Solve bottom bracket fit issues instantly with this 6061 aluminum adapter ring. Converts 41mm / 46mm / 51.3mm shells to standard 33.5mm, enabling perfect mid drive motor installation. Durable anodized black finish, lightweight, and corrosion-resistant for long-term use.
KEY FEATURES
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DESIGNED FOR MID DRIVE MOTOR: Converts large BB shells to 33.5mm for BAFANG and TONGSHENG mid drive motors. 
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EASY INSTALLATION: Installs in minutes with no extra tools; fits over the motor axle for a quick, secure setup. 
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DURABLE MATERIAL: Made of 6061 aluminum alloy with anodized black finish, ensuring strength and corrosion resistance. 
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WIDE COMPATIBILITY: Works with BBS01, BBS02, BBSHD, TSDZ8, TSDZ16, and TSDZ2 mid drive motor systems. 
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MULTIPLE SIZE OPTIONS: Choose from 41mm, 46mm, or 51.3mm to match your frame’s bottom bracket size precisely. 
SPECIFICATIONS
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Product Name: Bottom Bracket Adapter Ring 
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Material: Aluminum Alloy 6061 
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Finish: Anodized Black 
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Inner Diameter (Standard): 33.5mm 
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Available Sizes (Outer): 41mm / 46mm / 51.3mm 
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Thickness: 10mm (0.39in) 
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Compatibility: BAFANG, TONGSHENG, TOP7ven Mid Drive Motors 
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Compatible Models: BBS01, BBS02, BBSHD, TSDZ8, TSDZ16, TSDZ2, DM01, DM02 
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Application: Bottom Bracket Conversion for eBike Mid Drive Motor 
PACKAGE INCLUDED