ECIOSL Full Carbon Fiber Bike Stem, 31.8mm Handlebar 28.6mm Steerer Tube, Ultralight Road MTB Bicycle Stem 70/80/90/100/110/120mm with Free Carbon Spacers (100mm stem)

• [Premium 3K Full Carbon Fiber Construction & Ultra-Light Weight] Made of high-grade 3K full carbon fiber, approx 120mm stem only 144g for standard size, drastically cut down front end weight for faster climbing and improved bike maneuverability, matte carbon finish wear-resistant and stylish.
• [Standard Universal Size Specification] Fits 28.6mm (1-1/8") fork steerer tube and 31.8mm diameter handlebars; available in multiple lengths:70/80/90/100/110/120mm to adjust riding reach for road bike, mountain bike and gravel bike.
• [Reinforced Aluminum Alloy Clamp Cover] Equipped with durable aluminum alloy locking cover on handlebar clamp position, enhance clamping strength to avoid slipping, protect carbon handlebar from crushing damage during installation.
• [Free Bonus Carbon Spacers Included] Package comes with free carbon headset spacers as gift, convenient for fine-tuning your handlebar height without extra purchase, one-stop upgrade for your bike front group.
• [Secure Stable Locking Structure] 4-bolt locking design (2 top + 2 front), evenly distribute clamping force, effectively avoid loosening during rough off-road or high-speed road riding, ensure long-term stable riding performance.

Optimize your bike cockpit with ECIOSL full carbon fiber bicycle stem, ideal upgrade for road, gravel and mountain cycling enthusiasts chasing lightweight performance. Constructed with high-quality 3K woven full carbon fiber, this stem features ultra-light weight around 140g±10g (120mm Bike Stem) while maintaining outstanding structural strength. Universal dimension matches 28.6mm steer tube and mainstream 31.8mm handlebars, multiple length options from 70mm to 120mm help you customize optimal riding posture. Aluminum alloy reinforced clamp prevents over-clamping damage to carbon handlebars, reliable four-bolt fastening keeps handlebar firmly fixed on bumpy trails. Besides, free matching carbon spacers are included inside package to adjust your headset height flexibly. Perfect replacement stock stem for racing, commuting and long-distance endurance cycling.