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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- 100% genuine, authorised dealer, full manufacturer warranty
- Cash on delivery available
- GST invoice with every order
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Not sure about size or compatibility?
Shimano is the world's leading manufacturer of bicycle components, renowned for precise engineering and reliable performance across all cycling disciplines.
Overview
The SHIMANO 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
- 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
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.
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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
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