Imagine what a crank would look like if it was designed by someone who knew exactly how to make bearings, and you, perform at peak efficiency. Believe it or not it would look like this; the GXP crank system: Quite possibly the most misunderstood crank system of all time. Come along with me as I quickly show you how GXP is supposed to work, and how to make it perform with mind-blowing results. GXP works by clamping everything onto the non-drive side bearing. When I tighten the arm down the assembly is held captive between the arm and the stop machined into the spindle right where the splines end. This ingenious method absolutely locates the crank in the bike accurately and eliminates the need for preload on the bearings, leaving them to spin freely. This worked brilliantly with bottom brackets that threaded in because there was no chance this non-drive assembly was going to get pushed out. Not so with pressfit, which is where to trouble comes in: The non-drive side is not rigidly fixed at all and in fact this system by nature wants to dislodge the entire non-drive side cup. Typically, GXP pressfit bottom bracket kits come with a wave washer because the manufacturers are aware of this possibility, and they are hoping to use the crank as a bolt to hold everything together in a balancing act that prioritizes bottom bracket retention at the cost of performance. Your performance. With a BBInfinite one-piece design bottom bracket there is no pressfit cup to become dislodged and no using the crank as a bolt to hold everything together, because it's already together, so there's no need for a (hold wave washer up) performance-sapping wave washer preloading bearings, because it shouldn't be there in the first place. GXP is arguably most efficient crank system available. When coupled with the most efficient bottom bracket available it's easy to see how you can become infinitely faster. Product Selection Section Which type of bottom bracket module do I need?? Email us at email@example.com and let know the bicycle frame type (e.g. road), frame manufacturer, frame model and model year, and crank type (manufacturer and model), and with this information we'll reply with a link directly to the product you need. Attach a few pictures showing the crank and bottom bracket area clearly, and one of the entire bicycle to aid us in our quest to get you on the right track. Creaking Bottom Bracket Section My bottom bracket is creaking and I've tried everything to fix it. How does a BBInfinite Bottom Bracket module fix a creaking problem? We fit creaking bottom brackets with proper engineering and precision machining. Watch this brief BBInfinite primer PressFit Perfection to get the lowdown on how we do it while all others fail. I heard that PressFit bikes just creak. Is that true? No, that is completely false information. PressFit bottom bracket offer the potential for the highest level performance possible, thanks to BBInfinite. There is no reason for your PressFit bike to creak, crunch, crack, or make any noises at all. Unless the frame is cracked the bike will be quiet. Can a creaking and popping bottom bracket damage my frame? Yes, it can. A creaking bottom bracket means there's movement between the bb and the frame. The more a bottom bracket creaks the more it is moving. This movement over time can wallow out the frame bottom bracket shell openings, enlarging them and elongating them, making them more susceptible to creaking and making it impossible to fit new bottom brackets. Don't freak out, it takes a long time. We've seen only a handful of bikes go in the junk heap due to bottom bracket shell ovalization. Install a BBInfinite module to save your frame, and your sanity.
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