I bought this with a Ratech installation kit from www.thunderracing.com. It was $19+ shipping. It prevents the pinion gear from walking up the ring gear which causes the teeth to get broken off the gears. I decided to go with the regular crush collar that came with the installation kit, so I am selling this. I would like to get $15 shipped. It was never used and is still in the original package.

Matt

 

If it's the 4111 kit for our 10 bolt rear, with shims, unopened, I'll give you 15 for it shipped... sent you an email...

 

Sent you an e-mail back.

 

Replied.. consider it sold.. thanks!

 

Ditto, sent you an e-mail.

Sounds good!