10 Best Mtb Bottom Bracket of December 2025

• Made of Aviation Aluminum,3D Forged Process,Light weight, High Quality Surface Anodizing.
• Crank Length: 170mm; Diamter of Alxe:24mm; Chain Ring BCD:104mm.
• BB of Frame: BC1.37*24T-68/73mm Screw BB, it is suitable for Press BB92 also.
• Gifts: Aluminum Alloy Lock Screw( M18), 4 Bolts for Chain Wheel .
• Compatible with:Shimano,Sram(need 24mm to 22mm Conversion kit)，FSA, Gaint ATX770 ATX770-D XTC 750

VUNDO

• 【Crank Arm】6061-T6,Hollowtech 2 Integrated Design; The Latest Surface Treatment Technology Improves Surface Hardness, More Wear-Resistant
• 【Chainring】7075 Aviation Aluminum Alloy;CNC Process,Narrow Wide GXP Driect Mount ,32T/34T/36T/38T,Suitable for 7s 8s 9s 10s 11s 12s
• 【Bottom Bracket】6061-T6,BSA/BC1.37*24T(Threaded)
• 【Nice Replacement】Compatible with SHIMANO SRAM Sensah LTWOO Microshift

VUNDO

• One oversized spindle to work across every bottom bracket standard 
• Gutter Seal Technology drastically improves sealing against the elements 
• Significantly lighter than GXP system
• Sealed cartridge bearings 

SRAM

• One oversized spindle to work across every bottom bracket standard.
• Significantly lighter than PFGXP system
• Easier installation by allowing you to press the bearing cups into the frame
• Two fully sealed cartridge bearings

SRAM

• Superlight and strong Ceramic bearings offer lower rotational mass for more efficient transfer of power to the road
• Ceramic Nitride Pro Series diamond polished bearings by World Champions ACER Racing
• Ceramic bearings require 78% less energy than the most efficient bottom brackets on the market
• Choose from: 68mm / 73mm Red for Shimano Mountain Bike Cranksets - 68mm Red for SRAM Road Cranksets - 68mm Red for SRAM Road Cranksets -

ACER Racing

• Type: Pressfit BB92
• Shell Diameter: 41 mm
• Shell Width: 89.5/92 mm
• Axle Diameter: 24 mm (Hollowtech II)
• recommended for Saint FC-M820 / XT FC-M780, FC-M782, FC-M785, XT FC-T780 / SLX FC-M670, FC-M672, FC-M675, FC-M677 / ZEE FC-M640 / Deore FC-M610, FC-M612, FC-M615 / FC-M622, FC-M625

SHIMANO

• Also fits most other 24mm spindle external mountain BB systems
• 24mm X-Type
• 68/73mm wide

RaceFace

• Mtb
• Hollowtech II
• 2 items

SHIMANO

• Fitment:: 66-73mm bottom bracket shell and 24mm crank shaft.
• Thread Type: Thread type BB fit for mountain bike, and thread type is 1.37*24T.
• Smooth: Smooth, Especially sealed high precision Peilin axis.
• Durable: Water and dust resistance. High Precision Sealing Bearing.
• High Quality: Made of Aluminum Alloy & PP, this bottom bracket is solid and durable with a long use.

Lixada

• Material: The Bottom Bracket is made of Aluminum + Bearing.Made of high quality materials, solid and durable.
• Easy installation: The Bottom Bracket lightweight and small size, easy to install and use.
• Application: Suitable for removing BB30//PF30/BB386 press-fit type bottom brackets, and installing most hollow threaded bottom bracket bearings.
• Sturdy: The Bottom Bracket characterized by high strength and high hardness, not easy to deform.Great accessory for cycling enthusiasts.
• Guarantee:6 monthes' free replacement or fully refund if you do not satisfied with the product.

Acici