Wilwood 160-5865 Ultralite 32 Vane Drilled Vented Iron Rotor, 12.19 In

#8351605865

Wilwood 160-5865 Ultralite 32 Vane Drilled Vented Iron Rotor, 12.19 In

Rotating and unsprung rotor mass reduced by 12%
Follows close tolerances on face and vane thickness
Rotor is cast from premium grade, long grain carbon iron

Type:

Race Drilled Ultralite 32

Plain Face Ultralite HP-32Plain Face Ultralite 32 SRP Drilled/Slotted R/H SRP Drilled/Slotted L/H Plain Face HD 36 R/H Plain Face HD 36 L/H Plain Face Ultralite 32 (Scalloped)

$119.79

/each

In Stock

$125.00

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Product Summary

Rear Position, Round Rotor Shape, Vented Rotor Type

Rotating and unsprung rotor mass reduced by 12%
Follows close tolerances on face and vane thickness
Rotor is cast from premium grade, long grain carbon iron
A two row, 64 hole pattern - alternates between and directly over each vane
The 32 straight vane casting provides superior heat management and long service life

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Key Specs

Rotor Diameter	12.19 Inch
Rotor Style	Drilled
Rotor Material Type	Iron
Rotor Thickness	0.81"
Rotor Hat Bolt Pattern	8 x 7.00"

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Installation Details

Installation Tips

Caution on Drilled Rotors

There is a common mis-perception that rotors are drilled to improve cooling. The reduced mass of a drilled rotor will dissipate its retained heat quicker, but it also builds up heat a much faster rate. The decision to use drilled rotors should be solely based on the merits of the lower rotating and unsprung weight, and NOT for improved cooling. It is NOT wise to use drilled rotors in sustained high heat on hard braking tracks unless the team budget affords a high frequency of rotor and brake pad replacement.

Race drilled rotors are unsafe for street use
Suitable applications: Light to moderate Dirt Racing

Proper Break-In Procedure for Steel or Cast Iron Rotors

New steel/iron rotors should be bedded in before being used in racing conditions. Proper bedding will prepare the rotor surface, prolong the rotor's life, and make it more resistant to thermal checking or cracking under severe braking conditions. The following procedures should be performed when bedding in both steel and cast iron rotors. It is best to bed in a new rotor using a used set of pads, preferably ones which will not create heat rapidly. Generating heat too rapidly will thermal shock the rotors. Likewise, when bedding in a new set of brake pads it is best to perform the process on a used rotor. This new/used bedding process permits controlled bedding of each individual component.

Make sure rotor surfaces are free from oils, grease, and brake fluid. Run vehicle up to a moderate speed and make several medium deceleration stops to heat up the rotor slowly. This will help reduce the chance of thermal shock caused by uneven heating of the rotor. Pull into the pits and allow the rotor to cool to ambient air temperature. Care should be taken not to ride the brakes into the pits as this may hot spot the rotor causing premature wear to the surface or structural damage.

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Wilwood 160-5865 Details

When it comes to brake rotors, racers are constantly searching for the ultimate balance between the lowest weight and the ability to effectively manage heat. Decreased rotating weight in the drive line provides quicker deceleration under braking and quicker acceleration out of the corners. Lower weight also benefits handling with improved spring and shock control over the unsprung suspension mass. Wilwoods ULD-32 drilled iron rotors provides effective lightweight options for sprints, late models, modifieds, and other competition applications that race in low to medium temperature ranges.

Cast from premium grade, long grain carbon iron
Close tolerances on face and vane thickness
32 straight vane casting provides superior heat management and long service life
Two row, 64 hole pattern - alternates between and directly over each vane
Each hole deeply chamfered to eliminate stress points
Rotating and unsprung rotor mass reduced by 12%
Left or right hand mounting locations

Item Details

0.81" x 12.19"
8 x 7.00" B.C.

Specs

Vented iron
Inboard mounted (Sprints)
Thickness: 0.81"
O.D.: 12.19"
Bolt Circle: 8 x 7"
Threads: Thru
Weight: 8.6 lbs
Face: drilled
Rotor Mount Hole Size: .326"
Lug ID / Registration: 6.38"
Far Side Inside Diameter: 8.56"

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

Wilwood 160-5865 Specifications

KEY SPECS
MFG. Part #	160-5865
Brand	Wilwood
Rotor Diameter	12.19 Inch
Rotor Style	Drilled
Rotor Material Type	Iron
Rotor Thickness	0.81"
Rotor Hat Bolt Pattern	8 x 7.00"

GENERAL
Position	Rear
Rotor Shape	Round
Rotor Type	Vented
Rotor Finish	Plain
Vane Count	32 Straight Vane
Bedded	No
Balanced	No
Lug ID	6.38"
Inside Diameter	8.56"
Weight	8 lbs.
Sold in Quantity	Each
GTIN Code	889545039825

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