This article originally appeared on BikeRadar
Giant is all in on disc-brake aero road bikes.
Every model in the 2018 Propel Advanced aero bike line features hydraulic Shimano disc brakes, and the Taiwanese manufacturer claims the new machines are aerodynamically superior to its previous rim-brake editions and deliver a higher stiffness-to-weight ratio than the top competitors' aero bikes.
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In terms of wind-tunnel measurements, Giant found the Propel Disc to be in line with the Trek Madone and the Specialized Venge ViAS Disc.
Giant spent three years developing the Propel Disc, combining wind-tunnel work at Aero Concept Engineering in France with Giant's deep in-house carbon manufacturing expertise.
There are no rim-brake Propels for 2018; the range runs from full electric/hydraulic Shimano Dura-Ace to mechanical/hydraulic Shimano Ultegra, all with Giant's own carbon tubeless wheels that come set up with sealant.
Can disc brakes really be aero?
Tunnel testing meets real-world considerations
Propel Disc vs. Specialized Venge ViAS Disc, Trek Madone and Canyon Aeroad CF SLX
But what about the CdA numbers?!
Giant Propel Disc Advanced models, prices and availability
- Carbon, blue and white
- Integrated seatmast
- Top-level carbon
- Carbon stem, carbon bar
- Full Shimano Dura-Ace 9170 hydraulic Di2, including Dura-Ace power meter 52/36 and 11-28
- Gavia Race 0 Tubeless 25mm
- Price: $11,300
- Carbon, red and orange
- Integrated seatmast
- Top-level carbon
- Carbon stem, carbon bar
- Full Shimano Ultegra hydraulic Di2 except KMC X11E-1 chain
- 52/36 and 11-28
- Gavia Race 0 Tubeless 25mm
- Price: $7,000
- Carbon, green and white
- Second-level carbon
- Adjustable seatpost
- Alloy stem, carbon bar
- Full Shimano Ultegra hydraulic Di2 except KMC X11E-1 chain
- 52/36 and 11-28
- Gavia Race 1 Tubeless 25mm
- Price: $5,700
- Neon red and black
- Second-level carbon
- Alloy/carbon fork
- Adjustable seatpost
- Alloy bar and stem
- Full Shimano Ultegra hydraulic mechanical except KMC X11E-1 chain
- Gavia Race 1 Tubeless 25mm
- Price: $3,700
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