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Note: Image does not reflect exact build specifications.
The Pinarello GAN GR Disk and GR-S Disk are nearly identical. The main difference is that the GR (think GRavel) does not have a shock atop the seatstays. This makes the bike simpler and lighter, if a bit less forgiving when riding over really rough roads.
The GR has been updated to reflect Pinarello’s added work on better understanding the needs of riders looking for a bike that can handle rough roads, and rougher non-roads. There’s less focus on aerodynamics, and more on maximizing comfort. You’ll see this in the simplified Onda fork, the refined head tube, the simplified aero Flatback down and seat tubes, and, most importantly, the updated stays. The chain stays are flattened in the middle for vertical flex. Equally important is that they’ve lengthened the stays and forks to fit tires up to 38mm in width—and you can also choose to install fenders (yes, threaded eyelets are built into the frame) and run 32mm tires.
This is something special, a mixed-surface bike that still is designed to go fast. It’s not just the geometry that is racy, but the tube shaping. As with the K8, these tubes benefit from Pinarello’s FlatBack profile down and seat tubes. The design is aero, but comfortable, as the leading edge airfoil is chopped down in back, both to improve comfort and minimize weight. The heat tube, fork legs, and seatstays are also shaped for aerodynamics, but a bit less so to helps the Onda shape with vertical compliance. The seat post and stem are aero a well.
As the name indicates the bike is set up with disc brakes. The brake mounts are designed for rotors up to 160mm in diameter. The fork has a flat-mount system for the front caliper. The rear triangle has Pinarello’s RAD System for mounting the rear brake caliper. It’s a lightweight, secure means to fix the caliper to the stays without bulking the chainstay. By keeping the seat stay thinner, the ride is closer to that of a bike with conventional rim brakes. Keeping the lateral rigidity high as well as keeping things secure and simple are thru-axles, both front and rear. 12x100mm in front and 12x142mm in back. More secure mounting, potentially faster wheel changes.
This GAN also boasts many of the cool design extras of the K8. Tapered 1 1/8” to 1 ½” steered. Think2 internal cable routing—which works with mechanical, electronic, or hydraulic systems. If you go the electronic route, the battery goes in the seatpost, though you’ll need an accessory adapter if your bike doesn’t come with electronic shifting. The bottom bracket is the reliable Italian threaded standard—easy for servicing.
The GAN GR Disk is easy: one bike for a complicated relationship with roads.