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Components / Cockpit & Pedals / Stems
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Tharsis Trail Stem

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MSRP $149.99
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Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

Business at the front.

If you're running a Di2 mountain drivetrain, there's nary a cleaner way to route your cabling than with a PRO Tharsis Trail Stem and a Tharsis Carbon MTB Handlebar, which allow for internal Di2 cable routing and battery mounting. 3D-forged and CNC-machined Al-7075 construction with a wide faceplate makes the Tharsis Trail Stem strong enough to handle aggressive enduro riding, and sleek routing underneath the faceplate creates a path for a Di2 shifter wire to connect to an internally mounted battery. The BTR expander replaces the typical star nut system for adjusting headset tension and opens up space for mounting a Shimano Di2 battery inside the fork steerer.

0° rise. 31.8 mm clamp diameter. 1 1/8" steerer diameter. Claimed weight is 95 g (35 mm length).

Note: BTR expander system requires a 32 mm headset wrench such as the Park Tool HCW-15.


Stem Clamp Diameter: 31.8 mm


Stem Length: 35 mm


Stem Length: 45 mm


Stem Length: 55 mm


Stem Length: 65 mm

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