Following Ian's review, I feel that I should offer my take as well after having been riding the Pivot Mach 5.7 for sometime and having a good feel of how the bike handles in a number of different type of trails. If I can say something about this bike is that it is fast, the DW Link really enables it to stay at speed and really pushes the rider to go faster. Comparing to the Moots Cinco, this bike is not a XC bike with its long travel 150mm fork and 5.7" rear travel but it's definitely not a Firebird so for certain trails where it's super techincal with big drops and large boulders, it wouldn't be ideal either, travel or otherwise. So that's why there are so many arrows in the quiver. In this day and age of specialization, it's difficult for one bike to excel in all conditions.
Hill Climbing - As with Ian, I found the front end with the longer travel fork to wander a little bit while doing technical climbs. What I found however is that if I lifted the front end and gave the bike a bit of a push, I was able to easily ride over the obstacles rather than around or through them. So the important thing when climbing with this bike I found is to be in the right gear to attack the hill so to speak. Just found out that the Fox Float has 150mm travel instead of 140mm so that would contribute to the higher/lighter front end feeling. May get the travel reduced to see how it feels.
Downhill - I can't comment too much here as the bike's abilities are higher than what I'm comfortable with. All I can say is that this bike doesn't feel nervous or sketchy downhills, I didn't feel like I was going to get tossed over and the bike felt stable and in control. It felt confident and felt like I could go faster. So there is definitely room for me to grow here. So this is where the extra travel would help so it's always a balance and what you value as a rider.
Rock Garden - The suspension performed really well in these type of trails. I did not find the rear suspension losing momentum or wallow in pockets while riding and it felt very effective. The bike felt stable and I was able to pedal through as though the bike floated over the rocks. The pedals did hit from time to time but I would expect that of any bike but not so much so that it was annyoying and so the BB height did not cause any problems for me. I really enjoyed the bike over the rock garden sections of the trail that I was on.
Fast Fire Roads / Flat Sections - Why is this important? This is important for the fact that the industry as a whole has been working very hard so that the full suspension bike you ride works well here (well, not just on flat sections but it's easy to see the problem on flat sections) from lockout to various anti squat, VPP, NRS, Pro Pedal,Brain and everything else that that the collective industry can think of. The whole idea being to eliminate or resist pedal induced feedback. This has sort of become the holy grail of sorts for the bike industry so it's important to note that different designs solve it to various degrees. If you take it too far, it becomes a hard tail and that's not the perfect rear suspension design. When I was riding on flat fast sections where I was constantly peddling, I did not notice much bobbing or other traits of bob/squat while accelerating or braking. I didn't feel any brake jack which I've only felt once on the Moots Cinco. It is very important to set the sag right with DW Link designs so Pivot has come up with a neat collar around the rear shock that helps you measure the sag properly regardless of rider weight. The first time I rode a Mach 5 last year, I was blown away. I couldn't believe how effective it was. Parts of the trail I was expecting to be bucked off the bike I found I was able to ride seated and pedal through. It was eye opening.
Conclusion - If you're looking for a bike that handles well, not too heavy, effective rear suspension, then you really owe yourself to put this bike on your short list. There are a lot of companies licencing the DW Link rear suspension for a reason. It just works. Now then it becomes who implements it well so that the overall package works well together. A good rear suspension design is one that you don't even feel working and that's how I feel about the Pivot implementations after trying the Mach 5, 5.7 and Paul's impression of the Firebird. At the end of the day, I felt like I can ride longer harder and isn't that what we all want?
Enjoy the Ride
Spokewrench






