Shimano 600 Ultegra (FD-6400) c.1991 Classic Braze-On Front Derailleur

Shimano 600 Ultegra (FD-6400) c.1991 Classic Braze-On Front DerailleurOriginal part produced in the 1990s Professionally checked & cleaned Worldwide shipping Shimano 600 Ultegra front derailleur, hailing from Japan and dating back to 1991. Made from aluminium steel and weighing in at 94 grams. A fine choice for keeping your classic bike authentic, but also great for any other compatible bike. The front derailleur's been carefully cleaned, thoroughly checked by one of our mechanics and graded as OK condition, but do take

✓ Original part - produced in the 1990s
✓ Professionally checked & cleaned
✓ Worldwide shipping

Shimano 600 Ultegra front derailleur, hailing from Japan and dating back to 1991. Made from aluminium/steel and weighing in at 94 grams. A fine choice for keeping your classic bike authentic, but also great for any other compatible bike.

The front derailleur'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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Condition - OK
Model ID - FD-6400
Production Era - 1990s
Country - Japanese
Material - Aluminium / Steel
Weight - 94 g
Stock Code - U-FM137C

TECHNICAL INFO

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Chainset Type - Double
Frame Fixing - Braze-On
Pull Type - Bottom Pull
Indexing System* - Road

*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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Chainset Type - the number of chainrings the derailleur was designed to work with. ‘Double’ derailleurs are actually capable of working on ‘triple’ chainsets but they may struggle when shifting, especially if there’s a big step down from the middle to inner ring, so it’s better to match these correctly.

Frame Fixing - the way the derailleur fixes to the frame, if you have a tab on your frame to mount the derailleur to you need braze-on. If there’s no tab then you require a clamp-on type (also referred to as band-on or clip-on), these come in different sizes to match the diameter of your seat tube.

Pull Type - the direction of which the cable needs to ‘pull’ the mech in order to shift. If your cable runs up to the derailleur from the bottom bracket area then you need bottom pull, if your cable comes down from above you need top pull. Some later derailleurs can be used for either setups, these are referred to as dual pull.

Designated Speed (9 Speed & Above) - the speed of the chain that the mech was designed to be used with. This only becomes relevant for mechs marketed as 9 speed or above when chains became narrower, as the derailleur cage plates became marginally narrower too. We refer to it as ‘designated’ speed as technically you can use (almost) any derailleur with any chain, however if you want optimum performance it’s best to stay close to the manufacturers recommendations.

Indexing System (Shimano Only) - this is only applicable when using Shimano shifters that have an indexed left shifter such as STI or Rapidfire. For the indexing to work correctly when using these shifters the derailleur and shifters must be of the same type, so Shimano drop bar shifters need to be matched with a Shimano ‘road’ derailleur, and Shimano flat bar shifters must be used with Shimano ‘MTB’ derailleurs.