Jamis Ventura A1 vs Viathon G.1 Force

Drivetrain	--	SRAM Force 1x11 drivetrain
Frame	Size Specific Design double-butted 6061 aluminum compact sloping top tube frame design with with redesigned rear triangle, SST tubing diameters and internal cable guides, 1 1.5 - 1 1/8” tapered head tube, butted seat tube for 27.2 seat post, flat mount disc brake mount, replaceable derailleur hanger and fender/rack eyelets	VIATHON G.1 GRAVEL FRAME
Stem	Ritchey 4-Axis, 3D forged 6061 alloy, 6˚ x 90mm (48/51), 100mm (54/56), 120mm (58/61)	ZIPP SERVICE COURSE SL B1, 31.8 MM, 6°, 110 MM
Handle Bar	Ritchey Logic, 6061 aluminum, 31.8 x 400mm (48/51) 420mm (54/56), 440mm (58/61)	ZIPP SERVICE COURSE SL-70
Fork	Jamis Performance ECO carbon composite with carbon steerer, 1.5” hollow formed crown, monocoque one-piece forming technology, carbon dropouts with stainless tabs, flat mount disc brake mount with internal cable routing, exposed fender eyelets	VIATHON G.1 GRAVEL FORK
Seatpost	Ritchey Road, 27.2 x 350mm with alloy clamp	ZIPP SERVICE COURSE SL B1, 20 MM OFFSET, 27.2 MM, 330 MM
Crankset	FSA Vero, 50/34T, 170mm (48/51), 172.5mm (54/56), 175mm (58/61)	SRAM FC FORCE 1, X-SYNC, 42T
Pedals	Touring platform style, full alloy with toe clips	--
Chain	KMC Z9	SRAM PC-1170 11-SPEED
Shifters	Shiftlevers : Shimano Sora ST-R3000 Dual Control STI, 18-speed	SRAM FORCE HRD CX1
Gear	--	46T 1x or 50/34T 2x gearing
Saddle	Selle Royal Asphalt with integrated clip system	SELLE ITALIA NOVUS BOOST MAG
Headset	FSA Integrated, threadless, 1.5 - 1 1/8”	--
Derailleur Front	Sora FD-R3000 with 31.8mm alloy clamp	--
Derailleur Rear	Shimano Sora RD-R3000	SRAM RD FORCE 1 LONG CAGE
Cassette	Shimano HG201 9-speed, 11-32T	SRAM XG-1175 FULL PIN 10-42
Bottom Bracket	FSA sealed cartridge, 68 x 110.5mm	SRAM BB GXP, 68 MM

Front	Vittoria Zaffiro, 700 x 28c	IRC BOKEN, 700 X 40, FOLDING
Rear	Vittoria Zaffiro, 700 x 28c	IRC BOKEN, 700 X 40, FOLDING
Wheel / RIM	Alex ATD 470 disc specific rims with TCS (Tubeless Compatible System), 32H, Joytec 6-bolt alloy hubs with QR and 14g stainless steel spokes	MERCURY G1C DISC, XD

Front	Tektro Lyra mechanical disc brake	SRAM 160 MM ROUNDED
Rear	Tektro Lyra mechanical disc brakes	SRAM 160 MM ROUNDED
Brake Lever	Shimano Sora ST-R3000 STI levers	SRAM FORCE HRD CX1

Front	--	--
Rear	--	--

Colors

Ink

Copper Silver

Length

--

--

Features	--	- Drop seat stays and flattened rear tubing mute road chatter - Internal cable routings resist dust and grime - Durable threaded bottom bracket adds serviceability - Nimble and wide Mercury G3C wheels for max tire contact - Zipp Service Course cockpit for steering control and comfort - Mounts for three water bottles
Additional Details	Tape : Jamis suede tape with gel Sizes : 48, 51, 54, 56, 58, 61cm	Sizes : 52, 54, 56, 58, 60 Front Axle : SHIMANO E-THRU AXLE 100X12MM Rear Axle : SHIMANO E-THRU AXLE 142X12MM Inner Tubes : KENDA 700C Bar Tape : FIZIK BLACK