CarboXtrem
Upper Steering Cover for Gemini Handlebar
Upper Steering Cover for Gemini Handlebar
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- Custom made. 100% compatible.
Perfect fit guarantee.
- Manufacturing time 2 weeks. Shipping within 24/48 hours.
Top Cap for the Gemini Handlebar, designed specifically so you can tighten the headset spider directly.
Made from high-quality carbon fibre, this part guarantees durability and strength while also offering an attractive, functional solution for your bike.
The Top Cap for the Gemini Handlebar allows precise adjustment of the headset bolt, letting you tighten the headset to up to 5 Nm.
Standout features:
- Premium material: Made from solid carbon fibre, delivering light weight and superior strength.
- Compatibility: Designed exclusively for Gemini MTB handlebars.
- Personalised fit: Available in two models with -15º and -25º angles, to suit each rider's preference.
- Simple installation: Its design allows easy fitting and adjustment of the headset clamp bolt.
The Gemini Handlebar Top Cap stands out not only for its function but also for its elegant design, complementing the look of any mountain bike.
Whether you prefer a -15º angle for a more upright position or -25º for a more aggressive stance, we have the ideal option for you.
Optimise your riding and take your performance to the next level with the Top Cap for the Gemini Handlebar, an essential accessory for every keen cyclist.
Frequently asked questions
What is it for?
It lets you tighten the headset spider directly, with precise adjustment of the bolt up to 5 Nm.
What material is it made from?
Solid carbon fibre, which delivers light weight and superior strength.
What is it compatible with?
It is designed exclusively for Gemini MTB handlebars.
Technical specifications
Technical specifications
Who is this product ideal for?
Who is this product ideal for?
Frequently Asked Questions
Frequently Asked Questions
Warranty
Warranty
Lifetime warranty included.
Our components are designed and manufactured using high-precision 3D technology and certified materials.
That's why all CarboXtrem products include a lifetime warranty against any manufacturing defects .
If something goes wrong on our end, we'll fix it. No ifs, ands, or buts.
Model compatibility
Is your bike compatible?
Select your brand to check:
Some of our professionals
Carboxtrem, leader in 3D printing for high-performance cycling
At CarboXtrem we are specialists in 3D printed cycling components for those who don't accept the standard.
We design and manufacture aero bar ends, grips, saddles, and other key components with millimeter precision using materials such as carbon fiber and EPU 41 resin, used by leading brands such as Specialized and Adidas.
Each piece adapts to your body, your bike, and your discipline (road, triathlon, gravel). No one-size-fits-all. No pain. Just performance.
Why do they choose us?
At CarboXtrem we customize every coupler, every grip, every saddle...
| Feature | CarboXtrem | Other brands |
|---|---|---|
| Measures | Those of your body | Standards |
| Technology | Carbon 3D: 5 times stronger | Plastics |
| Vibration reduction | Up to -92% vibration reduction | Without active impact absorption |
| Injury prevention | Avoid neck, hand, and buttock pain due to poor fit | Causes chronic discomfort and fatigue |
| Mounting | Support for +250 models, step-by-step guidance | Low maneuverability |
STEP 1: Online Purchase and Direct Contact
After your purchase, we'll contact you via WhatsApp to begin the personalized process. No complex forms or waiting.
STEP 2: We guide you through taking your measurements
We'll send you visual instructions to collect the necessary information based on the product you purchase.
If it is Couplings:
- Height and weight
- Your biomechanical arm measurement
- Exact measurements of your handlebar
The entire process explained with step-by-step images.
STEP 3: We check and manufacture with precision
We compare your data with our model database. We've built for almost every model and brand available, as well as most biomechanics.
If something doesn't fit, we'll let you know before manufacturing.
We then manufacture your 100% custom product using Carbon3D technology (couplings, grips, saddle, etc.).
⏱ Manufacturing time: 5–7 days.
STEP 4: Receive, install and pedal
Express shipping in 24–48 hours.
You have support via WhatsApp or video call to help you assemble your kit correctly.
We also send you installation videos.