Easton make a series of MTB bars which they have termed Monkey and these include the EA30, EA50 and EA70, plus also the Monkey Bar Vice Handlebar, which is super strong and specifically designed for use with the Adjustable Vice Stem.
As an example there is the Monkeylite CNT bar, which has toughened the resin with CNT to give them great impact resistance and strength.
These CNT carbon bars are 20% stronger than previous Easton models and much stronger than other brands. Featuring: 8 bend, 4 upsweep, Composite TaperWall technology, Reinforced stem and brake lever clamping zones and a weight of 150g.
Then there is the Monkeylite EC70 Riser Handlebar, using the same CNT technology. This is available in Downhill and Cross Country versions.