T.D.C Vintage English Thread 118 mm Bottom Bracket

T.D.C Vintage English Thread 118 mm Bottom BracketOriginal part in production from the 1960s to the 1970s Lightweight for the era just 295 grams Suitable for historic cycling events such as L'Eroica Professionally checked & cleaned Worldwide shipping T. D. C bottom bracket, hailing from Great Britain and in production from the 1960s to the 1970s. Made from steel aluminium and weighing in at 295 grams pretty lightweight for a bottom bracket at that time. A fine choice for keeping your vintage bike

✓ Original part - in production from the 1960s to the 1970s
✓ Lightweight for the era - just 295 grams
✓ Suitable for historic cycling events such as L'Eroica
✓ Professionally checked & cleaned
✓ Worldwide shipping

T.D.C bottom bracket, hailing from Great Britain and in production from the 1960s to the 1970s. Made from steel/aluminium and weighing in at 295 grams - pretty lightweight for a bottom bracket at that time. A fine choice for keeping your vintage bike authentic, but also great for any other compatible bike too.

If you're taking part in L'Eroica or a similar vintage event, this is fully compliant - so rest assured, the pre-1987 police won't lock you up for having the wrong bottom bracket!

The bottom bracket's been carefully cleaned, thoroughly checked by one of our mechanics and graded as OK condition, but do take a good look at the detailed photos so you can see the cosmetic condition before you buy.

OVERVIEW

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Bearing / Race Condition - OK
Production Era - 1960s & 1970s
Country - British
Material - Steel/Aluminium
Weight - 295 g
Stock Code - U-BB71V

TECHNICAL INFO

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Thread Type - English Thread (British/ISO 1.37" x 24 TPI)
Axle Length - 118 mm
Axle Type - Square Taper JIS

▼SHIPPING, TAXES & RETURNS

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We've been safely sending orders around the world since 2010. There's a handy shipping calculator on the shopping cart page so you can see the cost of postage as soon as you've added it to your basket. Your order will be carefully packed and sent with tracking & insurance, we despatch most orders within 2-3 days but larger items and orders placed before the weekend can take an extra day or two to process.

We accept returns, please notify us within 14 days and ensure the item arrives back with us no later than 30 days after the order was received.

EU Customers – for orders under €150 (excluding shipping), VAT will be collected at checkout, but from 1st July 2026, due to new EU import regulations, there may also be a customs duty payable to the carrier. For orders over €150, all import fees will be payable to the carrier, with nothing collected at checkout.

USA Customers – import fees are now collected at checkout for all orders to the US, so there won’t be any surprise charges when your order arrives.

Other International Customers – local import fees may still apply, charged by your customs office or courier before delivery. These are not collected by us, so please check your local rates before purchasing.

Any applicable fees will appear at checkout.

▼HELP SECTION

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Thread Type - this must match the bottom bracket thread on your frame. The 3 common thread types on classic and vintage bikes are English (also known as British or ISO), Italian & French, and are usually (not always!) found on frames built in their respective countries. If you're replacing a bottom bracket the cups should have the thread type stamped on one of them, if not there are a couple of things to look at; bottom bracket shell width (English & French = 68 mm, Italian = 70 mm) & drive side cup thread direction (English = left, Italian & French = right). The only curveball to watch out for here, although pretty uncommon, are Swiss threads (also found on some French frames, Motobecanes being one) which will have the same shell width & thread direction as an English thread frame but the actual thread pitch will be different. If none of the above matches what you have, there are a few lesser known varieties that will require some further research.

Axle Length - your crankset dictates the axle length you need and the recommendation should be used to avoid issues with chainline. If you're replacing a bottom bracket that works perfectly then this can be matched, otherwise you'll need to check the manufacturers spec, a good resource for older bikes is Velobase.

Axle Type - you can tell which type of axle you need just by looking at the shape of the bottom bracket hole in your crankset. The square taper axle came in two variations; JIS which was produced for cranksets made in Asia and ISO for cranksets made in Europe, these taper down to a slightly smaller end than JIS axles. There are a few exceptions such as some Sugino cranksets that required an ISO axle and some older Dura-Ace cranksests which used a shorter 'low profile' variation of the JIS taper. Ofmega/Avocet also had their own variaton of the ISO taper which is not compatible with any other type.