The Shimano Tiagra RS500 bottom bracket is an external BB for 2-piece (cap-free) road bike chainsets. It is excellent value for money.

Shimano Bottom Bracket BBRS500 BS cups

Rated 4.9 out of 5 stars
10 Reviews


Barcode: 4524667926177

The Shimano Tiagra RS500 bottom bracket is an external BB for 2-piece (cap-free) road bike chainsets. It is excellent value for money.

£13.95 RRP £22.99SAVE 39%


Delivery Information

We have a range of delivery options on orders. Most importantly, if your order is over £50 then delivery is free!

All Biketart orders are fully trackable. You will get a tracking number by email when your order is shipped which will allow you to track it with Royal Mail or DPD.

In-stock orders placed by 4pm will be processed the same day.

Any items displaying "in-stock with supplier, despatched in 2-3 days" on the product page cannot be despatched the same day as they will be shipped to us from the supplier when you place your order.

Read on to discover the delivery options available to you on your order.

Delivery Services

Standard Tracked: All orders over £50 are eligible for free standard tracked delivery by Royal Mail. For orders under £50 there is a £2.99 charge. Orders sent using standard tracked are usually delivered in 2-3 days.

Priority Tracked: For £3.99 your order is sent by premium tracked delivery which gives a 1-2 day (including Saturdays) delivery timescale. This service is provided by Royal Mail who will usually deliver on Saturdays. Orders must be placed by 4pm.

Next Day Courier: If you require next-working-day delivery then this is provided by DPD and is £6.99. Orders must be placed by 3.30pm and be fully in-stock in order to be processed before our daily DPD collection.

Saturday Delivery: You can select Saturday delivery options from DPD at the checkout.

Bike Delivery: Bikes are always delivered by courier. After placing a bike order your bike is fully assembled and tested before being carefully boxed for shipping. Because of this build process it is not always possible to offer next-day delivery on a bike. Please do get in touch if you want to know a specific despatch day on any bike on our website. Call us on 01227 832582 or email

Returns Info

We offer a 30 day return period on our items. We ask that items are returned in their original packaging and in re-sellable condition. We do not pay returns postage.unless we have made an error with your order.

We cannot accept the return if the item is not correctly packaged and is damaged in transit during the return trip back to us.

    Please do not stick any tape or labels to the products branded outer packaging.

      If you require an exchange it is recommended that you re-order the correct size/item and return the item you do not wish to keep to us for a refund.

        Customer Reviews

        Rated 4.9 out of 5 stars
        Based on 10 reviews
        Total 5 star reviews: 9 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
        100%would recommend this product
        10 reviews
        • IB
          Ian B.
          Verified Buyer
          I recommend this product
          Rated 4 out of 5 stars
          9 seconds ago
          So far, so good....

          I have used (and abused!) a good number of these bottom brackets over the years, fitted on road bikes, and MTBs.

          Initially they always feel nice and smooth, and just spin away quietly doing their job... however, I've found that the seals can be a bit suspect (invairiably on the less protected, non-drive side) given a particularly good dousing in water, after say, a torrential rainstorm, or momentary ducking in flood water!

          I have removed the bb, when it started knocking/grinding, after these occasions, and in the early days, found the centre tube (supplied with the bb) half full of water, and as a result, the bearings had been running in a water bath. As the tube is fitted with rubber sealing rings, the water could not escape.

          As a result of these premature failures of the bb, I now throw the inner tube away (which enables any injested water to escape) and as a secondary precaution, drill a 1/8inch hole in the lowest point of any bikes bb shell. As a result, I've found the bb's last a lot longer.

          The last bb bearing, which this new one has replaced, lasted about 4 years, of regular wet weather riding.

          Just to put it in context, though... I've got an INTERNAL sealed square tapered bb, which has been in two different commutor bikes, and it is still spinning sweetly, with no play, after 20+ years!

        • CF
          Calvon Ford (.
          Verified Buyer
          I recommend this product
          Rated 5 out of 5 stars
          4 days ago
          replacement bb

          all good, very happy.

        • SG
          Simon G.
          Verified Buyer
          I recommend this product
          Rated 5 out of 5 stars
          1 week ago
          Cheap and functional like-for-like replacement

          At this great Biketart price why wouldn't you change your BB every couple of years or so? Never got to the stage where one 'fails', but don't to either!

        • ND Profile picture for Nige logo
          Nige D.
          Verified Buyer
          I recommend this product
          Rated 5 out of 5 stars
          3 weeks ago
          Perfect replacement

          Perfect replacement for the least replacement that only lasted a couple of years through winter riding conditions so ordered another as the price was very competitive. Good communication from company and quick delivery, would use again.

        • CD
          clive dewhurst (.
          Verified Buyer
          I recommend this product
          Rated 5 out of 5 stars
          1 month ago
          bottom bracket

          spot on guys perfect fit all good , thanks

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