Campagnolo ProTech bottom brackets feature a patented external sealing ring design that protects a strong, resilient fiberglass-charged polyamide central tube from the harmful ingress of water, mud and grit. - Designed specifically for gravel riding and racing to protect against water, mud & grit

Campagnolo's Power-Torque OS-Fit Integrated Bottom Bracket Cups let you install your Power-Torque crankset (sold separately) into an oversize bottom bracket shell. They are constructed from anodized aluminum for low weight and excellent durability. And, they're available to fit frames with BB30 and BB86 bottom bracket shells.

The Hellbender70 bottom bracket utilizes a bearing made of 440C stainless steel, providing exceptional ride quality and reliability. The stainless steel bearing in the Hellbender 70 strikes a perfect balance between value and lasting performance. - 440C stainless steel bearings, dual lip seal, marine grease - Machined aluminum cups

The Hellbender 70 bottom bracket utilizes a bearing made of 440C stainless steel, providing exceptional ride quality and reliability. The stainless steel bearing in the Hellbender 70 strikes a perfect balance between value and lasting performance. - 440C stainless steel bearings, dual lip seal, marine grease - Machined aluminum cups

The Hellbender 110 Bottom Bracket provides an incredible mix of performance and longevity through the inclusion of Enduro XD-15 ceramic bearings. These bearings feature nitrogen-infused stainless steel races that will not rust or corrode paired with Silicon Nitride ceramic balls. - T47 for 30mm Spindles - Lifetime Guarantee

The Hellbender 110 Bottom Bracket provides an incredible mix of performance and longevity through the inclusion of Enduro XD-15 ceramic bearings. These bearings feature nitrogen infused stainless steel races that will not rust or corrode paired with Silicon Nitride ceramic balls. - Enduro XD-15 ceramic ball bearings are made from pure silicon nitride material with extreme high density and uniform compaction - The race material is an advanced stainless alloy that is nitrogen infused and will not rust or corrode - Dual stage anodize black and gold machined aluminum bottom bracket cups - Kluber NBU52 grease runs better and smoother with time and is highly resistant to being washed out - Designed for use with 30mm spindles

The Hellbender 110 Bottom Bracket provides an incredible mix of performance and longevity through the inclusion of Enduro XD-15 ceramic bearings. These bearings feature nitrogen-infused stainless steel races that will not rust or corrode paired with Silicon Nitride ceramic balls. - PF30 for 30mm Spindles - Lifetime Guarantee

Why We Make It We build bearings, so we build bottom brackets. The humble threaded bottom bracket is often the first part installed on a new frame, and the last one the rider thinks about during the life of the bike, but the bottom bracket has a direct effect on pedaling efficiency (read: speed). This is where you put your power into the bike. Having the absolute best interface between your effort and your bike’s forward momentum makes your ride better. The Threadfit™ 24 is how we make bikes that take 24mm cranks the best they can be. Why You Want It ThreadFit™ 24 fits 24mm cranks in BSA bottom bracket shells. Our ThreadFit™ 24 bottom bracket is designed and built to be durable, serviceable, and silent. Manufactured to create the most precise interface between your frame’s bottom bracket shell and your cranks, it makes your cranks spin lightly and easily, without interference, for the lifetime of your bike (with a little regular service). King’s legendary, angular-contact bearings, both steel and ceramic, are the best in the industry, and actually get faster over time, as their contact surfaces wear. You want this bottom bracket because it offers super low drag. You want this bottom bracket, because it can be opened, cleaned and repacked for years of faithful service. You want this bottom bracket, because you don’t want to think an awful lot about your bottom bracket. Our Threadfit™ 24 bottom brackets come in an array of beautifully anodized colors and each one includes a Fit Kits that allow our ThreadFit™ 24 to be used with a wide selection of road and mountain bike cranks. - Engineered, manufactured and assembled in Portland, Oregon USA - King Lifetime Warranty - Legendary made-in-house bearings - Available in 8 beautifully anodized colors - A Fit Kit is required for use and included in the purchase prices - Ceramic bearing upgrade available

Why We Make It We build bearings, so we build bottom brackets. The humble threaded bottom bracket is often the first part installed on a new frame, and the last one the rider thinks about during the life of the bike, but the bottom bracket has a direct effect on pedaling efficiency (read: speed). This is where you put your power into the bike. Having the absolute best interface between your effort and your bike’s forward momentum makes your ride better. The Threadfit™ 24 is how we make bikes that take 24mm cranks the best they can be. Why You Want It ThreadFit™ 24 fits 24mm cranks in BSA bottom bracket shells. Our ThreadFit™ 24 bottom bracket is designed and built to be durable, serviceable, and silent. Manufactured to create the most precise interface between your frame’s bottom bracket shell and your cranks, it makes your cranks spin lightly and easily, without interference, for the lifetime of your bike (with a little regular service). King’s legendary, angular-contact bearings, both steel and ceramic, are the best in the industry, and actually get faster over time, as their contact surfaces wear. You want this bottom bracket because it offers super low drag. You want this bottom bracket, because it can be opened, cleaned and repacked for years of faithful service. You want this bottom bracket, because you don’t want to think an awful lot about your bottom bracket. Our Threadfit™ 24 bottom brackets come in an array of beautifully anodized colors and each one includes a Fit Kits that allow our ThreadFit™ 24 to be used with a wide selection of road and mountain bike cranks. - Engineered, manufactured and assembled in Portland, Oregon USA - King Lifetime Warranty - Legendary made-in-house bearings - Available in 8 beautifully anodized colors - A Fit Kit is required for use - Ceramic bearing upgrade available

Enduro's entry level bottom bracket solution - Compatible with Sram GXP crankset spindles on BB92 framesets - ABEC-3 bearingss - Machined Delrin cups, Black Vendor Part # BK-6005

Enduro's entry level bottom bracket solution - Compatible with 24mm crankset spindles on BB30 framesets - ABEC-3 bearings - Machined Delrin cups, Black Vendor Part # BK-6018

Enduro's entry level bottom bracket solution - Compatible with Sram GXP crankset spindles on PF30 framesets - ABEC-3 bearings - Machined Delrin cups, Black Vendor Part # BK-6007

Enduro's entry level bottom bracket solution - Compatible with Sram GXP crankset spindles on BB30 framesets - ABEC-3 bearings - Machined Delrin cups, Black Vendor Part # BK-6016

Designed for frames with threaded BSA 68mm or 73mm BB shell - Compatible with SRAM DUB cranksets (28.99mm spindle) - Stainless steel angular contact bearings: 440C Stainless steel balls and races - Machined aluminum cups, Black ano Vendor Part # BKS-6056

440C stainless steel bearings pressed into precision machined aluminum T47 cups that simply thread directly into the BB shell. The T47A (Asymmetrical) specification is a new thread-in standard that has is similar in concept to BBRight (but with threads) that been used by a couple brands, including Cervelo and Factor. All Enduro bottom brackets are manufactured to the highest standards at the Enduro Bearings production facility in California, USA. For T47A frames using a 30mm BB386 spindle crank set. The bearings seat externally on the bottom bracket. Vendor Part # BKSR-0286

This TorqTite BB solution utilizes 440C stainless steel radial bearings pressed into precision machined aluminum TorqTite cups that simply thread together in the BB shell for a simple, secure, creak-free installation in non-threaded/press-fit BB shells. 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. All Enduro bottom brackets are manufactured to the highest standards at the Enduro Bearings production facility in California, USA. Requires Torqtite wrench for installation. Vendor Part # BKSR-0162

This TorqTite BB solution utilizes 440C stainless steel radial bearings pressed into precision machined aluminum TorqTite cups that simply thread together in the BB shell for a simple, secure, creak-free installation in non-threaded/press-fit BB shells. 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. All Enduro bottom brackets are manufactured to the highest standards at the Enduro Bearings production facility in California, USA. Requires Torqtite wrench for installation. Vendor Part # BKSR-0122

This TorqTite BB solution utilizes 440C stainless steel radial bearings pressed into precision machined aluminum TorqTite cups that simply thread together in the BB shell for a simple, secure, creak-free installation in non-threaded/press-fit BB shells. 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. All Enduro bottom brackets are manufactured to the highest standards at the Enduro Bearings production facility in California, USA. For PF30 bottom bracket shell, for use with 104mm + length spindle crankset. Requires Torqtite wrench for installation. Vendor Part # BKSR-0117

This TorqTite BB solution utilizes 440C stainless steel radial bearings pressed into precision machined aluminum TorqTite cups that simply thread together in the BB shell for a simple, secure, creak-free installation in non-threaded/press-fit BB shells. 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. All Enduro bottom brackets are manufactured to the highest standards at the Enduro Bearings production facility in California, USA. For PF30 bottom bracket shell, for use with less than 104mm length spindle crankset. Requires Torqtite wrench for installation. Vendor Part # BKSR-0132

Designed for frames with threaded BSA 73mm BB shell - Compatible with cranksets with a 24mm spindle. - Stainless steel angular contact bearings: 440C Stainless steel balls and races - Machined aluminum cups, Black ano Vendor Part # BKS-6042

Fits T47 frames with threaded BB shell (46mm ID x 68mm wide) - Compatible with most 24mm crank spindles (Shimano, FSA, etc) - Stainless bearings: Angular contact, 440C Stainless steel balls and races - Machined alloy cups - Made in the USA - Weight: 133g Vendor Part # BKS-0231

Fits T47 frames with threaded BB shell (46mm ID x 68mm wide) - Compatible with most 30mm crank spindles, splindle length under 90mm - Stainless bearings: Angular contact, 440C Stainless steel balls and races - Machined alloy cups - Requires TorqTite BB cup wrench for installation (sold separately) - Made in the USA - Weight: 105g Vendor Part # BKS-0201

Fits T47 frames with threaded BB shell, internal bearing cup for 86mm shell frames - Compatible with most 30mm crank spindles, spindle length 104mm or longer - Stainless bearings: Angular contact, 440C Stainless steel balls and races - Machined alloy cups - Made in the USA Vendor Part # BKS-0241

An Enduro original innovation, the TorqTite BB solution utilizes Angular Contact Stainless Steel bearings pressed into precision machined aluminum TorqTite cups that simply thread together in the BB shell for a simple, secure, creak-free installation in any non-threaded BB shell. - Fits BB30 frames (42mm ID), and replaces your BB30 bearings with the TorqTite BB system - Compatible with most 30mm crank spindles, at least 104mm long (386EVO, 3d+, etc) - Stainless bearings: Angular contact, 440C Stainless steel balls and races - Machined alloy cups - Bearings are spaced as wide as possible; provides a stiffer crank setup - Generally requires x2 TorqTite BB cup wrenches for installation (sold separately) - Made in the USA - Weight: 125g Vendor Part # BKS-0159

An Enduro original innovation, the TorqTite BB solution utilizes Angular Contact Stainless Steel bearings pressed into precision machined aluminum TorqTite cups that simply thread together in the BB shell for a simple, secure, creak-free installation in any non-threaded BB shell. - Fits PressFit 30 frames, 46mm ID BB shell - Compatible with most 24mm crank spindles (Shimano, FSA, etc). - Stainless bearings: Angular contact, 440C Stainless steel balls and races - Machined alloy cups - Bearings are spaced as wide as possible; provides a stiffer crank setup - Generally requires x2 TorqTite BB cup wrenches for installation (sold separately) - Made in the USA - Weight: 151g Vendor Part # BKS-0111

MaxHit is Enduro's latest patent-pending innovation; where the bearing is actually the component. MaxHit bottom bracket bearings are designed to thread directly into your bicycles bottom bracket shell, eliminating the need for the aluminum cups that are traditionally used to carry the bearings. This unique design frees-up space for much larger balls that more than double the load capacity compared to standard BB bearings. Machined entirely from 440C stainless steel and guaranteed for life, MaxHit BB bearings include proprietary double-lip labyrinth seals and Enduros extra high pressure grease to ensure a lifetime of trouble-free, heavy duty performance. Made in the USA Vendor Part # BKSM-8122

Enduro XD-15 Pro bearings offer a 15° angular contact sealed bearing in a standard-sized cartridge, pressed into precision machined aluminum cups. XD-15 Pro bearings feature deep-groove raceways allowing for maximum sized Grade 3 Silicon Nitride ceramic balls for for increased contact area and improved performance and longevity. For T47 threaded bottom bracket shell, and a Sram crankset with a 29mm spindle Made in the USA Vendor Part # BKC-0771

Enduro XD-15 Pro bearings offer a 15° angular contact sealed bearing in a standard-sized cartridge, pressed into precision machined aluminum cups. XD-15 Pro bearings feature deep-groove raceways allowing for maximum sized Grade 3 Silicon Nitride ceramic balls for for increased contact area and improved performance and longevity. For T47 Internal threaded bottom bracket shell, and a BB386 crankset with a 30mm spindle Made in the USA Vendor Part # BKC-0796

Enduro XD-15 Pro bearings offer a 15° angular contact sealed bearing in a standard-sized cartridge, pressed into precision machined aluminum cups. XD-15 Pro bearings feature deep-groove raceways allowing for maximum sized Grade 3 Silicon Nitride ceramic balls for for increased contact area and improved performance and longevity. For T47 Internal threaded bottom bracket shell, and a crankset with a 24mm spindle Made in the USA Vendor Part # BKC-0791

Enduro XD-15 Pro bearings offer a 15° angular contact sealed bearing in a standard-sized cartridge, pressed into precision machined aluminum cups. XD-15 Pro bearings feature deep-groove raceways allowing for maximum sized Grade 3 Silicon Nitride ceramic balls for for increased contact area and improved performance and longevity. For T47A threaded bottom bracket shell, and a crankset with a 24mm spindle. The bearing is seated externally on the bottom bracket. Made in the USA Vendor Part # BKC-0750