Marin Attack Trail Frame

For 2015, the big news on the mountain side is that Marin has largely moved from their Quad Link 3.0 suspension platform to the lighter weight IsoTrack system for some models. This design utilizes flexible seatstays to eliminate pivots and bearings at the rear axle, which helps reduce weight and maximize stiffness.

Essentially a linkage driven single pivot, Marin explains that the revised suspension platform is not quite as progressive as the outgoing Quad Link, but that a new shock tune that has been optimized for the IsoTrack leverage rate ensures solid pedaling performance and mid to late stroke progressiveness.

In other big news, Marin will now be offering framesets alongside complete bikes. The 140mm Mount Vision XM Pro frame now utilizes the IsoTrack suspension platform and comes equipped with a custom tuned Float X shock. UK Pricing for the carbon goodness is £2,200.

2015 Marin Mount Vision CompletePrices for the aluminum models start for as little as £1,500 and £3,500 for carbon. We’ve reached out for U.S. pricing and haven’t heard back.2015 Bikes Marin Attack Trail Frame OnlyThe 150mm travel Attack Trail is a 27.5″ enduro bike that retains the Quad Link design and received only graphical updates for 2015. Completes pair a 160mm fork with the bikes slack head tube and short stays. 

Alloy completes start at  £2,000, while carbon models top out at  £4,500. The carbon frame-only option retails for £2,200.
2015 Marin Rift 9 COmpleteThe Rift Zone 9 has been in the Marin line up for a number of years, but was entirely revised for 2015. We got 
our first look at the updated model this year at Sea Otter.

2015 Marin Rift 9 CarbonThe frame pairs XC oriented geometry with a 110mm of rear travel. Completes will have a 120mm fork.

Prices start at £1,500 for an aluminum complete and top out at £4,500 for carbon. The XX1 and Rockshox equipped complete build we drooled over at Sea Otter weighed a touch more than 25 lbs.


  1. I can’t figure out how the suspension works. Is there another pivot that I’m too blind to see? Or are they counting on the seat stays flexing? They look pretty thick in that direction.

  2. A friend let me ride this for a week when I was on travel. Bike rides super good. Great in all categories (climbing, rollers, DH). My only issue was the TT was a little short. Not real bad but short enough I would ride a LG instead which would solve the problem nicely. Great riding bike which is super light.

  3. The Isotrac suspension system works by spreading the rear triangle open about three degrees. This design creates a stable pedaling platform in the early part of the travel so you can achieve a longer travel bike that pedals very well. In the mid to end of the suspension stroke performance is smooth and linear. For the ultimate in suspension performance the Quadlink 3 is the best choice, but Isotrac was developed for the best pedal performance to suspension performance ratio.

  4. How much travel did the Trek have?… I vaguely recall that being more of a “soft-tail” design like the Moots YBB.

    4.33 and 5.5 Inches of rear travel seems rather ambitious regardless of frame material.

What do you think?