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SHIMANO HG 40 chain, 116 links, 7/8-speed

Shimano's workhorse chain for 7 and 8-speed drivetrains, supplied at 116 links and around 300 g (10.6 oz), compatible with single, double and triple chainrings.

Shimano HG 40 bicycle chain in its box

SHIMANO HG 40 chain, 116 links, 7/8-speed

Shimano's workhorse chain for 7 and 8-speed drivetrains, supplied at 116 links and around 300 g (10.6 oz), compatible with single, double and triple chainrings.

Speed compatibility
Rear 6/7/8-speed, front 1/2/3-speed
Link count
116
Weight
approx. 300 g (10.6 oz)
Amazon reference
B0017XXGCI (identical on 6 markets)
EAN
4032191635750
  • Published link count and weight, which almost no chain listing gives
  • Explicit front compatibility as well as rear — single, double and triple
  • One hundred and sixteen links may need shortening substantially on a small frame

Best for: Replacing a chain on a Shimano 7 or 8-speed drivetrain with the part it was designed around.

≈ $75
Check price on Amazon

Specifications

Speed compatibility
Rear 6/7/8-speed, front 1/2/3-speed
Link count
116
Weight
approx. 300 g (10.6 oz)
Amazon reference
B0017XXGCI (identical on 6 markets)
EAN
4032191635750

The HG 40 is Shimano’s long-running chain for 7 and 8-speed drivetrains, and it is specified more fully than most.

What the manufacturer publishes

A chain length of 116 links. A weight of approximately 300 grams. Rear compatibility with Shimano 6, 7 and 8-speed. Front compatibility with 1, 2 and 3-speed.

Why the published figures matter

Two numbers appear here that almost no chain listing gives. Link count tells you whether the chain is long enough before you order — relevant on a long-chainstay touring bike or a bike with a very large rear sprocket. Weight tells you what kind of chain it is: 300 g (10.6 oz) is a durable 8-speed chain, where an 11-speed racing chain is closer to 240 g (8.5 oz).

Front compatibility

Worth noting because it is rarely stated. A chain has to clear the front derailleur cage and shift between chainrings, and a triple puts different demands on it than a single. Shimano covering 1, 2 and 3 explicitly removes a question.

Joining it

No quick link is included with this reference. Shimano publishes a joining method for its own chains, and it should be followed rather than substituted — several manufacturers state a pressed joint is not permitted on their chains.

The questions riders ask

Will 116 links be enough?

For almost any 7 or 8-speed bike, yes — chains ship long and are shortened during fitting. A very long-chainstay touring bike with a large sprocket is the case to check against the derailleur maker's length method.

Does it fit a triple chainring?

Shimano states front compatibility with 1, 2 and 3-speed setups, which covers single, double and triple chainrings.

All bike chains

Prices quoted in these summaries are dated readings. The live price is shown next to each product.