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Pinarello love to make their pro-level innovations accessible. The Gan GR-S Disk follows the wheeltracks of the Dogma K8-S Disk. Geometry, aerodynamics, flex, comfort, braking have all taken lessons from that WorldTour bike.

The Gan GR-S Disk is still it’s own bike. The most noteworthy departure is space for tires up to 35mm in width. That’s wider than is allowed in UCI-sanctioned cyclocross racing. You can really drop tire pressure with tires that big, and that much rubber on the ground means you can soak up some huge holes and some rough roads that aren’t really roads at all.

If that isn’t enough to lick your chops over, the rear end has been designed with a shock sitting atop the stays. The adjustable elastomer bumper, same as the shock on the K8-S, means you have even more damping between you and the wheel. And thanks to carbon, with Torayca T900 plies in the mix, the flattened chainstays offer vertical flex without any power-eating pivots by the bottom bracket or rear axle.

You might be wondering what is the difference between this and the Gan K, which also seems to be following a similar line. They are fairly similar, though this has a bit less bottom bracket drop, longer chainstays, a bit more fork rake, and more stack. In other words, more room for fat tires as well as a taller head tube for those who want a slightly more upright position.

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-S, 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 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-S. tapered 1 1/8” to 1 1/2” steerer. 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-S Disk is fast on the road, fast on the pavé, fast on the trail, and has enough clearance that you could actually take the bike to a cyclocross race, and still be racing at the front.


  • Bottom Bracket Shimano Ultegra 6800
  • Brake Calipers Shimano RS805 Hydraulic
  • Cassette Shimano Ultegra 6800, 11-32
  • Chain Shimano HG700
  • Crankset Shimano Ultegra 6800, 52/36
  • Fork Onda Asymmetric Carbon, 1 1/8" - 1 1/2"
  • Frame Material Torayca T900 Carbon
  • Front Derailleur Shimano Ultegra 6800
  • Handlebar MOst Xylon CT Gravel
  • Headset Pinarello 1 1/8" - 1 1/2"
  • Pedals Not Included
  • Rear Derailleur Shimano Ultegra 6800
  • Rotors Shimano
  • Saddle Fizik Arione R7
  • Seatpost MOst Air 8 Aero
  • Shifters / Levers Shimano RS685 Hydraulic
  • Stem MOst Tiger Alu Aero
  • Tires Vittoria Adventure, 700x35c
  • Wheel - Front Fulcrum Sport DB AFS
  • Wheel - Rear Fulcrum Sport DB AFS

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