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BB (BlackBox titanium spring tube)
Reduces peak brain rotational acceleration by up to 40% breakaway visor function for additional rotational impact force reduction
8mm Stem Weight 195g Face Plate Bolts 4 Stem Length 40mm Steerer Tube 1-1/8 Stem Angle 0° Stem Material Aluminum
Gender/Age Men's Color Stealth Material Synthetic Clamp Style Std Rails Defined Color Black Saddle Cut Out Yes Weight 270 Rail Material Steel
Industry Nine iRiX Upper Specialized IS42/28.6 Silver 5mm Model-Dropout 309 BB (BlackBox titanium spring tube)Customize and upgrade your cockpit with iRiX options Made exclusively for Specialized frames with molded in internal bearing cups. Frame 42mm ID with 6. 5mm depth to where the 45 degree taper begins Upper assemblies include star nut and top cover Top cover employ removable and replaceable silicone lip seals to keep the sealed, 440c stainless steel bearings contaminant free Compatible models: aluminum mountain bikes (except pre 2017 Chisel HT
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