The Bombshell Chainring-4-Bolt-Black-45T at J&R Bicycles is made of high-quality materials and engineered to provide accurate and efficient chain tension. CNC machined from lightweight and durable 7075 aluminum, this chainring is built to last but won’t add much weight to your setup. The 4-bolt design with 104mm bolt circle diameter (BCD) is easily installed and maintained.

Features:

• 4 bolt 104 BCD CNC machined chainrings
• 36-50