Giant Defy Advanced Pro 0 vs Surly ECR

Frame	Advanced-grade composite, disc	Surly ECR, 100% Surly 4130 CroMoly steel. ED coated. Double-butted main triangle. TIG-welded
Stem	Giant Contact SL Aero Light XS:80mm, S:90mm, M:100mm, M/L:100mm, L:110mm, XL:110mm	ProMax 4 bolt, 31.8
Handle Bar	Giant Contact SLR D-Fuse XS:40cm, S:40cm, M:42cm, M/L:42cm, L:44cm, XL:44cm	Surly Moloko
Fork	Advanced SL-grade composite, full-composite OverDrive Aero steerer, disc	Surly ECR, TIG-welded custom-butted 4130 CroMoly, non-suspension corrected, 1-1/8˝ steerer tube, 203mm disc brake clearance
Seatpost	Giant D-Fuse SLR, composite, -5/+15mm offset	SeatpostPromax 27.2, 350L, Offset Clamp: Surly Stainless, 30.0mm (Surly stainless included)
Grip	Stratus Lite 3.0	Velo Lock-On
Crankset	Shimano Ultegra, 34/50 with Giant Power Pro power meter XS:170mm, S:170mm, M:172.5mm, M/L:172.5mm, L:175mm, XL:175mm	SRAM NX Eagle 30T
Chain	Shimano Ultegra	SRAM NX Eagle
Shifters	Shimano Ultegra Di2 ST-R8170	SRAM NX Eagle
Saddle	Giant Fleet SL	WTB Volt Sport
Headset	--	Cane Creek, 40 series, 1-1/8"
Derailleur Front	Shimano Ultegra Di2 FD-R8150	--
Derailleur Rear	Shimano Ultegra Di2 RD-R8150	SRAM NX Eagle
Hub Front	Giant Low Friction Hub, CenterLock, 12mm thru-axle	OE 32h QR
Hub Rear	Giant Low Friction Hub, 30t ratchet driver, CenterLock, 12mm thru-axle	OE 32h Thru axle
Spoke	Sapim stainless	--
Cassette	Shimano Ultegra, 12-speed, 11x34	--
Bottom Bracket	Shimano, press fit	SRAM Powerspline 118/73

Front	Giant Gavia Fondo 0, tubeless, 700x32c (33.5mm), folding	Surly Knard 27.5x3.0", 60TPI Tubeless Ready
Rear	Giant Gavia Fondo 0, tubeless, 700x32c (33.5mm), folding	Surly Knard 27.5x3.0", 60TPI Tubeless Ready
Wheel / RIM	Giant SLR 1 36 Carbon Disc WheelSystem	Rims: WTB Scraper i40 TSC

Front	Shimano Ultegra Di2 hydraulic, Shimano RT-MT800 160mm rotors	Avid BB7, Centerline rotors. 180/160mm
Rear	Shimano Ultegra Di2 hydraulic, Shimano RT-MT800 160mm rotors	Avid BB7, Centerline rotors. 180/160mm
Brake Lever	Shimano Ultegra Di2	Avid FR-5

Front	--	--
Rear	--	--

Colors

Carbon/BlueDragonfly

Tank Green Blacktacular

Length

--

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Features	--	- Two wheel platforms available: 27.5+ for frame sizes XS–M and 29+ for M–XL - Dedicated Rohloff cable routing and mount for OEM 2 axle plate. - Dedicated Surly Trailer mounts. - Gnot-Boost rear spacing with Rohloff torque arm slot and Bill/Ted trailer mount. - Rack and fender, multiple three-pack mounts and mid-blade.
Additional Details	--	Cog or cogset: SRAM Eagle 11-50T, 12 speed
Accessories	- Computer mount - Fender mount - Water bottle cages	--