Bike Bottom Brackets

Unlock smoother pedalling and improve drivetrain efficiency with our comprehensive Bike Bottom Brackets collection. Whether you need threaded, press‑fit, external, ceramic or traditional cartridge types, we stock components built for durability, low friction, and compatibility with modern cranksets. Explore options from brands like Shimano, SRAM, Enduro Bearings, Wheels Manufacturing &...

Unlock smoother pedalling and improve drivetrain efficiency with our comprehensive Bike Bottom Brackets collection. Whether you need threaded, press‑fit, external, ceramic or traditional cartridge types, we stock components built for durability, low friction, and compatibility with modern cranksets.

Explore options from brands like Shimano, SRAM, Enduro Bearings, Wheels Manufacturing & more. Filter by spindle type, shell width & bearing quality to find the perfect bottom bracket for your frame and drivetrain. Enjoy expert advice, genuine parts and reliability you can trust.

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  • Yst Threadless Cartridge Bottom BracketYst Threadless Cartridge Bottom Bracket

    Yst Threadless Cartridge Bottom Bracket - Chrome

    A great solution for repairs on bicycles with square taper cranksets where the bicycle frame has damaged or stripped threads in the bottom bracket. The patented design YST BB-993 threadless cartridge unit threads to itself and has bevelled cups for snug fit. Durable Steel...
    £18.98
    £23.00
    £18.98
    Save £4.02
    • Chrome
  • Genetic Karyotype Cartridge Bb Bottom Bracketgenetic bottom bracket karyotype cartridge bb p96764

    Genetic Karyotype Cartridge Bb Bottom Bracket - Black, Silver

    High quality traditional style Cr-Mo JIS square axle BB with precision cartridge bearings lightweight forged Alloy cups and Carbon Fibre spacer. Supplied with Hex cap type bolts. 103, 107 or 110.5mm sizes. A great choice for that ultimate lightweight fixie machine. Weight: 230g
    £30.23
    £35.00
    £30.23
    Save £4.77
    • Black, Silver
  • Shimano Bb-Es300 Bottom Bracketshimano bottom bracket bb es300 bottom bracket p55329

    Shimano Bb-Es300 Bottom Bracket

    Splined bottom bracket for use with Shimano Octalink chainsets Oversize BB spindle - large 22 mm diameter hollow cold forged chrome-moly pipe billet spindle reduces weight, increases strength and rigidity Octalink splined axle/crank arm interface - results in more rigid crank assembly compared to...
    from £24.85
    £29.99
    from £24.85
    Save £5.14
  • Wheels Manufacturing Bb30 Eccentric Bottom Bracketwheels manufacturing bottom bracket bb30 eccentric bottom bracket p65748

    Wheels Manufacturing Bb30 Eccentric Bottom Bracket - Black

    Eccentric bottom bracket for use in BB30 frames Convert your frame to a single-speed or fixed-gear setup with these simple to use bottom brackets Fits shell widths from 68mm to 73mm Fully serviceable 2 year warranty on bearings Made in the USA!
    £140.88
    £169.99
    £140.88
    Save £29.11
    • Black
  • Wheels Manufacturing Bsa Threaded Frame Abec-3 Bearings For 30Mm Cranks Bottom BracketWheels Manufacturing Bsa Threaded Frame Abec-3 Bearings For 30Mm Cranks Bottom Bracket

    Wheels Manufacturing Bsa Threaded Frame Abec-3 Bearings For 30Mm Cranks Bottom Bracket - Orange

    Our solution for running a 30mm spindle crankset in a BSA threaded frame. Machined aluminum cups thread in to a standard threaded frame and feature Enduro 6806 ABEC-3 sealed bearings outboard of the BB shell. Fully serviceable.Serviceable, double lip sealed Enduro bearings USA machined...
    £78.72
    £94.99
    £78.72
    Save £16.27
    • Orange
    • Blue
    • Purple
    • Teal
  • Sram Pressfit 30 To Bsa Adapter Bottom Bracketsram bottom bracket pressfit 30 to bsa adapter p44542

    Sram Pressfit 30 To Bsa Adapter Bottom Bracket

    Pressfit 30 To Bsa Adapter 83mm
    £32.18
    £38.00
    £32.18
    Save £5.82
  • Sram Bb Gxp Team Cups Bottom BracketSRAM BB GXP Team Cups English MTB & Road 73/68:

    SRAM BB GXP Team Cups English MTB & Road 73/68:

    Bb Gxp Team Cups English
    £32.18
    £38.00
    £32.18
    Save £5.82
  • Race Face Cinch Bb92 Bottom Bracket 24Mm External Seal Bottom Bracketrace face bottom bracket cinch bb92 bottom bracket 24mm external seal p124019

    Race Face Cinch Bb92 Bottom Bracket 24Mm External Seal Bottom Bracket

    Allows use of all Race Face, Shimano and select FSA 24mm diameter spindle cranksets (MTN or ROAD) in 41mm diameter Press-Fit (Shimano Type) BB Shell Frames. Precision CNC machined and anodized aluminum alloy cups: More accurate, durable and stable press-fit interfaces than the competitors'...
    £36.82
    £49.95
    £36.82
    Save £13.13
  • Wheels Manufacturing Bb90 Abec-3 Bearings For 24Mm Cranks Bottom BracketWheels Manufacturing BB90 ABEC-3 Bearing For 24mm Cranks

      Wheels Manufacturing BB90 ABEC-3 Bearing For 24mm Cranks

      Replacement ABEC-3 Bearings for Trek BB90 bottom brackets Featuring an internal diameter of 24mm and an external diameter of 37mm High quality steel cartridge bearings for a high quality repair Where most bearings available after market are grade 300 (up to 3/10 of a...
      £14.02
      £16.99
      £14.02
      Save £2.97
    • Shimano Bottom Bracket Saint Bottom Bracketshimano bottom bracket bottom bracket saint p42470

      Shimano Bottom Bracket Saint Bottom Bracket - Gold

      Genuine Shimano HollowTech II bottom bracket assembly Length of screw thread is increased to enable the fitment of chain devices Set includes left and right hand cups, spacers, inner cover, and inner O-rings Light weight seal structure helps to remove vital grams Sealed cups...
      £33.14
      £39.99
      £33.14
      Save £6.85
      • Gold
    • Shimano Bottom Bracket 5500 Bottom BracketShimano Bottom Bracket 5500 Bottom Bracket

      Shimano Bottom Bracket 5500 Bottom Bracket

      Splined bottom bracket designed for use with Shimano road Octalink crankset Oversize BB spindle - large 22 mm diameter chrome-moly hollow pipe billet spindle reduces weight, increases strength and rigidity Octalink splined axle/crank arm interface - results in a more rigid crank assembly compared...
      £47.23
      £56.99
      £47.23
      Save £9.76
    • Race Face Cinch Pf30 Bottom Bracket 83Mm 30Mm External Seal Bottom BracketRace Face Cinch Pf30 Bottom Bracket 83Mm 30Mm External Seal Bottom Bracket

      Race Face Cinch Pf30 Bottom Bracket 83Mm 30Mm External Seal Bottom Bracket

      FEATURES Standard 6806 retainer bearings Bearings are external to the BB shell resulting in a stiffer wider stance Bearings are factory filled with Phil wood grease Cups are machined for a high tolerance frame fit SPECIFICATION Built for: XC/AM/FR/DH Weight: 106g Colours: Black Compatibilty:...
      £36.82
      £49.95
      £36.82
      Save £13.13
    • Race Face Cinch Bb107 Bottom Bracket 30Mm External Seal Bottom Bracketrace face bottom bracket cinch bb107 bottom bracket 30mm external seal p123993

      Race Face Cinch Bb107 Bottom Bracket 30Mm External Seal Bottom Bracket

      Race Face Cinch BB92 Bottom Bracket FEATURES Custom 19 ball flanged retainer bearings Allow the use of a 30mm spindle with Shimano press fit shells without decreasing ball bearing size Bearings races are fully coated for improved corrosion resistance Bearings are factory filled with...
      from £41.00
      £64.95
      from £41.00
      Save £23.95
    • Race Face Cinch Bb92 Bottom Bracket 30Mm Double Row External Seal Bottom Bracketrace face bottom bracket cinch bb92 bottom bracket 30mm double row external seal p123973

      Race Face Cinch Bb92 Bottom Bracket 30Mm Double Row External Seal Bottom Bracket

      Race Face Cinch BB92 Bottom Bracket 30mm Double Row External Seal FEATURES Custom 19 ball flanged retainer bearings Allow the use of a 30mm spindle with Shimano press fit shells without decreasing ball bearing size Bearings races are fully coated for improved corrosion resistance...
      from £47.87
      £64.95
      from £47.87
      Save £17.08
    • Shimano Bb-7700 Dura-Ace Bottom Bracketshimano bottom bracket bb 7700 dura ace bottom bracket p109683

      Shimano Bb-7700 Dura-Ace Bottom Bracket - Silver, Black

      Precision engineered Dura-Ace 7700 bottom bracket for road Octalink splined system 22 mm diameter chrome-moly hollow pipe billet axle reduces weight Splined interface provides a more rigid crank assembly compared to tapered counterparts Compound bearing structure - ball and needle bearings support the spindle...
      £95.30
      £114.99
      £95.30
      Save £19.69
      • Silver, Black
    • Shimano Bb-7700 Dura-Ace Bottom Bracket Without Seals Bottom BracketShimano Dura-Ace BB-7700 Dura-Ace bottom bracket 68 - 109 mm without seals

        Shimano Dura-Ace BB-7700 Dura-Ace bottom bracket 68 - 109 mm without seals

        Precision engineered Dura-Ace 7700 bottom bracket for road Octalink splined system 22 mm diameter chrome-moly hollow pipe billet axle reduces weight Splined interface provides a more rigid crank assembly compared to tapered counterparts Compound bearing structure - ball and needle bearings support the spindle...
        £58.00
        £69.99
        £58.00
        Save £11.99
      • Sram Bottom Bracket Dub Spacer Kit MTB/Road V3 (Including 2.0 4.5 5 6.0 6.5 7.5 8.5 9.0 10.5 & 2 Pieces Of 2.5 3.0 5.5Mm) & 2 Standard Bsa 68 Al Spacers Bottom BracketSRAM Spare - Bottom Bracket DUB Spacer Kit MTB/Road V3 (Including 2.0, 4.5, 5, 6.0, 6.5, 7.5, 8.5, 9.0, 10.5 & 2 Pieces of 2.5, 3.0, 5.5mm) & 2 Standard BSA 68 Al Spacers:

          SRAM Spare - Bottom Bracket DUB Spacer Kit MTB/Road V3 (Including 2.0, 4.5, 5, 6.0, 6.5, 7.5, 8.5, 9.0, 10.5 & 2 Pieces of 2.5, 3.0, 5.5mm) & 2 Standard BSA 68 Al Spacers:

          Sram: Use only SRAM parts with SRAM components. Installation of parts and accessories not originally intended could result in less than optimal performance and/or injury. For in-depth service information on SRAM products, refer to our website at www.sram.com/service. SPECIFICATIONSSpares Category: SPACER
          £13.20
          £16.00
          £13.20
          Save £2.80
        • Praxis Works Bb M30 Thru 386 Evo Bottom BracketPraxis - BB M30 THRU - 386 EVO

            Praxis - BB M30 THRU - 386 EVO

            M30 Thru BBThe Praxis M30 Thru BB is designed to be a proper bottom bracket (BB) for installing the Praxis Lyft Carbon Crank, RaceFace "Cinch", Rotor ¢ ‚¬Å“REX ¢ ‚¬  MTB Crank or CaneCreek eeWings. The Praxis patent pending design keeps the Enduro...
            £39.98
            £45.00
            £39.98
            Save £5.02
          • Praxis Works Bb M30 Road Bb386 Evo Bottom BracketPraxis - BB M30 - ROAD BB386 Evo

              Praxis - BB M30 - ROAD BB386 Evo

              M30 BOTTOM BRACKETS ARE FOR PRAXIS M30 CRANKS WITH 30/28MM STEPPED AXLES. STRAIGHT 30MM AXLES WILL NOT FIT. Praxis M30 Press Fit bottom brackets are designed to be a proper bottom bracket (BB) for installing Turn M30 spindle based cranks in either; €¢ BB30,...
              £39.98
              £45.00
              £39.98
              Save £5.02
            • Praxis Works Bb M30 Bb86/Bb90/Bb92 Ceramic Bottom BracketPraxis - BB M30 - BB86/BB90/BB92 - Ceramic

                Praxis - BB M30 - BB86/BB90/BB92 - Ceramic

                This is the Praxis M30 Press Fit Bottom Bracket (ceramic) for installing a Praxis M30 crank into a BB30, PF30, BB86/90/92, 386EVO, BBRight or Specialized OSBB frame.
                £162.83
                £185.00
                £162.83
                Save £22.17
              • Praxis Works Bb M30 Road Bb386 Evo Ceramic Bottom BracketPraxis - BB M30 - ROAD BB386 Evo CERAMIC

                  Praxis - BB M30 - ROAD BB386 Evo CERAMIC

                  M30 BOTTOM BRACKETS ARE FOR PRAXIS M30 CRANKS WITH 30/28MM STEPPED AXLES. STRAIGHT 30MM AXLES WILL NOT FIT. Praxis M30 Press Fit bottom brackets are designed to be a proper bottom bracket (BB) for installing Turn M30 spindle based cranks in either; €¢ BB30,...
                  £140.40
                  £160.00
                  £140.40
                  Save £19.60
                • Praxis Works Bb M24/Sram/Gxp/Isis2 Bb86/Bb92 Bottom BracketPraxis - BB M24/SRAM/GXP/ISIS2 - BB86/BB92

                    Praxis - BB M24/SRAM/GXP/ISIS2 - BB86/BB92

                    This is our Praxis M24 BSA threaded bottom bracket for installing steel spindle Praxis M24, Oval Concepts M24, and SRAM Gxp cranks into BSA Threaded 68/73mm Road or MTN frame.
                    £39.98
                    £45.00
                    £39.98
                    Save £5.02
                  • Praxis Works Bb M30 Bb Right Road 79Mm R-Collet Ceramic Bottom BracketPraxis - BB M30 - BB RIGHT ROAD 79mm R-Collet CERAMIC

                      Praxis - BB M30 - BB RIGHT ROAD 79mm R-Collet CERAMIC

                      M30 BOTTOM BRACKETS ARE FOR PRAXIS M30 CRANKS WITH 30/28MM STEPPED AXLES. STRAIGHT 30MM AXLES WILL NOT FIT. Praxis M30 Press Fit bottom brackets are designed to be a proper bottom bracket (BB) for installing Turn M30 spindle based cranks in either; €¢ BB30,...
                      £162.83
                      £185.00
                      £162.83
                      Save £22.17
                    • Praxis Works Bb M30 Bb Right Road 79Mm R-Collet Bottom BracketPraxis - BB M30 - BB RIGHT ROAD 79mm R-Collet

                        Praxis - BB M30 - BB RIGHT ROAD 79mm R-Collet

                        M30 BOTTOM BRACKETS ARE FOR PRAXIS M30 CRANKS WITH 30/28MM STEPPED AXLES. STRAIGHT 30MM AXLES WILL NOT FIT. The Praxis Works M30 BBRIGHT ROAD bottom bracket is our M30 BB for installing M30 spindle based road cranks on BB Right Cervelo road frames. Steel...
                        £66.30
                        £75.00
                        £66.30
                        Save £8.70
                      • Praxis Works Bb M30 Thru MTB 73Mm Bb30/Pf30 R- Collet Bottom BracketPraxis - BB M30 THRU - MTB 73mm BB30/PF30 R- Collet

                          Praxis - BB M30 THRU - MTB 73mm BB30/PF30 R- Collet

                          The Praxis M30 thru bottom bracket is designed to be a proper bottom bracket (BB) for installing the Praxis Lyft Carbon Crank. It will also work with RACE FACE "CINCH" or Rotor "REX" MTB cranks into 73mm BB30/PF30 mountain frames. The Praxis patent pending...
                          £66.30
                          £75.00
                          £66.30
                          Save £8.70
                        • Praxis Works Bb M30 MTB 73Mm Bb30/Pf30 R-Collet Bottom BracketPraxis - BB M30 - MTB 73mm BB30/PF30 - R-Collet

                            Praxis - BB M30 - MTB 73mm BB30/PF30 - R-Collet

                            M30 BOTTOM BRACKETS ARE FOR PRAXIS M30 CRANKS WITH 30/28MM STEPPED AXLES. STRAIGHT 30MM AXLES WILL NOT FIT. Praxis M30 Press Fit bottom brackets are designed to be a proper bottom bracket (BB) for installing Turn M30 spindle based cranks in either; €¢ BB30,...
                            £66.30
                            £75.00
                            £66.30
                            Save £8.70
                          • Praxis Works Bb Conv Sram/Gxp/Isis2 MTB 73Mm Bb30/Pf30 Bottom BracketPraxis - BB CONV - SRAM/GXP/ISIS2 MTB 73mm BB30/PF30

                              Praxis - BB CONV - SRAM/GXP/ISIS2 MTB 73mm BB30/PF30

                              The Praxis Works SRAM bottom bracket converter GXP/ISIS 2 is designed to be a proper bottom bracket BB for installing SRAM GXP/ISIS2 cranks in either BB30, PF30, or Specialized €™s OSBB road frames. Our patent pending design keeps the cartridge bearings outboard of the...
                              £66.30
                              £75.00
                              £66.30
                              Save £8.70
                            • Praxis Works Bb Conv Shimano 24Mm MTB 73Mm Bb30/Pf30 Bottom BracketPraxis - BB CONV - Shimano 24mm MTB 73mm BB30/PF30

                                Praxis - BB CONV - Shimano 24mm MTB 73mm BB30/PF30

                                Ok...so you have BB30, PF30 (Please See Notes in Spec) or a Specialized OSBB frame, but you need to run a Shimano crank? No worries. Our Praxis Works Conversion Bottom Bracket is just what you're looking for. Made to fit in either BB30 or...
                                £66.30
                                £75.00
                                £66.30
                                Save £8.70
                              • Praxis Works Bb Shimano 24Mm MTB 73Mm Bsa Bottom BracketPraxis - BB - Shimano 24mm MTB 73mm BSA

                                  Praxis - BB - Shimano 24mm MTB 73mm BSA

                                  Our standard BSA English threaded BB is Shimano „¢ compatible. The 7075 T6 alloy cups feature CNC finishing and standard anodizing. Smooth and durable, the high-grade Enduro 2437 steel bearings are fully sealed and are a fantastic replacement BB for your Shimano „¢ drivetrain....
                                  £39.98
                                  £45.00
                                  £39.98
                                  Save £5.02
                                • Praxis Works Bb M30 Road 68Mm Bb30/Pf30 R- Collet Ceramic Bottom BracketPraxis - BB M30 - ROAD 68mm BB30/PF30 - R- Collet CERAMIC

                                    Praxis - BB M30 - ROAD 68mm BB30/PF30 - R- Collet CERAMIC

                                    M30 BOTTOM BRACKETS ARE FOR PRAXIS M30 CRANKS WITH 30/28MM STEPPED AXLES. STRAIGHT 30MM AXLES WILL NOT FIT. Praxis M30 Press Fit bottom brackets are designed to be a proper bottom bracket (BB) for installing Turn M30 spindle based cranks in either; €¢ BB30,...
                                    £162.83
                                    £185.00
                                    £162.83
                                    Save £22.17
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