Description

Headset URS: Complete Guide to BMC Gravel Bike Headset Replacement, Features, Compatibility, and Installation Tips

If you own a BMC URS gravel bike, you already know it’s one of the most versatile and capable machines for unrestricted riding. But when the front end starts to feel notchy, creaky, or loose, the culprit is often the headset. That’s where the genuine Headset URS comes in – the official complete headset kit designed specifically for the URS platform.

In this comprehensive guide, we’ll cover everything you need to know about the Headset URS: what it includes, which models it fits, why genuine parts matter, how to install it yourself, common issues, and where to buy it. Whether you’re maintaining a URS 01, URS LT, or an earlier Gen 1 model, this post has you covered.

What Exactly Is the Headset URS?

The Headset URS is BMC’s official replacement headset assembly for the UnReStricted (URS) gravel bike family. It’s a complete, ready-to-install kit that restores smooth, precise steering and protects the integrated cable routing (ICS) system that makes the URS so clean and aero.

Unlike generic headsets, the Headset URS is engineered to match the exact tolerances, bearing angles, and cone shapes required by the URS frame and forks. It supports both flat-steerer (ICS) and round-steerer forks, making it incredibly versatile.

Key Features of the Headset URS

• Premium Bearings: MR155 upper bearing + MR170 lower bearing – sealed cartridge bearings built for long life in muddy, dusty gravel conditions.
• Dual Cone Compatibility: Includes top cones for both flat-steerer (ICS) and round-steerer forks.
• Full Kit: Compression bolt, top cap, split ring, nylon compression ring, rubber seals, and fork crown race – everything you need in one box.
• Lightweight: Just 102 g for the complete assembly.
• ICS-Optimized: Designed to work seamlessly with BMC’s internal cable routing through the headset.
• Black Finish: Clean, stealthy look that matches the modern URS aesthetic.

Compatibility – Which BMC URS Models Does It Fit?

The Headset URS is officially compatible with:

• URS 01 (all model years from MY20 onward)
• URS Gen 1
• URS LT
• URS 01 / URS / URS LT (MY20–MY23)
• URS AL / Roadmachine X AL (certain 2022+ variants)

If your bike has the “UnReStricted” branding and ICS cable routing through the headset, this is the correct part (SKU 302090).

What’s Actually Included in the Box?

When you order the genuine Headset URS kit, you receive:

1. Upper bearing (MR155)
2. Lower bearing (MR170)
3. Top cone for flat steerer (ICS)
4. Top cone for round steerer
5. Compression bolt
6. Top cap
7. Split ring / compression ring
8. Rubber seals
9. Fork crown race

Everything is pre-matched and ready for installation.

BMC SPARE HEADSET URS 1 PIECE – Garys Cycles | Home of Trek Bikes

Why Use Genuine Headset URS Instead of Aftermarket Options?

• Perfect fit with ICS routing – aftermarket headsets often cause cable binding or poor seal performance.
• Correct bearing angles prevent premature wear.
• Maintains warranty coverage (many BMC dealers require genuine parts for claims).
• Proven durability in real-world gravel and adventure riding.

Step-by-Step Installation Guide for Headset URS

Installing the Headset URS is a straightforward job for anyone comfortable with basic bike tools. You’ll need:

• Headset press tool
• Headset cup remover (or improvised drift)
• Torque wrench
• Grease
• Clean rags

Step 1: Remove old headset (knock out old cups and bearings). Step 2: Press in new lower and upper cups if required (most URS frames are press-fit). Step 3: Install fork crown race (use a race setter or PVC pipe). Step 4: Grease bearings and install lower bearing + dust cover. Step 5: Slide fork through frame, install upper bearing, cone, compression ring, spacers, stem, and top cap. Step 6: Torque top cap to 5–8 Nm and check for smooth rotation with no play.

Pro tip: Always check bearing preload after the first 50–100 km of riding. A tiny bit of play can turn into a creak fast on gravel.

Common Headset Issues on BMC URS Bikes (and Fixes)

From owner forums and service reports, here are the most frequent problems:

• Creaking after wet rides → usually dried-out seals; regrease or replace seals.
• Slight play / “clunk” on bumps → overtightened or upside-down compression ring (common mistake).
• Cable routing feels tight → wrong cone used (flat vs round steerer).
• Bearing failure after 2–3 years → normal on high-mileage gravel bikes; replace with Headset URS.

Where to Buy Genuine Headset URS

Official BMC dealers, BMC’s webshop, and trusted online retailers (Bike24, BicycleHero, etc.) stock the Headset URS. Expect to pay $100–130 depending on region. Always verify the SKU 302090 and “Headset URS” description.

Final Thoughts

The Headset URS is a small but critical part that keeps your BMC gravel bike steering beautifully for thousands of kilometers. Whether you’re replacing a worn headset or doing preventative maintenance, going with the genuine kit ensures perfect compatibility, smooth performance, and peace of mind.

If your URS has started feeling less “unrestricted” up front, don’t wait – grab the Headset URS and get back to riding the way BMC intended.