Hope 30mm Stainless Steel Bottom Bracket 68/73/83mm Purple
If you need a threaded bottom bracket for a BSA shell and a 30mm crank axle, this Hope stainless steel bottom bracket in purple is built for riders who want smooth running, strong sealing and long-term durability. It is a smart upgrade for road, MTB, DH and fatbike builds where reliability matters just as much as finish quality.
Browse more bottom brackets, shop Hope components in stock, or get fitting support from the Cyclo Monster workshop.
Why choose this product
- Designed for riders who want a premium threaded bottom bracket for 30mm axle cranksets.
- Replaceable stainless steel bearings help reduce friction and support greater durability.
- Double-sealed bearings and a free-running labyrinth seal help improve bearing life and smoothness.
- The purple finish is ideal for riders building a bold Hope colour-matched bike.
- It suits road, MTB, DH and fatbike use on compatible bikes.
Who it’s for
- Riders replacing a worn BSA threaded bottom bracket on a 30mm axle setup.
- Bike builders upgrading from a lower-grade unit to a more durable and serviceable option.
- Performance riders who want dependable sealing and smoother long-term running.
- Anyone matching purple Hope components across a custom build.
Real-world performance
This is the sort of upgrade riders choose when they want a bottom bracket that feels dependable through regular UK riding conditions rather than simply getting the bike back on the road. The stainless bearing option and sealing setup are aimed at longer service life, lower drag and more consistent feel over time. On a compatible bike, that means less compromise and more confidence in a core drivetrain part.
Compatibility and sizing guidance
- Check your frame standard. This bottom bracket is for frames with a BSA threaded shell, not press-fit frames.
- Check your shell width. This version is intended for 68mm, 73mm and 83mm setups.
- Check your crank axle. Your crank must use a 30mm axle for this to be the right fit.
- Check your install tools. For Hope 30mm threaded bottom brackets, a specific Hope fitting tool may be required.
Comparison
When riders compare bottom brackets in this category, the main differences usually come down to shell standard, axle size, seal quality and long-term serviceability. This Hope model is the right fit if you want a BSA threaded unit for a 30mm crank and prefer a premium serviceable option over a cheaper short-term replacement. It also makes sense if colour matching matters to your build and you want a distinctive purple finish rather than a neutral look.
Is it right for you
This is a strong choice if you have a BSA threaded frame, a 30mm axle crank and you want a bottom bracket that combines durability, lower-friction bearings and premium finish quality. It is especially well suited to riders who want their drivetrain to feel reliable in day-to-day riding and still look purposeful in a custom build.
Do not buy this if your frame is press-fit, your crank spindle is not 30mm, or you have not confirmed your shell width. If you need help checking your bike before ordering, contact Cyclo Monster or book fitting with the Derby workshop.
Expert insight
A bottom bracket is one of the most important hidden upgrades on a bike. Riders tend to notice them only when they feel rough, wear too quickly or become a source of drag and noise. On the right bike, this Hope unit stands out because it balances threaded fit security, strong sealing and replaceable stainless bearings with the sort of finish quality riders expect from a premium UK brand.
Frequently asked questions
Is this Hope bottom bracket for a 30mm crank axle?
Yes. This model is designed to suit cranks with 30mm axles.
Will this fit any threaded bike frame?
No. Your frame must use a BSA threaded shell and the correct shell width as well as the correct 30mm crank axle.
Is this a good choice for UK riding conditions?
Yes. The sealing and stainless bearing setup is designed to support durability and smoother long-term running.
Can I use this for road and MTB bikes?
Yes. It is suitable for road, MTB, DH and fatbike use on compatible setups.
Is this better than a cheaper threaded bottom bracket?
It is a better fit for riders who value durability, serviceability and smooth running over the lowest upfront cost.
Do I need a special tool to install it?
For Hope 30mm threaded bottom brackets, a specific Hope fitting tool may be required.
When should I avoid buying this model?
Avoid it if your frame is press-fit, your crank axle is not 30mm, or your shell width does not match the compatible sizes.
Why choose the purple version?
The purple finish is ideal for riders building a standout Hope-themed bike or matching existing purple components on the build.