MATERIAL: Heat treated 6061 Aluminum

Built from 4130 chromoly throughout the frame

WEIGHT: 122g / 4

A simple but elegant CNC machined rotor plate designed to fit all of our stems and many others on the market

Joris Coulomb's signature Om frame has been a staple part of Subrosa's line up for years now

Shadow Penumbra Pivotal Mid Seat - Coulomb Series 9 supplier_54526949228870 MATERIAL: Heat treated 6061 AluminumJoris always comes through with some beautiful designs that are easy on the eyes. Joris aesthetics that are heavily influenced by his spiritual side. His latest representation via a signature seat. ###section### Product Specs TYPE: Pivotal PADDING: Mid WEIGHT: 0. 76lbs (343g)