HCR Stem and Headset System
HCR (Hidden Cable Routing) is a better headset and stem system for road and gravel bikes that use internal headset cable routing. HCR hides the brake hoses from view without fully enclosing them in the stem or spacers, allowing for easier installation, maintenance, and travel.
With its easy-to-use and fully sealed design, HCR delivers the clean look of internal routing without the downsides often associated with it.
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HCR's under-stem channel and slotted spacers hide the brake hoses from view without fully enclosing them. This makes your bike easier to live with and also allows riders to swap stem lengths and adjust spacer stack without disconnecting their brake hoses. HCR gives the clean and modern look of internal cables without the complexity often associated with it.
HCR is the only standardized hidden-cable system on the market that uses a one-piece, aluminum spacer. Why? Because we believe the best bikes shouldn’t use flimsy plastic parts. Aluminum spacers look better, last longer, and maintain headset preload better.
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Product Spec
EC44/28.6 | EC44/40 & IS52/28.6 | IS52/40
70mm, 80mm, 90mm, 100mm, 110mm, 120mm | -6 Degree
90mm : 160g
Stainless steel
Stainless steel Hellbender bearings
One-piece, machined aluminum HCR headset spacers, included with stem (1x10mm, 2x5mm). Standard converter spacer included with headset for use with non-HCR stem.
Interlocking cable seal, steerer tube seal, bearing lip seal, dual-lip crown race seal
Optimized for wireless drivetrains, compatible with mechanical.
Forged and Machined 6066 Aluminum
147g (EC44/EC44 headset + 15mm of spacers)
Machined 6061-T6 Aluminum
8.7mm