Shimano
Shimano BB-UN300 Square Type Bottom Brackets
Shimano BB-UN300 Square Type Bottom Brackets
Couldn't load pickup availability
Shimano is the world's leading manufacturer of bicycle components, renowned for precise engineering and reliable performance across all cycling disciplines.
Overview
The Shimano BB-UN300 Square Type Bottom Brackets provides smooth, drag-free pedalling through precision sealed cartridge bearings. The bottom bracket is one of the most overlooked but highest-impact upgrades on a bicycle — worn or poorly fitted bearings rob significant power and cause creaking that's difficult to diagnose.
Key Specifications
- Shimano BB-UN300 Square Type Bottom Brackets
Shell Standard Guide
Identifying your frame's BB shell is critical before ordering:
BSA/English thread (68/73mm) — most common; left (NDS) is reverse thread
Italian thread (70mm) — both sides normal thread
PF30 (68×46mm bore) — press-fit, 30mm spindle
BB86/BB92 (86/92mm) — press-fit, common on Shimano-oriented bikes
T47 (threaded 47mm bore) — emerging standard combining press-fit shell size with threaded installation
Frequently Asked Questions
Where can I buy a bottom bracket online in India?
Buy SHIMANO and other quality bottom brackets at Ciclo Essentials. We stock threaded (BSA, Italian) and press-fit (PF30, BB86, T47) bottom brackets for all frame standards.
How do I know which bottom bracket my bike uses?
Identify your frame's BB shell standard: BSA/English thread (68/73mm, most common), Italian thread (70mm), PF30 (press-fit, 46mm bore), BB86/92 (press-fit, 41mm bore), T47 (threaded 47mm bore). Check your frame manufacturer's documentation.
What is the price of Shimano BB-UN300 Square Type Bottom Brackets in India?
The Shimano BB-UN300 Square Type Bottom Brackets is priced at at ₹990 at Ciclo Essentials.
My bottom bracket is creaking — should I replace it?
Creaking from the bottom bracket area is often caused by a dry or worn BB. First try removing it, cleaning the threads/shell, applying anti-seize (threaded) or carbon assembly paste (press-fit), and reinstalling. If the creak persists, replace the BB.
Shipping & Returns
Shipping & Returns
Free shipping on orders above ₹999. Delivered in 3–5 business days pan-India. 30-day hassle-free returns.
Warranty & Authenticity
Warranty & Authenticity
Every product is 100% genuine, sourced directly from the manufacturer. GST invoice included with every order.
Product FAQs
Is this product covered by a manufacturer warranty?
Yes. All products sold by Ciclo Essentials come with the full manufacturer warranty. A GST invoice is included with every order for warranty claims.
Do you offer returns or exchanges?
Yes — 30-day hassle-free returns on all unused, undamaged items in original packaging. Contact us on WhatsApp to initiate a return.
Is this product genuine and not a replica?
Absolutely. Ciclo Essentials sources directly from authorised distributors and brand-owned warehouses. Every product is 100% genuine with a valid GST invoice.
Questions & Answers
No questions yet — ask the first one and we'll answer within a few hours.
Ask a question
Shimano BB-UN300 Square Type Bottom Brackets
Recently Viewed
Free shipping above ₹999
Pan-India delivery, 3–5 business days
100% Genuine
Direct from manufacturer
GST Invoice
Valid for business reimbursement
30-day returns
No questions asked