Detailed Specifications: Brand: Trek Model: Allant+ 9.9 / Diamant Zouma Supreme+ Stem Lengths Available: 45mm, 75mm, 95mm, 115mm Rise: 7° Steerer Tube Diameter: 28.6mm (1-1/8") Handlebar Clamp Diameter: 31.8mm Type: Threadless Accessory Compatibility: Blendr system Material: Aluminum Color: Black Defined Use: E-Bike / Commuter / Hybrid Additional Features: Designed specifically for Trek Allant+ 9.9 and Diamant Zouma Supreme+ e-bikes. Includes face plate and bolts for easy installation. Stem cap included to neatly conceal cable routing. Blendr compatible, allowing easy integration of lights, computers, or GoPro mounts. Durable aluminum construction provides a balance of lightweight strength and corrosion resistance. Multiple lengths available for customized fit and riding position. Important Usage Notes: Fits 1-1/8" threadless steerers and 31.8mm handlebars. Compatible with Trek Allant+ 9.9 and Diamant Zouma Supreme+ frames only. Does not include steerer tube bolt. Professional installation recommended to ensure safe fit and proper torque. In the Box: Trek stem (selected length) Face plate with bolts Stem cap Not Included: Steerer tube bolt Disclosure: This listing is for a genuine Trek Allant+ 9.9 / Diamant Zouma Supreme+ Stem, available in multiple lengths.Retail packaged and sourced directly from Trek.Includes only the items shown.