90mm E-Bike bottom bracket
,double bearing crank axle
,Hitway BK5 electric bike parts
Reliago 90mm E-Bike Bottom Bracket Double Bearing Crank Axle for Hitway BK5 Electric Bike
Product Overview
Reliago 90mm Bottom Bracket Double Bearing Crank Axle for BK5 Electric Bike
Upgrade your Reliago BK5 electric bike drivetrain system with this durable 90mm bottom bracket, designed for smooth crank rotation, reliable power transmission, and long-lasting performance.
Featuring a double bearing structure and a 145mm spindle length, this bottom bracket provides stable support for the crankset while reducing friction during pedaling.
Designed specifically for bicycles using a 9cm bottom bracket shell, this crank axle assembly is an ideal replacement component for BK5 electric bikes, folding e-bikes, fat tire bicycles, and custom bicycle builds that require a strong and reliable drivetrain solution.
Product Specifications
| Specification Item | Detailed Parameters |
| Product Name | E-Bike Bottom Bracket |
| Brand | Reliago |
| Model Number | BK5-BB |
| Shell Width | 90mm |
| Bearing Structure | Dual Bearing |
| Axle Type | Crankset Spindle |
| Total Spindle Length | 145mm |
| Installation Position | Bicycle Bottom Bracket |
| Compatible Bike | BK5 Electric Bike |
Core Product Features
Designed specifically for bicycle frames with a 90mm BB shell width.
Equipped with a dual bearing system to improve smoothness and durability.
Manufactured with strong materials to withstand daily riding loads.
The bottom bracket is a key drivetrain component that transfers rider and motor-assisted power through the crank system.
Application Scenarios
Ideal replacement bottom bracket for Reliago BK5 electric bicycles.
Suitable for compact folding electric bikes requiring durable drivetrain components.
The 90mm shell compatibility makes it suitable for wider bicycle frame designs.
A practical component for bicycle builders and repair professionals.
Frequently Asked Questions (FAQ)
Q1: What is a bicycle bottom bracket?
A: A bottom bracket is the bearing assembly inside the bicycle frame that connects the crankset to the frame and allows the crank to rotate smoothly.
Q2: What bottom bracket size is this product?
A: This model is designed for a 90mm bottom bracket shell width.
Q3: What is the spindle length?
A: The total spindle length is 145mm.
Q4: Is this suitable for electric bikes?
A: Yes. It is designed for Reliago BK5 e-bikes and compatible electric bicycle applications.
Q5: What are the benefits of double bearings?
A: Double bearings help reduce friction, improve rotation smoothness, and increase durability compared with basic bearing systems.
