Shimano BB-UN300 Bottom Bracket - English 68 x 113mm Spindle Square Taper JIS Model=B17 Carved Saddle 0mm 288mm J-bend Silver Box

0mm 288mm J-bend Silver Box of 100

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Shifting under load is made possible on the XX T-Type 10-52t cassette due to a combination of X-SYNC technology and cassette mapping creating seamless shifts even during your hardest power output

}MRP 1x V3 Alloy Chain Guide 28-38T BB Mount Black

Shimano BB-UN300 Bottom Bracket - English 68 x 113mm Spindle Square Taper JIS Model=B17 Carved Saddle 0mm 288mm J-bend Silver BoxShimano BB UN300 Bottom Bracket English 68 x 113mm Spindle Square Taper JIS. Shimano BB UN300 Square Spindle Bottom BracketsFits JIS square taper cranksets Crankarm fixing bolts sold separately Hollow spindle TECH SPECS Bottom Bracket Shell I. D. 1. 37 BB Frame Interface English BB Shell Width (mm) 68 Spindle Interface Type Square Taper JIS Spindle Length 113 Defined Color Black