Cannondale SuperSix Evo HM Disc review$6,200.00

The Evo’s braking evolves

BikeRadar score4.5/5

Apart from shifting the brake calipers from rim edge to dropouts, there’s little to distinguish the SuperSix Evo Disc frameset’s profile from its SuperSix Evo cousin. But Cannondale didn’t just tweak the existing frame, it went through a total redesign resulting in a 56cm frameset weight of 1,189g, just 92g more than the rim-braked model.

An equivalent rim-braked SuperSix Evo HM bike can weigh up to half a kilogram less than this bike’s 7.61kg, but that’s pretty light for discs, and feels even lighter from the saddle, as the additional weight from the brake calipers, rotors, Di2 derailleur motors and battery is all around hub height, and doesn’t directly affect rotational mass.

Cannondale’s Hollowgram Si wheelset does affect rotational mass, and the 25mm external, 19mm internal and 35mm tall carbon rims come with Stan’s No Tubes rim tape. They’re an ideal extension of the Evo Disc’s historical attributes, and, even with inner tubes, the Schwalbe One tubeless tyres feel racy.

Cannondale didn’t just tweak the exisiting frame, it went through a total redesign
Cannondale didn’t just tweak the exisiting frame, it went through a total redesign

Cannondale used the most subtle truncated aero profiles for the major wind-facing tubes, to reduce drag without compromising stiffness and compliance. Some rear end compliance has been sacrificed in the redesign, relying more on the slim 25.4mm carbon seatpost and Delta-Tube seat-tube for vibration reduction.

Whether racing or not, there’s no excuse not to feel racy aboard this bike

It’s hard to notice, especially when the 25mm tyres inflate to a plump 28mm. At 85psi, the Evo Disc rides corrugated tarmac with such composure that I had to remind myself it’s a race bike, not an endurance model.

The relationship between wheels and frameset is more crucial due to the importance of disc brake alignment. The fork’s continuous carbon fibre construction gives ultimate strength to weight, with a thru-axle managing the 160mm rotor’s braking forces.

Cannondale decided on a quick-release rear wheel, citing hub weight savings and faster in-race wheel swaps as the reasons. Weight transfer under braking means less force can be applied through the rear brake, and performance was never less than excellent, with no evidence of rub in any situation.

Whether racing or not, there’s no excuse not to feel racy aboard this bike, as its ability to cruise and cosset, or hammer and carve are equally accessible.

Shimano’s Ultegra Di2 looks classy and swiftly snicks between gears, and the stiff Hollowgram Si crank with one-piece 52/36 SpideRing ups the quality quotient.

Convert the wheels to tubeless for more weight loss benefits
Convert the wheels to tubeless for more weight loss benefits

Cannondale’s mid-range aluminium bar and stem are decent, and the slim carbon post topped by a Fizik Arione saddle is a tried and trusted combination. If weight is a consideration, Di2 comes with a penalty, and there are small savings to be made on finishing kit.

The wheels are stiff, agile and stable in winds, and you could make them tubeless, saving rotational weight while improving ride quality and rolling resistance.

Functionally, there’s nothing I’d change about the bike, but aesthetically, the wheel release levers protrude 25mm from the frame.

The nod toward aero tube shaping is an example of not wishing to dilute the Evo’s ethos as a true all-rounder that can climb, descend, conquer technical turns and float along with incredible speed.

This article was originally published in Cycling Plus magazine, available on Apple Newsstand and Zinio.

Robin Wilmott

Tech Writer, Tech Hub, UK,
Robin began road cycling in 1988, and with mountain bikes in their infancy, mixed experimental off-road adventures with club time trials and road races. Cyclocross soon became a winter staple, and has remained his favourite form of competition. Robin has always loved the technical aspect of building and maintaining bikes, and several years working in a good bike shop only amplified that. Ten years as a Forensic Photographer followed, honing his eye for detail in pictures and words. He has shot at the biggest pro events since the '90s, and now he's here, drawing on all those experiences to figure out what makes a bike or component tick.
  • Age: 45
  • Height: 178cm / 5'10"
  • Weight: 75kg / 165lb
  • Discipline: Road, cyclocross, time trials
  • Beer of Choice: Sierra Nevada Pale Ale

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