The Stay Strong 4-Bolt Chainring at J&R Bicycles is made of fully CNC machined aircraft-grade 7075 aluminum which makes for a strong and lightweight cog. This 4-bolt design measures 4mm thick and while it only weighs 78g, it delivers efficient transfer power when you need it most. This streamlined design features a CNCd bolt recess and is finished off with laser-etched Stay Strong logos.

• Weight: 78g