.
WIL160-0471
.81"
11.75"
8
.325"
7.00"
8.1 lbs.
WIL160-0483
1.25"
11.75"
8
.325"
7.00"
8.8 lbs.
WIL160-3747
.75"
10.25"
6
.325"
5.50"
6.1 lbs.
WIL160-5840
.81"
11.00"
6
.325"
6.25"
7.9 lbs.
WIL160-5844
.81"
12.19"
8
5/16"-24
7.62"
8.8 lbs.
Dynamic-Mount
Drilled Steel Rotor
The most effective method of eliminat-
ing thermal stress and distortion, dynam- ic-mounted rotors are machined to accept special bolts and T-nuts, which allows the rotor to expand and contract independently of the mounting hub or hat.
Rotor Rotor No of Hole Bolt
Part No. Thk. Dia. Mt. Holes Type
Circle
Weight
WIL160-9772*
.350"
11.75"
8
.325"
7.00"
4.1 lbs.
ULD-32 Drilled Straight Vane Rotors
* To mount this rotor on a 5/16"-18 threaded hat or hub, use bolt and T-nut kit WIL230-5308.
Part No.
Mt. Holes Type
Circle
Weight
Rotor Rotor Thk. Dia.
No. of Hole Bolt
WIL160-5863
.81"
11.75"
8
.325"
7.00"
7.2 lbs.
WIL160-5864
1.25"
11.75"
8
.325"
7.00"
7.7 lbs.
WIL160-5865
.81"
12.19"
8
.325"
7.00"
8.0 lbs.
Rotor Bolt Kits
Bolt kits fasten rotors to hubs or hats. All bolts are lock wire drilled, unless
Part No.
WIL230-0150
Description
WIL230-0150
Socket Head, Threaded Rotors, (8) 5/16"-24 x .750"
WIL230-0526
Hex Head, Wide 5/Threaded Hats,
(8) 5/16"-18 x 1.00" (Not Lock Wire Drilled)
WIL230-4572
Stainless Steel, GT Hats, (12) 1/4"-20 x 1.00"
WIL230-8008
Stainless Hat/Rotor Bolt Kit, (12) 1/4"-20 x 0.750" 12-Pt Bolts
Dynamic Mount Kits
WIL230-14845
(8) 5/16"-24 Hex Head x 0.750" Bolts with T-Nuts
WIL230-14844
(8) 5/16"-24 Hex Head x 0.750" Bolts with T-Nuts
WIL230-10800
(9) 1/4"-28 Hex Head x 0.625" Bolts with T-Nuts NEW!
WIL230-6656
(12) 1/4"-28 12-Pt. Head x 0.750" Bolts with T-Nuts NEW!
ULS-32 Scalloped Straight Vane Rotors
Rotor Rotor Part No. Thk. Dia.
No. of Hole Bolt
Mt. Holes Type
Circle
Weight
WIL160-8135
.81"
11.75"
8
.325"
7.00"
5.4 lbs.
WIL160-8136
.81"
12.19"
8
.325"
7.00"
5.9 lbs.
WIL160-8343
1.25"
11.75"
8
.325"
7.00"
5.8 lbs.
WIL160-8814
1.25"
11.75"
8
.325"
7.00"
6.7 lbs.
WIL160-12041
1.25"
11.75"
8
.325"
7.00"
5.4 lbs.
WIL160-13373
.810"
11.75"
8
.325"
7.00"
5 lbs.
806 TRACK
CIRCLE 2021-22
