In fact, I followed those instructions in my first attempt to remove the crankarm, but the outer bolt came off at the same time as the inner bolt, so I was dumbfounded. Once I cleaned, re-greased, and re-installed everything, the self-extracting system worked fine. The Truvativ Tech Manual has instructions on re-installation and proper torque. Buy Truvativ Descendant DH or other bicycle mtb handlebars at Bike Depot. Starting at $109.99, Truvativ, Descendent DH, Riser bar, Clamp: 31.8mm, W: 800mm, Rise: 25mm The description below is based on the Shimano® brand of bottom bracket, but most other cartridge type bottom bracket bearing units install in a similar fashion. NOTE: Shimano® XTR BB950 bottom bracket and Dura-Ace BB-7700 bottom brackets are adjustable type bottom brackets. See Adjustable-Type Bottom Brackets. The bar's dimensions are the result of feedback from professionals and TruVativ's history of producing gravity kit like the Boobar—though we should note that the Descendant DH is even wider than the Boobar, better suiting it to today's more aggressive courses, bikes, and riding styles. A handlebar suited for today's aggressive DH courses The Race Face Crank Boots hug the tips of your crankarms to protect them from the inevitable bashing and crashing of gnarly riding. Pedals must be removed for installation, but once they're on, Race Face's proprietary plastic blend takes the abuse so your crankarms don't. The SRAM GXP Team Bottom Bracket features Gutter Seal Technology to reduce friction and weight for smooth-spinning performance. Brand specific, this bottom bracket can only be installed with SRAM and Truvativ cranksets, due to its left side bearing, which uses a smaller diameter to fit with the stepped spindle of SRAM's cranks. Cranks protection kit for Truvativ Descendant 6k 170/175mm. The Chameleon Skin Cranks protection kit protects your cranks from scratches, scuffs, small dents, dirt, abrasions, stone shot, impacts and during bike transp