✓ Original part - in production from the 1980s to the 1990s
✓ Suitable for historic cycling events such as L'Eroica
✓ Professionally checked, cleaned & re-lubricated
✓ Worldwide shipping

The chain's been examined for wear, thoroughly cleaned and degreased, then freshly lubricated and graded as excellent condition, but do take a good look at the detailed photos so you can see the cosmetic condition before you buy. Chain stretch for this one comes in at less than 1/64” (barely used), measured by hand as this is the most accurate method, and although it’s impossible to be exact it gives a good indication of how much use a chain has had.

Please consider that chains do wear at the same rate as the sprockets they were originally used with, and when partnered with different ones they can on rare occasions skip. This can usually be avoided by using compatible sprockets with a similar amount of wear as the chain, but there is no way for us to confirm which combination will work before trying.

OVERVIEW

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Condition - Excellent
Model ID - 50
Production Era - 1980s & 1990s
Country - Italian
Material - Steel
Weight - 309 g
Stock Code - U-CHN48V

TECHNICAL INFO

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Optimal Speed* - 8 Speed, 7 Speed, 6 Speed (Narrow)
Shifting System(s) - All Systems (Indexed), Friction (Non-Index)
Outer Width - 7.3 mm
Cog Width - 3/32" (Standard)
Pitch - 1/2" (Standard)
Number of Links - 108
Chain Stretch - Less Than 1/64” (Barely Used)

*See help section.

SHIPPING & TAXES

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We've been safely sending orders around the world since 2010. You can see the exact postage costs within ebay before you buy. Your order will be carefully packed and sent with tracking & insurance, normally within 2-3 days, but larger items and orders placed before the weekend can take an extra day or two to despatch.

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.

- For EU orders under 150 euros, import fees are now included in the price, so there will be nothing further to pay.

- For EU orders over 150 euros, and for all orders from outside of the EU, there may be import fees to pay directly to the delivery company before receiving the goods. Unfortunately we can’t advise on the exact costs as it varies from country to country, so please check your national rates before purchasing.

You’ll see a message from eBay confirming whether import fees have been included or not before you make a payment.

HELP SECTION

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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.