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TruVativ Howitzer XR ISIS Bottom Bracket Bracket 2009 The 2009 TruVativ Howitzer XR bottom brackets are for Truvativ cranksets that are designated Howitzer compatible. Sealed oversized cartridge bearings, XR model has forged aluminum cups, Compatible with TruVativ cranksets that use the Howitzer BB.
Truvativ does not list spindle lengths for Howitzer BBs; 51mm and 56mm chainline are used with 68 and 73mm BB shells, except CR2545 is for 83mm shell and CR2544 is for 100mm shell |
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