Shimano Dura Ace 7901 10 Speed Chain
Shimano Dura Ace 7901 10 Speed Chain
Top of the range Dura-Ace Super narrow 7901 chain is a lightweight 10-speed directional chain for optimum cassette and chainset interaction and maximum power transfer.
Top Features of the Shimano Dura Ace 7901 10 Speed Chain
- Directional design with specifically shaped inner and outer plates to optimise shifting under load
- Hollow link pins and perforated inner link plates offer great weight savings
- Hyperglide (HG) series 10-speed compatible chain
- Durability is assured through a chromising treatment on link pins, and the heat treatment of rollers, pins, and plates
- 5.88 mm chain width, optimised for 10-speed Super Narrow HG drivetrains
- Zinc-alloy silver finish offers the longest lasting and best resistance to corrosion
- Weight: 252 grams
Chain uses a directional design with specifically shaped inner and outer plates to optimise shifting over the chainset and cassette. The outer plate design has been developed to reduce the chance of chain suck and the inner plate has been developed for better contact with gears providing smoother shifting under high load, giving efficient pedalling, increased rigidity, and near silent running.
A bicycle chain is a 'roller chain' that has the task of transferring power from the cranks to the rear wheel of the bike thus propelling it. Most bicycle chains are made from alloy steel, but some are chrome plated or stainless steel to prevent rust, or simply for good looks. Chains will vary in width depending on the amount of gears you have, most are 3/32 inch for use with geared systems and then come in 'speeds' which needs to matched to the cassette, ie a 10 speed cassette will need a 10 speed chain and so on. Track bikes or single speeds often run 1/8 inch rings so will need a 1/8 inch chain as well, these will have larger plates to aid stopping on a fixed wheel, which can add extra stress to a chain.
About the Shimano brand
Shimano are the makers of the world's most well known cycle component brand. Established in 1921 when the first cycle freewheel was forged. Shimano produce drivetrains, wheels, pedals, shoes, cycling clothing and pretty much every Shimano cycle accessory you can think of! Famous for their top end products ridden by the pro's, Dura-Ace and XTR, which cover both road and MTB's. At Shimano, they're doing everything they can to respond to heightened environmental concerns. Shimano are proud to be a producer of bicycle components that help people to enjoy outdoor sports and interact with nature through healthy non-polluting activities. In their 87 plus years of existence Shimano have accumulated a wealth of technology and product development and expertise that serves as the driving force behind their continually evolving product line.
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Product Q & A
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The same with 2nd & 3rd chain around 4000 - 5000kms.
I even took it to the bike shop for a second opinion, there comment was the chain was still O.K
I just replaced to chain each time for peace of mind.
I clean the chain regularly & my average cadence is between 90 – 100.
I really unsure why I get some many kms out of a chain.
link can be bought seperately
Do I need to adjust the length of the chain to fit the 105 crank 53/39T?
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