Page 424 - 2018 Racecar Engineering Open Wheel Parts and Accessories Catalog

Mini Sprint Titanium Rotor
Left Front Brake Kit WIL140-12956 WIL160-14185
Left Front Sprint and Super alloy titanium slotted rotors are
Midget kits are a further Sprint racing's lightest rotors at a weight of
evolution of a proven design between 2.8 to 3 pounds. Wilwood’s propri-
from Wilwood’s 35+ years of etary Super Alloy Titanium greatly enhances
engineering and producing the durability and lifespan of this rotor over
the best open wheel braking comparable lightweight steel or iron rotors.
systems. Dynapro single A directional slotted surface allowing for full
calipers have a full 2.40 pad contact. This provides excellent high temperature stability, with
square inches of area for WIL140-12957 rapid heat dissipation and consistent performance from the brake
increased clamping force. Kits are offered with either scalloped alloy pads. The fine micro-finish surface beds quickly with new pads. It
steel rotors for high heat or aluminum rotors for maximizing weight provides a cost effective, lightweight solution with quick response,
saving on light braking tracks. Kit come complete with caliper, brake long service life from the pads, and consistent braking at all tem-
pads, caliper mounting brackets, caliper mount bolt kit, rotor and peratures. Lowered rotating weight promotes quick acceleration,
rotor mounting hardware.
deceleration, and improved handling.
Part No. Description
WIL140-12956 Aluminum Rotor
WIL140-12957 Steel Rotor Mini Sprint Front Rotor
And Brake Combo
This ultimate lightweight Mini-Sprint front
Sprint Car Left Front
brake combination includes a specifically
Caliper Bracket WIL250-12872 designed precision CNC machined alumi-
11" Caliper Bracket. num front brake rotor for Keizer hubs with 5
x 2.38" mount circle. The rotor is heat treated,
anodized, drilled and scalloped, the full sym-
Sprint Car Dynamic Inboard Hub Kit metrical machining provides perfect balance
This kit mounts 6 x 5.50" bolt and flatness. The lightweight two-piston (1.25"
pattern rotors and includes diameter) caliper, for use with .25" wide rotors
the rotor adapter and weighs only .90 pounds. Designed for tight fit applications while uti-
dynamic rotor mounting lizing a standard 2.38" mounting. The composite metallic compound
bolt kit. Manufactured from “Purple Pads” are ideal for high temperature durability on aluminum
high strength aluminum, it brake rotors.
provides a lightweight and Part No. Description
strong solution for rotor mounting. Gen II hubs Brake Rotor, 7.00" x .25" x 2.38",
offer improved clearance and easier installation. WIL160-13712 Aluminum, Drilled, Scalloped
Hardware includes high strength t-nuts and bolts. Caliper, GP200, Billet Aluminum,
WIL120-12178
Part No. Description 1.25" Dia. Pistons, 2.38" Mount
WIL270-12635 10" Rotor WIL150-12270K Brake Pads, GP200,
WIL270-12633 12" Rotor 4908 Purple/Aluminum Compound, Box of 4

Drilled Steel Rotors WIL160-5538 Dynamic Mount
Manufactured from a proprietary, high Drilled Steel Rotor
strength alloy, solid steel rotors have sta- The most effective method of eliminat-
bility and resistance to warpage. Rotors ing thermal stress and distortion, dynamic
are designed for open wheel applications mounted rotors are machined to accept spe-
that do not demand continuous thermal cial bolts and T-nuts, which allows the rotor
cycling or great cooling requirements. to expand and contract independently of the
Fully blanchard ground rotors feature mounting hub or hat.
a lightweight, cross-drilled design for
reduced unsprung rotating weight. Rotor Rotor No of Hole Bolt
Part No. Thk. Dia. Mt. Holes Type Circle Weight
Rotor Rotor Mount Bolt Bolt Weight WIL160-9772* .350" 11.75" 8 .325" 7.00" 4.1 lbs.
Thk. Dia. Holes Hole Circle Application (Lbs.) * To mount this rotor on a 5/16"-18 threaded hat or hub, use bolt and
.350" 12.19" 8 Dynamic 7.00" Rear 4.8
T-nut kit WIL230-5308.

UL-32 Straight Vane Rotors
Drilled Steel Rotors Ultralight rotors are the popular choice for
WIL160-0525 dirt track and lighter duty pavement rac-
High strength steel alloy rotor has greater ing. premium grade, long grain carbon iron
strength and resistance to warping and is provides excellent thermal stability, long life,
drilled to reduce unsprung rotating weight. and resistance to heat checking. UL-32 rotors
include straight vanes for improved cooling.
Rotor Thk. Rotor Dia. No. Of Mt. Holes Hole Type Bolt Circle Weight
.35" 12.00" 8 .328" 7.00" 5.4 Lbs. Rotor Rotor No. Of Hole Bolt
Part No. Thk. Dia. Mt. Holes Type Circle Weight
WIL160-0277 .81" 12.19" 8 Thru 7.00" 8.9 Lbs.
WIL160-0471 .81" 11.75" 8 Thru 7.00" 8.1 Lbs.
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