Shimano BB-UN300 Bottom Bracket - English 68 x 107mm Spindle Square Taper JIS Tarp Shelters a large external pocket for

a large external pocket for toiletries and a hidden RFID security pocket

Enhanced microfilter performance: Our re-engineered membrane and custom backwash accessory means better performance against sand and silt

Bicycle bottom brackets occasionally require removal for service

Grip Shift Specific: Yes

All pocket bags are mesh-lined for fast water drainage

Shimano BB-UN300 Bottom Bracket - English 68 x 107mm Spindle Square Taper JIS Tarp Shelters a large external pocket forSHIMANO Square Type Bottom Bracket MTB Standard Structure SHIMANO quality performance cartridge bearing square bottom bracket Better chainline stability with chain line stabilizer Series: Shimano Tourney TX800 Series Fits JIS square taper cranksets Available in regular fit or fit for a full enclosed chain case Hollow spindle Crankarm fixing bolts sold separately Adapter material: Aluminum