Shimano BBUN300 bottom bracket British thread 73 1225 mm LL

£23.99
68 - 107 MM
68 - 110 MM
68 - 110 MM CHAINCASE
68 - 113 MM
68 - 115 MM
68 - 117.5 MM
68 - 117.5 MM CHAINCASE
68 - 118 MM
68 - 118 MM CHAINCASE
68 - 122.5 MM (LL123) CHAINCASE
68 - 122.5 MM E-TYPE
68 - 1225 MM
68 - 1275 MM
73 - 113 MM
73 - 118 MM
73 - 122 MM
In Stock
Part Number:

BBUN300C23

GTIN/UPC:

4550170622190

  • A good quality bottom bracket for traditional chainsets
  • Super-accurate bearings for smooth operation and improved durability
  • Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting
  • Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life
  • Fast and easy installation without adjustment
  • Narrow body allows clearance for cable routing under the bottom bracket

More reasons to buy from us

We price match all products on a like for like basis.

To qualify the item must be available in stock with a UK supplier and any additional costs taken into consideration.

i.e delivery charges, buyers premium, assembly charges.

Call us on 01823 252499 before you make your purchase to enquire about price matching a product.

Please read our full price match policy.

With all bike sales you will receive an informational bike pack that contains a 15% Off accessories voucher inside.

This voucher is redeemable at your nearest Bicycle Chain, Rock & Road or Climb On Bikes Store.

We currently have stores in Yeovil, Taunton, Bridgwater, Weston-Super-Mare and Hereford.

This is part of our 'Support Local Business' initiative, where we want to see local riders supported by their local bike shops.

We hope to see you in store soon.

When you buy a bike from us in the store or come to collect your Click & Collect order we will adjust your new bike to fit you.

This includes adjusting saddle height, saddle position and where possible adjusting the brake levers / gear shifters.

We will also adjust any accessories you have purchased with your bike where applicable.

When you buy a bike from us you will get a free service at your nearest Bicycle Chain store within 6 weeks of taking delivery of your bike.

The free service is put in place to make sure the bike you have purchased is running correctly and to adjust out any cable stretch that happens to any new bike.

The type of bike you have bought and the type of riding you have planned will affect how soon you need to book your free service.

  • Light use - 6 weeks
  • Daily commuting / moderate use - 4 weeks
  • Hard / aggressive use - After the first 2 rides

However if you experience any issues at any time you should stop riding your bike and book your bike in for its free service immediately.

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  • Mon - Sat: 9.00am - 17:30pm
  • Sunday: Closed