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The XStem Project is a build-in-public effort to create a modern stem for vintage Cannondale HeadShok bikes and modern setups alike. Subscriber feedback directly influences what gets designed, tested, and produced next, with small-batch parts supporting continued development.
A Modern Stem for Headshok. Finally. Pre-Orders Are Open 25 units. $499. Made in the USA. ISO 4210 validated. 1.56" Steerer | 31.8mm Handlebar | 60mm Length | 0deg Rise | 2-piece Clamp 6061-T6 aluminum. Machined in Nevada. Stainless 316 hardware. How it works: $100 refundable deposit reserves your spot. Balance of $399 due before shipping. I'll reach out personally to confirm your anodize preference (black or clear) and shipping details. Pre-order window closes May 25, 2026. If 25 deposits...
April 2026 XStem Project Update Where Things Stand The last update covered ISO validation and the fork in the road between a small-batch US run and a larger production effort at a lower price point. Since then, I've been deep in sourcing conversations. CNC shops in Oklahoma, New Hampshire, the UK, and Taiwan. Anodizing, laser etching, hardware, packaging. Every conversation taught me something, and several of those relationships will matter down the road. But here's what it comes down to....
March 2026 XStem Project Update ISO Results Are In The XStem has completed ISO 4210 mountain bike stem validation. Testing included: • Full MTB fatigue cycles (in-phase and out-of-phase)• 1600N and 2600N forward bending stages• 1000N lateral bending• 50Nm torsional security All tests were completed successfully. This wasn’t a parking-lot test ride. These were measured load cases under controlled conditions. Structurally, the XStem meets modern ISO mountain bike stem validation requirements....