The RCB X Series Taper Handlebar (28.6mm) is a premium cockpit upgrade designed for riders who demand superior strength and a more aggressive riding ergonomics. Unlike standard 22.2mm handlebars, the X Series features a tapered design—meaning it is thicker (28.6mm) at the clamping area for maximum rigidity and tapers down to a standard 22.2mm at the ends to fit your existing grips and levers.
This handlebar is a favorite for naked bikes like the Yamaha MT-15 and XSR 155, as well as adventure and street-fighter builds.
Key Features
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Tapered “Fatbar” Design: The 28.6mm oversized diameter at the center significantly reduces handlebar flex. This provides more direct feedback from the front wheel, giving you better control during high-speed cornering or off-road maneuvers.
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High-Grade 6061-T6 Aluminum: Constructed from aircraft-grade aluminum alloy, the X Series offers an incredible strength-to-weight ratio. It is much more resistant to bending in the event of a tip-over compared to stock steel bars.
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Sandblasted & Anodized Finish: The surface undergoes a specialized sandblasting process to create a premium matte texture, followed by deep anodizing. This makes the handlebar highly resistant to scratches, UV fading, and corrosion.
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Laser-Etched Positioning Grid: Features a precise laser-etched scale at the center clamping point. This allows you to align the angle of the bars perfectly, ensuring a symmetrical and ergonomic setup.
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Vibration Damping: The alloy composition and tapered wall thickness help to absorb high-frequency engine vibrations, reducing hand fatigue (arm pump) during long-distance rides.
Technical Specifications
| Feature | RCB X Series Tapered Bar Details |
| Center Diameter | 28.6mm (Requires Oversized Risers) |
| End Diameter | 22.2mm (Fits Standard Grips/Controls) |
| Material | CNC Machined 6061-T6 Aluminum |
| Width | Street-Performance standard (Approx. 720mm–750mm) |
| Series | X Series (Premium Performance) |
Why Upgrade to the RCB X Series?
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Enhanced Ergonomics: The X Series typically offers a lower and wider “rise” compared to stock bars, putting the rider in a more “attack” oriented position. This is ideal for improving the handling characteristics of the MT-15.
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Unmatched Aesthetics: The oversized center and high-quality finish give your motorcycle a “Big Bike” look, instantly transforming the appearance of your workstation.
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Durability: Steel handlebars are prone to rust and permanent bending. The RCB X Series aluminum bar is built to withstand the elements and the stresses of spirited riding.
Installation Note
Since the center diameter is 28.6mm, this handlebar is not a direct fit for bikes with standard 22.2mm clamps. You will need to install RCB 28.6mm Universal Handlebar Risers to mount these correctly. When installing, ensure that your brake hoses and throttle cables have enough slack to reach the ends of the bars at full steering lock.
