144mm Bolt Circle Diameter (Traditional Campagnolo) chainrings

144mm Bolt Circle Diameter (BCD) chainrings on this page:
Campagnolo: NR 52-tooth | NR 54-tooth
Mavic: 630 42-tooth | 630 53-tooth
Stronglight: 107 54-tooth

Back to master list of available chainrings

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Bolt Circle Diameter is the diameter of the circle formed by the centers of the chainring fixing bolts. With 4-bolt cranksets, this is easy to measure. 5-bolt cranks are more difficult.

144mm is the bolt circle diameter of an entire generation of 1960s, 70s, 80s and even 1990s cranksets, including Campagnolo, Sugino, Mavic, Stronglight, Ofmega, SR, SunTour, Gipiemme, Zeus as well as others.

If you are unsure about what size chainring you need, Wolf Tooth Components has an excellent guide to measuring your rings.

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Campagnolo Nuovo Record 52-tooth 144 BCD chainring. Used, $100.00

• Campagnolo part# 753, made for Record 1049 crankset.
• This chainring was produced from the mid 1960s into the 1980s.

Does anything say classic Campangolo louder than this 52-Nuovo Record ring?

Here's the flip side.

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Campagnolo Nuovo Record 54-tooth 144 BCD chainring. Used, $100.00

• Campagnolo part# 753, made for Record 1049 crankset.
• This chainring was produced from the mid 1960s into the 1980s.

Front side, mild wear

And the back side.

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Mavic Model 630 42-tooth 144 BCD chainring. Used, $65.00

All Mavic products are beautifully made, and this 42-tooth ring is no exception.

The flip side

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Mavic Model 630 53-tooth 144 BCD chainring. Used, $65.00

Lightly used

The flip side

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Stronglight Model 107 54-tooth 144 BCD chainring. New, $75.00

Part# 62174

Produced in the mid-1980s

Side one.

And the flip side.

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