Built for enduro and aggressive trail riders who demand a clean, integrated cockpit, the PRO Tharsis Stem (PRSS0677) pairs seamlessly with the PRO Tharsis EVO Handlebar to create a unified two-piece system with internal cable routing. The 50mm length suits riders who want reach without compromise on front-end stiffness.

Highlights

• Internal cable routing: A cutout on the lower stem body channels internally routed cables cleanly from the bar through to the headset, keeping the cockpit tidy and cables protected from trail debris.
• 7000 series alloy construction: Lightweight and durable aluminium delivers a stiff, reliable platform for hard enduro and trail use.
• Oversized 35mm bar clamp: Pairs with PRO Tharsis EVO and other 35mm handlebars for a stiffer, more controlled front end than 31.8mm setups.
• 0-degree rise: Neutral angle keeps your position low and aggressive; adjust stack with spacers to suit your fit.
• Designed for Shimano XTR M9200: Engineered as part of a cockpit system showcasing Shimano's top-tier wireless D12 groupset, with routing to match.
• Two-piece adjustability: Independent bar and stem lengths let you dial in reach and stack independently without replacing the whole cockpit.

Two-piece integrated cockpit

The PRO Tharsis Stem is the foundation of PRO's 2025 Tharsis EVO cockpit system. Unlike a one-piece bar-stem combo, the two-piece design keeps full fit adjustability — swap the stem length without changing the bar, and vice versa. The internal cable channel handles both dropper post and brake hose routing for a clean finish on any build.

Compatibility & Fit

Fits standard 1-1/8" (28.6mm) threadless steerer tubes. Requires a handlebar with a 35mm clamp diameter — not compatible with 31.8mm bars. Available in 35mm (PRSS0675), 40mm (PRSS0676), and 50mm (PRSS0677) lengths. This listing is for the 50mm black variant. Internal routing is designed for use with the PRO Tharsis EVO Handlebar; compatibility with other internally routed bars will depend on the bar's cable exit design.