The Shimano Alivio BB-MT501 Threaded Bottom Bracket is designed for 68mm and 73mm shell widths, providing efficient power transfer with its HOLLOWTECH II design. With better sealing and rotation the SHIMANO DEORE bottom bracket delivers high driving efficiency. Enhanced sealing performance protects against dirt and moisture, ensuring durability and longevity. Perfect for mountain and recreational biking.
Gutter Seal Technology drastically improves sealing against the elements while reducing seal drag. We’ve designed a fresh cup forging for a high-end look.
FEATURES
Gutter Seal Technology™ drastically improves sealing against the elements
The BBT-19C is used to remove and install external bearing crankset bottom brackets. Fits external bearing bottom brackets with 16 external notches and an outside diameter of approximately 44mm.
Precision CNC machined aluminium tool for the installation and removal of 16-notch external bearing bottom brackets. Anodized for easy identification and featuring a ratchet/torque wrench compatible 3/8″ drive.
The BBT-29 is a double-ended bottom bracket wrench designed to fit 16-notch bearing cups with an outside diameter of 39mm (e.g. Shimano® Dura-Ace® 9000 series and XTR® 980 series) as well as 16-notch bearing cups with an outside diameter of 48.5mm (e.g. FSA® MegaEvo®).
The SRAM DUB bottom bracket series has a simple job—connect your crankarms and protect the smooth, long-lasting application of power to your drivetrain. To allow that singular focus, we’ve engineered the DUB spindle to be the one true unifying component. One oversized spindle to work across every bottom bracket specification. For better crankarm compatibility. For better protection from the elements. For longer-lasting performance. To be stronger, smoother, simpler. Now, back to the ride.
FEATURES
One oversized spindle to work across every bottom bracket specification
Sealed cartridge bearings available in both stainless and ceramic versions
TECHNOLOGY
DUB
The relationship between bottom bracket spindle and bearing is the core of DUB technology. It’s where stiffness meets durability. We took it a step beyond conventional thinking and made everything simpler—better integrating the relationship between chainring, crank, spindle and bottom bracket. It’s this approach to developing a complete system that equals better drivetrain performance.