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Shimano XTR M970 9 Speed Hollowtech II Triple Chainset
| 44 / 32 / 22 165mm | Add this item to your wishlist | |||||
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| 44 / 32 / 22 172.5mm | Add this item to your wishlist | |||||
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| 44 / 32 / 22 177.5mm | Add this item to your wishlist | |||||
| 44 / 32 / 22 180mm | Add this item to your wishlist | |||||
Class-leading XTR chainset, integrating the bottom bracket and chainset into a strong, rigid, yet lightweight unit.
Incorporating the benefit of rigidity with minimal weight of the Hollowtech II combined bottom bracket and crankset system, the new FC-M970 manages to drop even more weight while increasing shifting performance and durability.
Your chainset must fit onto your bottom bracket! There are currently four chainset/bottom bracket interfaces that you're likely to come across. If your bottom bracket is made by Shimano and it has splines, then you need an Octalink chainset. If your b/b is NOT made by Shimano and it has splines, it's almost certainly ISIS. There are a very few non-Shimano chainsets with Shimano Octalink interfaces so, to be sure, count the splines - ISIS has 9, Octalink has (surprise, surprise) 8. No matter which brand of b/b you have, if it has a square interface, it will require a traditional square taper chainset. If you have one of the new Hollowtech II systems, you will need to choose the exact chainset that matches your bottom bracket. Most MTB chainsets are now 9-speed compatible but these will work with an 8-speed system.
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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It's not the lightest or pimpest, but the XTR works superbly and its relatively cheap cost completes Shimano's whitewash of the '09 crank scene.
Rather than going carbon, Shimano use top spec Duralumin alloy. Rectangular profile hollow forged arms are both light and strong, with rigidity rivalling most big downhill sets. It's also one of the few modern cranks to come in a full range of arm lengths for perfect rider fit.
The thin-wall scooped-back spider is matched with deep, scooped extensions on the arms of the outer chainring, while the titanium middle ring is sandwiched in a composite carrier.
This translates into massive stiffness and lifespan in the most-used gears, and the bearings last for ages too. Nickel-plated alloy inner and outer rings are relatively wear- and rock-resistant compared with cheaper Shimano rings, too.
While other manufacturers have almost caught up with Shimano shifting standards, the way the chain glides up and down on the ramps and pins is still gorgeous.
While they're slightly heavier than the latest carbon or twin-ring options, the XTR cranks are still well under the 800g mark.
Shimano are the only manufacturer to produce crank arm lengths from 165mm to 180mm, which will please tall or short riders, and considering the overall quality and toughness, price is excellent.
Our only gripes are the unique but fiddly bearing preload collar and special bottom bracket installer tool, and the easily scuffable arm. They're our favourite tough-but-light trail cranks.
Race light, mountain tough and outstandingly detailed set
XTR is the perennial performance benchmark and these new M970 cranks really do raise the bar. While other brands have gone carbon, Shimano have stuck with hollow forged/machined duralumin and it's easy to see why. It's within a handful of grams of the lghtest carbon sets, they're rock solid under foot and after months of pounding thye still look slick. The rings are standard four-bolt fit too. Even the new external BB seems better and the new preload ring and captured bolt fixing is proving excellent in use. All this and at a remarkably reasonable price too, putting XTR right back on top.
Super-light, stiff, and so far impressively durable and all at a fair price.
Aesthetics: They look quite unassuming when brand new especially when compared to the previous generation. They scuff really badly(like all previous XTR cranks).
Value for money: If you want the very lightest cranks that Shimano (or anyone) has to offer then they're a bargain - for everyone else there's XT.
Ease of Assembly: A bit faffier to get your head round compared to oither Shimano designs and requires unfamiliar special tools (that are supplied).
Niggles: If you can ignore the scuffing, none. They function very, very well.
Ideal buyer: Weight weenies of all persuasions who don't want to compromise on strength, stiffness or shifting performance.
Notes: The middle chainring is made of titanium supported in a carbon shell.
Unsurprisingly very good - cranks with faultless shifting even under load. Mucho kudos to Shimano for making the lightest crankset and making it work as well.
Shimano's XTR is racer light, serious mountain tough and relatively cheap, amking it our clear XC chainset choice. The evolved Hollowtech arms in super tough Duralumin alloy are stiffer and tougher than ever (we've mega-avalanched them with no problems), with a bare metal outer face to keep them looking good. The titanium and carbon middle ring is seriously durable too, while shifting is smooth and swift. The new crank attachement method is a bit fiddly but saves a bunch of weight. Bottom bracket life still isn't great, but otherwise it's very easy to live with, thanks to fanatical Shimano quality control on their flagship stuff. It comes in a huge range of crank sizes and price is a steal considering the performance.
Slick, trick, tough, super light and still one of the cheapest chainsets here (on test).
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