H-Carbonbike bottom bracket adapters $100.00 This adaptor is used for reducing bearing size to 30mm. H-Carbonbike bottom bracket adapters quantity Add to shopping bag Description Additional Information Need Help? Contact Us Leave Feedback Contact Us Enter your contact details or email form shortcode here. (Text/HTML/Shortcodes accepted). Leave Feedback Enter your feedback modal content here. (Text/HTML/Shortcodes accepted). Share Related Products Select options HW-Carbonbike 650c Tri Spoke wheel $1,000.00 Add to shopping bag H-Open Carbon Fiber Footrests $350.00 Add to shopping bag Brake pads for carbon rims $25.00 Select options H-Carbon fiber foot rests $750.00