What is this???
Burning Brakes
Joined: Mar 2006
Posts: 1,102
Likes: 587
From: Seal Rock Oregon
I believe it's the wire used to attach the Z51 rotor cooling rings if you want to drive your Z51 on the track. My first C7 Z51 came with the rings and the wire spool and some mounting instructions.
"My Dad's a TV Repairman"
Joined: Jul 2014
Posts: 471
Likes: 153
From: San Diego
It's safety wire. It's used to retain the rings through the holes to the hub. A normal set of pliers, grasping the two ends of the looped wire can be used to twist the ends together, preferably at a 45 degree angle. If you're high speed and low drag, you can get a set of safety wire pliers or speed pliers. 
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From: In a parallel universe. Currently own 2014 Stingray Coupe.
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Interesting - first time I have seen that since I do not have a Z51 car.
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Safety Car
Joined: Mar 2006
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Likes: 5,145
From: Chester VA
Moderator emeritus
Joined: Jun 2001
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
My lump of "solder" is still in the plastic bac with the discs in the garage. Still virgin! I will sell for a ridiculous price that will embarass anyone that bites! 
Forgot all about that stuff that came with the car.
Elmer
Forgot all about that stuff that came with the car.
Elmer
Melting Slicks
Joined: Jan 2015
Posts: 2,105
Likes: 949
From: Fleming Island Florida
I actually used my cooling rings and safety wire the first time I tracked my car. Of course the stock Z51 rotors with the rings still didn’t dissipate the heat very well. I wound up swapping them out for better aftermarket rotors.
Roadster Madness. 😠
Joined: Sep 2009
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From: Ventura Co Ca
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St. Jude Donor '13, '20-'21
Boy, that brought back some ancient memories.
Before Loctite in the early 1970's, I used to Campaign a Honda 350 and then a Yamaha RD 350 in Open Production Road Racing.
Just about every bolt and nut was Safety Wired and that was a major pain to do. There was a special tool for the wire, after you drilled the hole through the nut and bolt.
Before Loctite in the early 1970's, I used to Campaign a Honda 350 and then a Yamaha RD 350 in Open Production Road Racing.
Just about every bolt and nut was Safety Wired and that was a major pain to do. There was a special tool for the wire, after you drilled the hole through the nut and bolt.
Team Owner
Joined: Sep 2000
Posts: 25,019
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From: Far NW 'burbs of Chicago
St. Jude Donor '13
Our 2017 Z51 came with the newer one-piece rotors, and so didn't need/couldn't use the cooling rings, wire, etc.
But when I looked in the cubby, all that stuff was there; just waiting for me to throw it away.
But when I looked in the cubby, all that stuff was there; just waiting for me to throw it away.