Check the listing for details. Avian Titanium Square Tapered Bottom Bracket 113mm. Condition: New. Listed at 150.00 USD. The AVIAN Titanium Square Tapered Bottom Brackets are designed for frames with a standard 68mm threaded bottom bracket shell, found on most Mini through Expert XL size BMX race frames. The bottom bracket features a lightweight titanium square tapered spindle, sealed cartridge bearings, carbon fiber shell wrap and titanium crank bolts.SPECIFICATIONSFit: 68mm Euro bottom bracket shellsSpindle Length: Available in 113mm spindle length option. Spindle length will be determined by your frame, crank and rear wheel alignment and may vary.Tools Required: Park Tool BBT-32 (or like tool) and 8mm Allen Wrench113mm: 6.70ozRIDER WEIGHT LIMIT: 120lbs