Izumi Black NOS/NIB Vintage 5/6 Speed Chain

✓ Original part - produced in the 1980s
✓ New old stock & still in the original packaging!
✓ Suitable for historic cycling events such as L'Eroica
✓ Worldwide shipping

Izumi chain, hailing from Japan and in production during the 1980s (yet still new & unused after all this time!). Made from steel and weighing in at 390 grams. A fine choice for keeping your vintage bike authentic, but also great for any other compatible bike.

If you're taking part in L'Eroica, Anjou Velo, Velo Retro or another similar vintage cycling event, this is fully compliant - so rest assured, the pre-1987 police won't lock you up for having the wrong chain!


Condition - New Old Stock - In Original Packaging*
Production Era - 1980s
Country - Japanese
Material - Steel
Weight - 390 g
Stock Code - D-CHN42V

*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.


Optimal Speed* - 5 Speed, 6 Speed (Up to 4 Spd 3/32")
Shifting System(s) - Friction (Non-Index)
Outer Width - 8.0 mm
Cog Width - 3/32" (Standard)
Pitch - 1/2" (Standard)
Number of Links - 116

*See help section.


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.

We don't charge VAT, however, if buying from outside of the UK please remember that there may be import fees to pay directly to the delivery company before receiving the order. Unfortunately we can’t advise on the exact costs as it varies from country to country, so please check your national rates before purchasing.


Optimal Speed - the ideal number of rear cogs, based on the outer width of the chain and the cog width it was designed for. For 6 Speed Shimano Uniglide a 5/6 spd chain will perform best.

Shifting System(s) - indexed shifters 'click' when you change gear. For 9 speed upwards (or Suntour Accushift), to guarantee the best performance we recommend using the dedicated chain. Otherwise, for 8 speed and below, or any speed when using friction shifting (non-index), you just need the correct outer width.

Outer width - measured across the rivets at the widest point, these are the approximate widths for different speed setups (up to 4 speed is also dependent on cog width):

Speed Outer Width
2 to 4 Speed (1/8”) 8.5 to 9.5 mm
Up to 6 Speed (3/32”) 7.8 to 8.0 mm
7 Speed / ‘Narrow’ 6 Speed 7.3 mm
8 Speed / ‘Narrow’ 7 Speed 7.0 to 7.3 mm
9 Speed 6.5 to 6.7 mm

Cog Width - the gap between the inner plates allows for different rear cog/sprocket widths. 3/32" is the standard for 5 to 8 speed, above that it’s 11/128”. For 4 speed or less, 3/32” and 1/8” were both used, for the latter you will need a 1/8” chain. A wider 3/16" moped chain can be used as a heavy duty opton for single cog setups if required).

Chain pitch - the distance between the rivets/pins. All chains will be 1/2" with two exceptions; 3/16" (“inch pitch”) for very early track bikes, or Shimano's short lived 10 mm pitch system from the 70s/80s.

Number of links - if you're unsure how many you need, measure your old chain (each link has two rivets) or one with a similar setup to yours.