The sidewalls and outer wall are built much thicker than most other rims with a thinner inner wall keeping that balance

They also feature plastic bar ends

The frame is made from 100% 4130 chromoly with top and down tube gussets

Breathable airprene construction with soft inner liner and mesh panel keep them comfortable during the most aggressive shredding

the frame still accommodates a 2

United Dirty Bars Size:9" Rise The sidewalls and outer wallFernando Laczko's signature Dirty Bars are here! United have created a bombproof set of bars built to survive whatever Fernando throws at them. Built from full chromoly that's heat treated giving them improved durability and reliability. Their 28" width, 9" rise with a 12 backsweep and a tiny 1 upsweep, ensure the United Dirty Bars are ready for any occasion. ###section### Product Specs Rise: 9" Width: 28" Up Sweep: 1 Backsweep: 12 Bar Clamping