After riding a gravel setup for 4 years, I decided to “road optimize” my 2021 Topstone as ChatGPT would say. Super happy with out it turned out and how sneakily fast it is.
Frameset
Frame: 2021 Cannondale Topstone 4 (6061 alloy, endurance/gravel geometry, semi-internal routing)
Fork: Full carbon fork, 12×100 thru-axle
Headset/Compression: FSA system with Cannondale stock top cap
Cockpit
Handlebar: Zipp Service Course Ergo, 42 cm
Zipp Quickview Integrated Mount SL
Stem: Zipp Service Course SL, 100 mm, −6°
Saddle: Specialized Power Expert Mirror
Seatpost: Zipp Service SL C2 Seatpost (not pictured)
Drivetrain
Shifters: Shimano GRX 600/610 (1×11)
Rear Derailleur: Shimano GRX RD-RX812 (clutch, long cage, 1× specific)
Crankset: Shimano FC-GRX 600, 170 mm arms, 40T chainring
Chain: Shimano HG701 11-speed
Wheelset & Tires
Wheelset #1:
Wheels: Zipp 303 S Tubeless Disc (45 mm depth, ~1,530 g)
Tires: Continental GP 5000 S TR, 28 mm tubeless (~280 g each)
Rotors: Shimano RT-CL800 Ice Tech (160 mm, Centerlock)
Cassette: Shimano Ultegra R8000, 11–30T (road-optimized gearing)
Wheelset #2:
Wheels: DT Swiss 1600 CR Spline 23
Tires: Pirelli Cinturato Velo EVO, 32mm tubeless
Rotors: Cannondale Stock
Cassette: Shimano GRX CS-HG800 11speed
by cr703lp