This is a new engine case saver or sometimes called a chain guide.
 
This guard helps keep the chain from flying through the engine when it comes off while ridding. 
 
This case saver fits the ATC 350X 1985-1986.
 
 I have a 1985 & 1986 ATC 350X & I have this saver on both. I did modify mine some to make sure my case will not get damages in the event of a chain derailment, but I'm not scared to work on things to improve their performance. 

Please also checkout in our eBay store our new "made in the USA" Polyurethane impact absorbent ATC 350X case savers. 





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