Wolf Tooth Premium EC44 Internal Aero Headset for ENVE IN-Route System

Wolf Tooth Premium EC44 Internal Aero Headset for ENVE IN-Route System Info

Wolf Tooth Premium EC44 Internal Aero Headset for ENVE IN-Route System is engineered for riders who demand clean integration, precise steering, and long-term durability from their cockpit. Designed exclusively for ENVE’s IN-Route internal cable system, this headset delivers an ultra-low stack profile while maintaining the smooth, reliable performance expected from a premium, USA-made component.

Machined in Minnesota from aircraft-grade 6061 aluminum, the EC44 headset is built to complement modern aero frames and one-piece cockpits without unnecessary bulk or weight. Wolf Tooth’s focus here is refinement—tight tolerances, thoughtful sealing, and a finish that looks just as good as it performs. Available in multiple anodized color options, it’s an easy way to add subtle customization while keeping everything functionally dialed.

At the core of the system are Enduro stainless steel bearings, chosen for their smooth rotation and resistance to corrosion. These bearings are protected by Wolf Tooth’s industry-leading triple-seal system, designed to keep out water, grit, and road grime in all conditions. The result is longer bearing life, quieter operation, and consistent steering feel over thousands of miles.

Specs at a Glance

• Material: CNC-machined 6061 aluminum.
• Bearings: Premium Enduro stainless steel bearings with lifetime warranty.
• Upper Stack Height: 15.8mm.
• Lower Stack Height: 12.25mm.
• Total Weight: 116g (69g upper, 47g lower).
• Bevel Angle: 36 x 45 degrees.

Compatibility & Design Details

• System Compatibility: Fits only the ENVE IN-Route System.
• Headtube: 44mm internal diameter straight headtube.
• Steerer: 1-1/8” to 1.5” tapered steerer tube.
• Integration: Designed for use with ENVE stems and one-piece cockpits using ENVE-provided top cap and split spacers.
• Sealing: Triple-sealed design including an internal o-ring top cap seal, molded upper cup lip seal, and dual-lip crown race seal.
• Included: Complete upper and lower EC44 headset, Enduro bearings, and two 0.5mm spacers for fine-tuning compression.

Final Take

This EC44 Internal Aero Headset is a purpose-built solution for ENVE IN-Route frames, offering clean aesthetics, low stack height, and exceptional durability. With premium bearings, advanced sealing, and precise machining done entirely in the USA, it’s an ideal choice for riders looking to finish an integrated cockpit with confidence and long-term reliability.