FSA Afterburner Stem 31.8mm Clamp Diameter 90mm Length ±12° Angle MTB Use – Alloy MFPN=8508 60 % Carbon 16/9: A

60 % Carbon 16/9: A 60% Carbon shaft with a 16mm diameter at the top that tapers down to 9mm near the tip

8 Cable Routing Internal Width Measurement Center Width 40 Defined Color Black Clip-on Compatible No

Heat-treated tool steel construction for strength and durability

62Top Tube Length (mm) 522 532 546 556 568 583Seat Tube Length (mm) 420 457 500 522 539 573Seat Tube Angle (°) 74

11 mm pitch

FSA Afterburner Stem 31.8mm Clamp Diameter 90mm Length ±12° Angle MTB Use – Alloy MFPN=8508 60 % Carbon 16/9: AThe FSA Afterburner Stem is a robust and versatile option for mountain bikers tackling aggressive trails. Built from forged aluminum it offers a strong lightweight platform for precise steering and durability. Its trail ready design makes it a dependable choice for riders who demand control and confidence on technical terrain.