Shimano Dura-Ace R9100 Hollowtech II - Italian Bottom Bracket
When Do You Need the Shimano Dura-Ace R9100 Italian Bottom Bracket?
The Dura-Ace R9100 Hollowtech II Italian bottom bracket is the correct unit for road frames built with an Italian threaded BB shell, a standard common on many traditional Italian and European frame manufacturers including Pinarello, Colnago, and De Rosa. Italian threading uses a 70mm wide shell with right-hand thread on both the drive and non-drive sides, which is the critical difference from the English BSA standard. Installing the wrong threading version will result in a cross-threaded or improperly torqued bottom bracket, so confirming your frame's shell standard before ordering is essential.
Like the English version, the R9100 Italian BB uses Shimano's Hollowtech II outboard bearing design with sealed small-ball cartridge bearings positioned outside the frame shell for maximum load distribution, low rotational resistance, and easy field serviceability. It is compatible with any Shimano Hollowtech II road crankset using a 24mm spindle, including Dura-Ace R9100 and R9200, Ultegra R8000 and R8100, and 105 R7000. For riders on Italian-threaded frames who want a Dura-Ace-tier bottom bracket that matches the quality of the rest of their groupset, this is the correct part.
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Shimano Dura-Ace R9100 Hollowtech II - Italian Bottom Bracket
Shimano Dura-Ace R9100 Hollowtech II - Italian Bottom Bracket
When Do You Need the Shimano Dura-Ace R9100 Italian Bottom Bracket?
The Dura-Ace R9100 Hollowtech II Italian bottom bracket is the correct unit for road frames built with an Italian threaded BB shell, a standard common on many traditional Italian and European frame manufacturers including Pinarello, Colnago, and De Rosa. Italian threading uses a 70mm wide shell with right-hand thread on both the drive and non-drive sides, which is the critical difference from the English BSA standard. Installing the wrong threading version will result in a cross-threaded or improperly torqued bottom bracket, so confirming your frame's shell standard before ordering is essential.
Like the English version, the R9100 Italian BB uses Shimano's Hollowtech II outboard bearing design with sealed small-ball cartridge bearings positioned outside the frame shell for maximum load distribution, low rotational resistance, and easy field serviceability. It is compatible with any Shimano Hollowtech II road crankset using a 24mm spindle, including Dura-Ace R9100 and R9200, Ultegra R8000 and R8100, and 105 R7000. For riders on Italian-threaded frames who want a Dura-Ace-tier bottom bracket that matches the quality of the rest of their groupset, this is the correct part.
Original: $46.99
-70%$46.99
$14.10Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
When Do You Need the Shimano Dura-Ace R9100 Italian Bottom Bracket?
The Dura-Ace R9100 Hollowtech II Italian bottom bracket is the correct unit for road frames built with an Italian threaded BB shell, a standard common on many traditional Italian and European frame manufacturers including Pinarello, Colnago, and De Rosa. Italian threading uses a 70mm wide shell with right-hand thread on both the drive and non-drive sides, which is the critical difference from the English BSA standard. Installing the wrong threading version will result in a cross-threaded or improperly torqued bottom bracket, so confirming your frame's shell standard before ordering is essential.
Like the English version, the R9100 Italian BB uses Shimano's Hollowtech II outboard bearing design with sealed small-ball cartridge bearings positioned outside the frame shell for maximum load distribution, low rotational resistance, and easy field serviceability. It is compatible with any Shimano Hollowtech II road crankset using a 24mm spindle, including Dura-Ace R9100 and R9200, Ultegra R8000 and R8100, and 105 R7000. For riders on Italian-threaded frames who want a Dura-Ace-tier bottom bracket that matches the quality of the rest of their groupset, this is the correct part.
