Theory Euro Bottom Bracket
Best durable component for reliable and smooth cycling performance.
A reliable, sealed solution for threaded frames that keeps your drivetrain spinning smoothly. With multiple spacer options included, it makes dialing in the perfect chainline straightforward and hassle-free. This component is built for durability and consistent performance, ensuring your setup remains reliable through every ride.
$39.95
In stock
at
Stacked BMX Shop
Who it's for
- Bike owners seeking versatile and easily replaceable components.
- Riders prioritizing longevity and low maintenance for their drivetrain.
- DIY enthusiasts and riders who prefer self-servicing their bikes.
Who should skip it
- Riders with modern or non-standard BMX frame designs.
- Users sensitive to noise or those who prefer silent operation.
- Performance-focused riders prioritizing minimal bike weight for competition.
Performance breakdown
Bearing smoothness
Sealed cartridge design delivers consistent, low-friction rotation in all conditions.
Chainline adjustability
Generous spacer kit makes dialing in perfect sprocket alignment incredibly straightforward.
Weather sealing
Robust seals effectively repel grit and moisture to extend component lifespan.
Build durability
High-grade 6061 T-6 aluminum construction handles aggressive daily riding with ease.
Installation simplicity
Standard threaded interface ensures a hassle-free upgrade for most frame setups.
Structural integrity
Included tube spacer prevents bearing crushing during high-torque crank installation.
Key Specs
Outer Size
Euro (threaded)
Inner Size
19mm or 22mm
Tube Spacer Material
6061 T-6 Aluminum
Cone Material
6061 T-6 Aluminum
Non-Drive Side Cone Thickness
10mm
Drive Side Cone Thickness
5mm
Spacers
6 x 2.5mm
Know before you buy
Still have a question?
Ask Metto anything about the Theory Euro Bottom Bracket before you decide.
