Marin's 2012 Rift Zone XC7 is a 100mm bike that loves to play and doesn't shy away from the race scene, either. Built with some nice specs that are surprisingly light, the Rift Zone keeps you riding trouble-free season after season. Check out the 3x10 drivetrain with SRAM X7 shifting and the Avid Elixer 5 Hydraulic Disc brakes! And you get a few surprises, gear that is found on bikes costing hundreds more. Up front, you've got a Fox 32 Float RL O/B fork and shock out back. The Rift Zone XC 7 rolls out on Mavic CrossRide wheels with Continental X-King, 26” x 2.2" tires. If you're looking for a nice mid level full suspension mountain bike, the Rift Zone is a nice choice.
Three primary features that made Quad-Link successful continue forward to Quad-Link 3 :
Instantaneous Pivot Center (IPC) Technology:
The heart of Quad-Link, the moving pivot center reacts to both pedal
input and bump force to allow seamless wheel movement over terrain while
efficiently transferring rider effort to the rear wheel.
Intelligent Axle Path:
Because of the Quad-Link's design of attaching the swing arm to the main
frame via the two Quick Links, engineers can alter the arc of the rear
wheel as it moves through its travel. A unique feature with Marin's
Quad-Link design is the rearward wheel path during the initial movement
of the suspension. This allows superior square bump performance by
allowing the wheel to roll up and over obstacles- essential for
maintaining contact over braking bumps while descending and maintaining
momentum and traction while climbing up and over obstacles. During the
latter part of the wheel travel the axle path follows an arc around the
bottom bracket, allowing the suspension to freely absorb impacts without
pedal-induced lockout or bobbing.
Varying Shock Leverage Ratio
The second benefit of the Quad-Link's attachment of swing arm and
mainframe is the ability to alter the leverage ratio between the shock
and the rear wheel as it moves through its travel. While still a rising
rate suspension design, the Quad 3.0's system has been revised to offer a
more linear suspension rate. Essentially, as the wheel moves further
into the travel more force is needed to compress the suspension. The
benefit is a suspension system that is very active in its initial travel
to increase traction when climbing and sprinting while resisting
bottoming out on hard impacts and landings. Because these features are a
part of the suspension system itself, and not the shock, riders are
given the freedom to choose shocks from their favorite manufacturers and
not have to worry about being stuck with proprietary parts.