Campagnolo Chorus (706/101) c.1990 Vintage 170 mm Road Chainset

Campagnolo Chorus (706/101) c.1990 Vintage 170 mm Road ChainsetOriginal part in production from the 1980s to the 1990s Professionally checked & cleaned Worldwide shipping Campagnolo Chorus chainset (or crankset, if you prefer), hailing from Italy and dating back to 1990. Made from aluminium and weighing in at 637 grams pretty lightweight for a chainset at that time. A fine choice for keeping your vintage bike authentic, but also great for any other compatible bike. The chainset's been carefully cleaned,

✓ Original part - in production from the 1980s to the 1990s
✓ Professionally checked & cleaned
✓ Worldwide shipping

Campagnolo Chorus chainset (or crankset, if you prefer), hailing from Italy and dating back to 1990. Made from aluminium and weighing in at 637 grams - pretty lightweight for a chainset at that time. A fine choice for keeping your vintage bike authentic, but also great for any other compatible bike.

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

OVERVIEW

---

Body Condition - Very Good
Chainring Condition - Good
Model ID - 706/101
Production Era - 1980s & 1990s
Country - Italian
Material - Aluminium
Weight - 637 g
Stock Code - U-CS115V
NB - Arms have aftermarket logo stickers on

TECHNICAL INFO

---

Chainring Count - Double
Tooth Count - 52 / 42
Bottom Bracket Type - Square Taper
BCD - 135 BCD
Crank Arm Length - 170 mm
Chain Width - 3/32" (Standard)
Pedal Threads - Standard (9/16" x 20 TPI)
Intended Speed* - 6 Speed, 7 Speed
Bike Type* - Road

*See help section.

▼SHIPPING, TAXES & RETURNS

---

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

---

Chainring Count - the number of chainrings on the chainset. Fixed gear track bikes, single-speeds and some geared bikes use a single chainring, road bikes commonly use a double (two rings) and most touring bikes and mountain bikes will use a triple chainset (three rings).

Tooth Count - the number of teeth on the chainring(s), the higher the number the harder the gear.

Bottom Bracket Type - ‘square taper’, as the name suggests have a square shaped axle that slots into the chainset and ‘cottered’ axles are round and secured by pins - pretty much every bike up until the 1990s would use one of these, cottered being the much earlier system. Since then, different manufacturers have introduced their own systems that are not interchangeable so you must use a chainset that matches.

BCD - stands for Bolt Circle Diameter (sometimes referred to as PCD - Pitch Circle Diameter) and is only really needed when changing chainrings. To calculate the BCD, measure the distance in millimeters from the centre of any chainring bolt to the centre of an adjacent one and multiply it by 1.709 (you’ll likely need to round the resulting number up or down a little to get your BCD measurement).

Crank Arm Length - this is measured from the absolute centre of the bottom bracket hole to the centre of the hole for the pedal.

Chain Width - this is mostly only relevant for chainsets with a single chainring - if this is ⅛” then you must use a ⅛” chain. Almost all double and triple (and some single) ring chainsets will use a standard 3/32” chain, the only exception being old chainsets designed for 3 or 4 speed freewheels.

Pedal Threads - this must match the thread of your pedals and is usually stamped on the pedals themselves, most bikes use a standard thread of 9/16” x 20 tpi. The exceptions being older French bikes, bikes with cheaper one-piece type chainsets and Shimano’s Dyna Drive system (easily identifiable as the pedal holes are about an inch wide!).

*Intended Speed - the number of cogs at the back the chainset was designed to be used with. We refer to it as ‘intended’ speed as most double and triple chainsets will actually work with different speeds than originally intended, but the further away you get from the intended speed the more likely you are to experience minor setup issues. The exception being some chainsets intended for 10 speed use or higher, with these it’s better to stick to the intended speed.

*Bike Type - this is just a guide, any chainset can technically be used on any bike as long as everything's compatible.