Product Details
Discover Superior Performance
Experience the pinnacle of cycling with the Shimano BB-UN300K Bottom Bracket. Crafted for riders who demand excellence, this square type bottom bracket delivers unbeatable quality and performance. This is the chain case structure version.. Cartridge Bearing: Engineered with precision cartridge bearings, this bottom bracket ensures smooth and efficient pedalling, elevating your riding experience
. Chain Line Stabiliser: Enjoy enhanced chain-line stability, reducing chain-related issues and keeping your ride on track
. Versatile Structures: Choose from three available structures - Standard, E-type, and chain case options - to match your specific riding needs
. Crank Arm Fixing Bolts NOT includedTechnical Specifications
. Model No: BB-UN300K
. Axle Length/Shell Width: 117.5mm/68mm (BC1.37)
. Adapter Material: Aluminium
What Sets Alchemy Apart
The best pre-owned bikes
When you buy a pre-owned bike from Alchemy Cycle Trader, you’re getting more than just a great deal. Every bike is roadworthy certified, comes with a 3-month warranty, and includes your first service free - so you can ride away with complete confidence.
Buy with confidence
In-house Active Thermography Carbon Fibre Testing for extra peace of mind on pre-owned bikes.
Learn more about our carbon testing.
Expert Servicing & Ongoing Support
Our professional workshop team is here to keep your bike running at its best long after you’ve taken it home. From routine servicing to performance tuning, our qualified mechanics ensure your ride stays smooth, safe, and ready for every adventure. Whether it’s your first free service or future maintenance, you can count on Alchemy Cycle Trader for trusted support and expert care. Learn more about our workshop services.
