Shimano Ultegra R8100 Crankset

An integral part of Shimano's new 12-speed road lineup, the Ultegra R8100 Crankset builds upon Shimano's legendary front shifting and transmission efficiency. With new refinements for seamless 12-speed shifting, this crankset brings next level performance to any rider's bicycle.

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Optimal balance of stiffness, strength, weight and rotational performance
HOLLOWGLIDE structure cuts weight while maintaining strength for better power transfer and quicker, more precise front shifting
HOLLOWTECH II design elevates pedaling efficiency while remaining incredibly lightweight
Wider gear pitch increases clearance between chain and leading teeth, providing compatibility with more frames

Size	165mm, 34x50t	165mm, 36x52t	170mm, 34x50t	170mm, 36x52t	172.5mm, 34x50t	172.5mm, 36x52t	175mm, 34x50t	175mm, 36x52t
Length	165mm	165mm	170mm	170mm	172.5mm	172.5mm	175mm	175mm
Teeth	34x50t	36x52t	34x50t	36x52t	34x50t	36x52t	34x50t	36x52t
Speed	12 HG+	12 HG+	12 HG+	12 HG+	12 HG+	12 HG+	12 HG+	12 HG+
BCD	110mm	110mm	110mm	110mm	110mm	110mm	110mm	110mm
Chainline	44.5mm	44.5mm	44.5mm	44.5mm	44.5mm	44.5mm	44.5mm	44.5mm
Offset	Standard	Standard	Standard	Standard	Standard	Standard	Standard	Standard
Crank type	Shimano Hollowtech II	Shimano Hollowtech II	Shimano Hollowtech II	Shimano Hollowtech II	Shimano Hollowtech II	Shimano Hollowtech II	Shimano Hollowtech II	Shimano Hollowtech II
Threading	9/16"(15mm)	9/16"(15mm)	9/16"(15mm)	9/16"(15mm)	9/16"(15mm)	9/16"(15mm)	9/16"(15mm)	9/16"(15mm)
Material	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Weight	700g	711g	700g	711g	700g	711g	700g	711g

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