Tacx T4000.25 Stainless Bearings NOS/NIB Classic 10T Jockey Wheels

Tacx T4000.25 Stainless Bearings NOS/NIB Classic 10T Jockey WheelsOriginal jockey wheels produced in the 2000s New old stock & still in the original packaging! Worldwide shipping Tacx T4000. 25 jockey wheels (or derailleur pulleys if you prefer), hailing from The Netherlands and in production during the 2000s. Made from plastic steel and weighing in at 19 grams. A fine choice for keeping your classic bike authentic, but also great for any other compatible bike. OVERVIEW Condition New Old Stock In Original Packaging*

✓ Original jockey wheels - produced in the 2000s
✓ New old stock & still in the original packaging!
✓ Worldwide shipping

Tacx T4000.25 jockey wheels (or derailleur pulleys if you prefer), hailing from The Netherlands and in production during the 2000s. Made from plastic/steel and weighing in at 19 grams. A fine choice for keeping your classic bike authentic, but also great for any other compatible bike.

OVERVIEW

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Condition - New Old Stock - In Original Packaging*
Model ID - T4000.25
Production Era - 2000s
Country - Dutch
Material - Plastic / Steel
Weight - 19 g
Stock Code - D-JCK6C
NB - Multiple spacers supplied to fit Shimano, Campagnolo & SRAM

*New old stock items may have marks from storage over the years, and as we often have multiples they can vary from piece to piece, but they are always genuine new & unused items.

TECHNICAL INFO

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Teeth - 10
Compatible Speed* - 7 Speed, 8 Speed / 8 Speed, 9 Speed, 10 Speed (Shimano / Campagnolo)
Diameter (OD) - 38 mm
Thickness - 7.1 mm (Without Spacers)
Centre Hole (ID) - 7 mm (Without Spacers)

*See help section.

▼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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Teeth - the tooth count has increased with the introduction of more gears, but this happened very gradually so 10 tooth jockey wheels were standard for a very long time.

*Compatible Speed - the number of cogs the jockey wheels were designed to be used with. When using derailleurs for indexed shifting it's important to stick to this, but friction shifting is much more forgiving so you're unlikely to have any problems using the next speed up or down, providing all the measurements are correct.

Diameter (OD) - the diameter of the jockey wheels, from the outside edge of the teeth. It’s important to stay close to the ones you're replacing to ensure they fit.

Thickness - measured at the widest point, by the centre hole. The spacing has generally become narrower over the years to accommodate more gears.

Centre Hole (ID) - the inside diameter (usually inside the bushing/spacer if present). This rarely presents a problem, but some older jockey wheels have a different diameter so it's worth double checking.