BB3724
Trek developed their own BB standard to optimize their frame designs. BB90 has a 90.5mm shell width and 37mm inner diameter and is designed so that the bearings of external cups can hide within the frame.
24mm cranks fit into 37 frames when you have this Mortop Bottom Bracket. The kit consists of two bearings that are pressed into either side of the central opening.
Mortop bearing uses Nano lubricant with low drag, long life.
| Material: | Bearing steel |
| Spindle specifictions: |
Shimano: bearings for 24mm spindle Sram: bearings for 24/22mm spindle |
| Shell DIA: | 37mm |
| Shell width: | 90mm-95mm |
| Weight: |
Seal bearing, weight:50g Ceramic bearing, weight:47g |
|
Shimano Cartridge |
2 bottom bracket cups (except BB3724) 2 Mortop cartridge angular contact bearings for 24mm spindle 2 dust alloy covers 2 1mm spacer 2 5mm spacer 5ml syringe of Nano lubricant |
|
Shimano Ceramic |
2 bottom bracket cups (except BB3724) 2 Mortop ceramic angular contact bearings for 24mm spindle 2 dust alloy covers 2 1mm spacer 2 5mm spacer 5ml syringe of Nano lubricant |
|
Sram Cartridge |
2 bottom bracket cups (except BB3724) 2 Mortop cartridge angular contact bearings for 24/22mm spindle 2 dust alloy covers 2 1mm spacer 2 5mm spacer 5ml syringe of Nano lubricant 2 Spring Spacer Specifically designed for installing 22mm / 24mm spindle diameter cranks (SRAM / Truvativ GXP) the frames without the need for any adapters. |
|
Sram Ceramic |
2 bottom bracket cups (except BB3724) 2 Mortop ceramic angular contact bearings for 24/22mm spindle 2 dust alloy covers 2 1mm spacer 2 5mm spacer 5ml syringe of Nano lubricant 2 Spring Spacer Specifically designed for installing 22mm / 24mm spindle diameter cranks (SRAM / Truvativ GXP) the frames without the need for any adapters. |