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

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

OVERVIEW

---

Condition - Good
Model ID - 306/051
Production Era - 1990s
Country - Italian
Material - Aluminium
Weight - 53 g
Stock Code - U-CRI40C

TECHNICAL INFO

---

Tooth Count - 42
Between Adjacent Bolt Holes - 79.4 mm
BCD - 135 BCD
Bolt Count - 5-Bolt
Chain Width - 3/32" (Standard)
Intended Speed* - 6 Speed, 7 Speed

SHIPPING & TAXES

---

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

---

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

Between Adjacent Bolt Holes - the measurement from the centre of any bolt hole to the centre of an adjacent one, if this measurement is the same as that of your crankset and the bolt count is the same then the chainring should fit.

BCD - stands for Bolt Circle Diameter (sometimes referred to as PCD - Pitch Circle Diameter) and is the technical way to determine whether the chainring fits your crankset. To calculate, multiply the distance between adjacent holes (in mm) by 1.709 (you’ll likely need to round the resulting number up or down a little).

Bolt Count - the number of bolts securing the chainring to the chainset. As with the BCD, this must be the same as your chainset.

Chain Width - 3/32” is the standard width for double and triple chainsets, wherease 1/8” chainrings are only found on single ring chainsets, generally for track / singlespeed use and can only be used with a wide 1/8" chain.

Intended Speed - the number of cogs at the back the chainring 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 chainrings intended for 10 speed use or higher, with these it’s better to stick to the intended speed.