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Pinarello
Dogma K8-S Road Frameset - 2017

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Road race, redefined.

Road bikes and plush suspension aren't things you usually think of pairing, especially in a race bike, but when one of the world's most dominant teams wants a bike to soften the spring classics cobbles you start thinking outside the proverbial road racing box. Enter the 2017 Pinarello Dogma K8-S Road Frameset, the result of a collaboration between Pinarello and the same group of Jaguar supercar engineers who helped design the venerable Dogma F8. Steeped in Pinarello heritage and boasting a unique rear suspension, the K8-S sets a new bar for rough-road performance.


Pinarello again relies on Japanese carbon fiber supplier Toray for the K8-S frame's material. It features Torayca T1100 1K Dream Carbon with Nano-alloy technology, which is the same material used in the Dogma F8. While the name is certainly impressive, its application is even more so. T1100 1K is the current go-to outer skin for many modern aircrafts, and its stiffness-to-weight ratio is nothing short of stunning. But weight, of course, is only a slice of the Dogma equation; tube shaping also plays a vital role in the bike's handling and overall efficiency.


Starting at the front of the frame, Pinarello utilizes its Onda fork and adds slightly more rake than the F8's front end for a hint of additional compliance and stability. As with the F8's front end, the Onda fork is inspired by Pinarello's TT-specific Bolide, with an optimized surface profile that effortlessly manages airflow from the front wheel. The blades describe a somewhat convex shape, which Jaguar's engineers say keeps air attached, reducing the size of the wake without creating too large a frontal zone.


The front triangle closely mirrors the shape and aerodynamic profile of the Dogma F8. Pinarello incorporates its signature FlatBack technology with oval-front and flattened-back tubing throughout the frame and fork for an aerodynamic profile that slices cleanly through the wind without any extra materials bogging down the scale. As an extra touch, an integrated seat clamp and FlatBack seatpost add to the wind-cutting advantage.


All similarities to the F8 quickly disappear as you move to the rear triangle, with the K8-S featuring a markedly different layout out back than the F8. Most noticeably, a small elastomer suspension system, dubbed the Dogma Suspension System 1.0, sits at the seatstay junction to provide up to 10mm of plush cushion to smooth out bumpy roads and cobbles without sapping away power. Pinarello is understandably secretive about the final shape and mix of the elastomer, but it claims that this system effectively dampens vibrations without experiencing excessive movement when riders dump watts into the pedals. The chainstays and seatstays on the K8-S have also been flattened compared to the F8 to provide additional compliance over the bumps while maintaining lateral stiffness.


At the bottom bracket junction, Pinarello sticks with its proven Italian-threaded shell, a design choice it stands by for both reliability and overall rigidity. Additionally, the extensive CFD testing revealed that lowering the seat tube water bottle mounts results in less drag. Because of this, Pinarello incorporates three holes on the seat tube and down tube for two bottle mounting positions.


Pinarello's asymmetric design philosophy is ever-present in the Dogma K8-S, as its engineers again restudied the forces in action as a rider stands on the pedals, pulls on the handlebars, and muscles the bike through corners. FEA (Finite Element Analysis) confirmed that the asymmetrical design was beneficial in leveling the variances in frame deflection from one side to the other, which is why the K8-S' tubes have been arranged in a similar layup to better balance drive-side forces.


As with the F8, carefully engineered internal cable routing on the new K8-S lets you choose between either mechanical or electronic shifting systems without any penalty to the bike's aesthetics or aerodynamic profile. The K8-S features interchangeable cable stops at the frame openings that are capable of being intuitively swapped out should you select different drivetrains throughout the life of the frame.


Details

  • A race-ready machine designed to smooth rough roads
  • Torayca T1100 1K Dream Carbon Fiber construction
  • Dogma Suspension System 1.0 provides 10mm of cushion
  • FlatBack tube shaping increases aerodynamic efficiency
  • ONDA fork and slightly slacker front end for stable comfort
  • Internal cable routing compatible with all types of drivetrains
  • Item #PIN002W
Frame Material
Toray T1100 1K Dream Carbon Fiber
Wheel Size
700 c
Fork
ONDA
Fork Material
Toray T1100 1K Dream Carbon Fiber
Head Tube Diameter
1-1/8 - 1-1/2in tapered
Headset Included
yes
Bottom Bracket Type
Italian
Cable Routing
internal
Front Derailleur Mount
braze-on
Brake Type
rim
Compatible Components
electronic, mechanical
Seat Collar
TwinForce (integrated)
Extras
Dogma Suspension System 1.0
Claimed Weight
[Black/Red, 54cm] 2,110 g
Recommended Use
cycling
Manufacturer Warranty
2 years

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