You don't need Titanium Chain Tendioner Bolts, but you want them.
These Aircraft Grade 6/4v Titanium Chain Tensioner Nut and Bolt set is a direct replacement for the stock heavy steel nut and bolt.
Lighter than Steel, Stronger than Alloy and only 10grams, saves over 20 grams from the stock Steel Bolts.
Available in Natural Titanium Finish only.
Sold as a Set for Both Sides. 2 Bolts and 2 Nuts