Shimano
Shimano Bottom Bracket BB-UN300 BSA 73MM, 122.5MM(LL123), W/O FIXING BOLT
Shimano Bottom Bracket BB-UN300 BSA 73MM, 122.5MM(LL123), W/O FIXING BOLT
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Shimano is the world's leading manufacturer of bicycle components, renowned for precise engineering and reliable performance across all cycling disciplines.
Overview
The SHIMANO MTB-OTHERS Bottom Bracket BB-UN300 ( Select Option=BSA 73MM, 122.5MM(LL123), W/O FIXING BOLT) 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
- MTB-OTHERS Bottom Bracket BB-UN300 ( Select Option=BSA 73MM
- 122.5MM(LL123)
- W/O FIXING BOLT)
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 MTB-OTHERS Bottom Bracket BB-UN300 ( Select Option=BSA 73MM, 122.5MM(LL123), W/O FIXING BOLT) in India?
The SHIMANO MTB-OTHERS Bottom Bracket BB-UN300 ( Select Option=BSA 73MM, 122.5MM(LL123), W/O FIXING BOLT) 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
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Shimano Bottom Bracket BB-UN300 BSA 73MM, 122.5MM(LL123), W/O FIXING BOLT
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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