Stronglight cranksets

Stronglight cranksets on this page: Pulsion carbon double 170 | Pulsion carbon triple 172.5 | Triple Speedlight 165mm, 30-42-52 | Speedlight triple 165 ISIS | Speedlight double 165 | Speedlight triple 170 | Speedlight double 172.5 | Speedlight black 172.5 | Speedlight black 180 | Speedlight 180 triple | New Ironlight 170 double | Model 104 bis 170 | 49D 170 crankset

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Stronglight is a revered component maker most famous for cranksets and headsets. The firm started making cranks just before the second world war.

In the 1970s and 1980s the biggest French bike makers equipped their best bikes and teams with Stronglight cranksets. Most notably, Peugeot pro and semi-pro bikes were Stronglight equipped. Bernard Thevenet won two Tours de France using Stronglight equipment.

The firm is located in the French bike-making capitol, St. Etienne.

On this page, we've tried to arrange the items in manufacturing date order, latest production at the top.

Here's Thevenet winning the 1977 Tour de France using Stronglight.

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Stronglight Pulsion 170mm carbon crankset 39-52 chainrings made for splined ISIS drive. New, $500.00

Part# CK-115

The fantastically designed Stronglight Pulsion crankset is one of the lightest available. Produced in the early 2000s, the crankset weighs in at 470 grams. Though it looks and feels featherlight (it is), the crankset is quite stiff and provides an efficient transfer of power.

• The light-alloy chainrings have Stronglight's Ceramic-Teflon treatment for long life, low friction and better shifting.
• The big ring has ramps and pins to optimize shifting.
• 470 grams
• BCD is 130mm

New and in the box

The arms have a wonderful and different design. Metal inserts for the pedals are molded into the arms.

The crank backs, showing the splined ISIS bottom bracket fittings.

Close-up of a Stronglight Pulsion one-key release.

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Stronglight Pulsion 172.5mm carbon triple crankset 30-42-52 chainrings made for splined ISIS drive. New, $500.00

Part# CK-116/61210

The fantastically designed Stronglight Pulsion crankset is one of the lightest available. Produced in the early 2000s, the double version of this crankset weighs in at about 450 grams. Though it looks and feels featherlight (it is), the crankset is quite stiff and provides an efficient transfer of power.

• The light-alloy chainrings are made from Stronglight's super-hard 7075-T6 alloy.
• The big ring has ramps and pins to optimize shifting.
• Weight is 555 grams
• Outer rings have a BCD of 130mm, inner ring's BCD is 74mm

New in the box, and ready to be mounted on your bike

Close-up, showing Stronglight's innovative crankarm design.

From the back, showing the big ring's shifting ramps and pins.

Close-up of a Stronglight Pulsion one-key release.

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Stronglight Triple Speedlight 165mm crankset, 30-42-52 chainrings. New, $299.00/each

Part# 61137

The crank arms have self-extraction allen bolts.

New, in the box

The crankset in its box

The crankset.

Close-up

The back of the right crank

The left arm

Back of the left arm.

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Stronglight Triple Speedlight 165mm crankset, 30-42-52 chainrings made for splined ISIS drive. New, $299.00/each

Part# 61205

• This beautifully finished triple crankset is new in the box. The Speedlight design uses an adapter on the middle ring to mount the small inner ring. It is made for 9-10 speeds. Both the middle and outer ring have lifting pins to help shifting. We believe this crankset was produced in the early 2000s.
• We have two in stock
• The crank arms have self-extraction allen bolts.

New in the box

Stronglight product has always been well finished. This crankset is no exception

The pins to help lift the chain when upshifting can be seen on the middle and outer rings. Also you can see the ISIS axle splines.

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Stronglight Speedlight 165mm double crankset with 39-53 chainrings. New, $250.00/crankset

Part #61143

• This crankset must be used with a flat outer plate front derailleur or as a single-speed.
• The crank arms have self-extraction allen bolts.

New, with its factory box.

Just the crankset

The drive side.

The back of the right crank.

The left crank arm

The back of the left arm.

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Stronglight Speedlight 170 triple crankset with 30/42/52 chainrings. New, $250.00/crankset

Part #61169

The crank arms have self-extraction allen bolts.

The usual beautiful Stronglight design and workmanship.

Closer view of the crankset.

The right side.

The back of the right crank

The left arm

The back of the left speedlight crank arm.

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Stronglight Speedlight 172.5 crankset 39-53 chainrings. New in box, $250.00

Part# 61023

• We have one in stock.
• We have a 40-tooth middle adapter ring to turn this crankset into a triple
• It has a standard ISO square taper and is made for a 111mm triple bottom bracket axle.
• The crank arms have self-extraction allen bolts.
• You can convert any Stronglight Speedlight double crankset to a triple by using Stronglight 130BCD/74BCD conversion chainrings, which are posted here.

The 53-tooth ring has lifting pins to improve upshifts.

And it is new, in the box.

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Stronglight Black Speedlight 172.5 crankset 39-53 chainrings. New in box, $250.00

Part# 61024

• We have five in stock
• We have a silver 40-tooth middle adapter ring and silver inner ring to turn this crankset into a triple
• It has a standard ISO square taper and is made for a 111mm triple bottom bracket axle.
• The crank arms have self-extraction allen bolts.
• You can convert any Stronglight Speedlight double crankset to a triple by using Stronglight 130BCD/74BCD conversion chainrings, which are posted here.

A striking, beautifully made crankset

In its factory box

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Stronglight Black Speedlight 180 crankset 39-53 chainrings. New in box, $300.00

Part# 61200

• This Speedlight is made for 9-10 speeds. We believe this crankset was produced in the early 2000s.
• We have a silver 40-tooth middle adapter ring and silver inner ring to turn this crankset into a triple
• It has a standard ISO square taper and is made for a 111mm triple bottom bracket axle.
• The crank arms have self-extraction allen bolts.
• You can convert any Stronglight Speedlight double crankset to a triple by using Stronglight 130BCD/74BCD conversion chainrings, which are posted here.

Nine and ten-speed compatible

And it is new, in the box.

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Stronglight Speedlight 180 triple crankset 30/42/52 chainrings. New in box, $300.00

Part# 61201

• The Speedlight design uses an adapter on the middle ring to mount the small inner ring. It is made for 9-10 speeds. Both the middle and outer ring have lifting pins to help shifting. We believe this crankset was produced in the early 2000s.
• The crank arms have self-extraction allen bolts.
• It has a standard ISO square taper and is made for a 111mm triple bottom bracket axle.

Nine and ten-speed compatible

In a Stronglight box, with a nifty sticker.

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Stronglight Ironlight 170 mm crankset, 39-53 red rings. New. $250.00

Part# 61127

• The Ironlight cranks were produced in the 1980s and 1990s. They fit square-taper spindles made to ISO specifications and have a 130 bolt diameter.
• This crankset has 39-53 rings designed for 9- and 10-speed applications.
• The crank arms have self-extraction allen bolts.

Fresh from the time machine.

Closer view of the crankset.

The right crank

The right side turned over. You can see the lifting pins on the big right to help shifting.

The left crank arm

The back of the left arm

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Stronglight 104bis crankset, 170 arms, 52-42 rings. Used, $150.00

Part# CK-40-d2

The Stronglight 104 cranks were produced starting in 1977 and through 1983. They were intentionally given a Campagnolo-like appearance, but they retained the traditional Stronglight 122mm BCD (bolt circle diameter). This allowed the mounting of a 38 inner chainring.

The 104 crankset came in two models, one with plain rings, and the 104bis, with the factory drilled rings, like our example. The Stronglight 104 came only in 170mm crank arm length. The crank arms are silver anodized.

Cleaned up and ready to mount

Here's another view of a classic Stronglight crankset

And from the back

Anther look at the back of the crankset.

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Stronglight 49D 170mm crankset with 42/52 chainrings and dustcaps. Used $125.00/set

A special Stronglight puller with 23.5 x 1mm threads is required.

Stronglight introduced its Model 49 crankset just before the Second World War. The initial production had steel arms with aluminum rings. The "D" in the model name stands for Duralumin (aluminum), which the company began using for the crank arms about 1949. There were constant re-designs to the chainrings.

This is the second version of the 49D. The first was made from 1936 into the early 1960s. By the markings on the back of the right arm, we believe this is from early production of the second version. Our best guess (and for us that is what dating earlier Stronglight parts is) is mid to late 1960s.

Here is a classic French bicycle component.

Just the right arm and rings.

Here's the back of the right arm.

The back of the right arm. The way this info is stamped on the arm is what brings us to believe this is mid to late 60s production.

The left arm.

The back of the left arm.

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