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The eleven-tooth upper and thirteen-tooth lower size and profile with 5mm bolt-holes are designed as an upgrade for most 11 and 12 speed Shimano GRX 2X rear derailleurs
Static load - 809lbf / 3
radial suspension bearing - 15mm x 28mm x 7/10mm -
combined with deep race grooves in these bearings for greater lateral support for the twisting and multi-directional forces associated with mountain bike pivots
This kit include two sets of replacement seals and a pair of bearing retainers to replace any parts that may become damaged during periodic disassembly and cleaning
BBT-020 - Shimano New Dura Ace/XTR, Ultegra/XT Pro Cup Tool TH-873 The eleven-tooth upper and thirteen-toothBBT 020 Shimano New Dura Ace XTR, Ultegra XT Pro Cup Tool This tools allow you install and remove the newer threaded bottom brackets Shimano with the smaller outer diameter cups. One side works for Dura Ace and XTR while the other side fits Ultegra and XT cups. It features a 3 8 inch drive on the backside for use with a torque wrench or breaker bar. Precision manufactured of the same aluminum alloy as our BB cups to ensure solid no mar cup
