FSA Xtreme Pro EC34 Lower HeadsetThis headset features a hard-wearing forged and CNC-machined aluminium construction, which makes it ideal for everything from clocking up the miles on your road bike to shredding the trails on your mountain bike. FSA has also equipped this model with robust stainless steel bearings, so you can enjoy a durable, smooth action as you conquer every journey. Engineered for performance, this versatile headset weighs in at only 43.4g. This means that you'll also benefit from its incredible strength and smooth rotating performance, without worrying about adding any unnecessary weight to your ride.Features: Cup Material: Forged and CNC-machined Alloy Bearing Material:Stainless Steel Use: Road, MTB FSA Headset Category: Premium Fork Steerer Compatibility: 1-1/8" forks Lower: 1-1/8", 36°/36° ACB (Black seal) Higher quality seals Laser etched graphic to easily identify the headset spec plus provides a higher quality look EC34/30 Part Number: 121-0516 Weight: 43.4g (approx)Buy FSA Components from Chain Reaction Cycles, the World's Largest Online Bike Store.