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 Add to shopping bag H-Tetra adaption bars for mounting brake and shift lever to frame $120.00 Add to shopping bag R-Steering Compensator $125.00 Select options Flag $25.00 Select options H-Carbon fiber foot rests $750.00