Jamis Helix A2 vs Viathon R.1 105

Compare Specifications of Jamis Helix A2 and Viathon R.1 105

Selected Bikes

Jamis Helix A2
Jamis Helix A2

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Viathon R.1 105
Viathon R.1 105

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Technical Specifications
Frame 6061 aluminum main tubes, over-sized seat tube, zero-stack head tube, over-sized stays, replaceable derailleur hanger VIATHON R.1 ROAD FRAME FULL CARBON
Stem Jamis XC alloy threadless, 31.8 x 10˚ rise x 75mm (14”/16”), 90mm (18”) ZIPP SERVICE COURSE, 31.8 MM, 6°, 110 MM
Handle Bar Jamis XC alloy riser, 31.8 x 20mm rise x 720mm ZIPP SERVICE COURSE 70 ERGO
Fork SR Suntour XCE 28 DS 27.5”, coil spring, external preload adjustor, 28mm stanchions, aluminum lowers, 100mm travel VIATHON R.1 ROAD FORK FULL CARBON
Seatpost Jamis alloy micro-adjust, 31.6 x 350mm (14”) 400mm (16”/18”) ZIPP SERVICE COURSE, 27.2 MM, 350 MM
Grip Kraton --
Crankset Forged Alloy, 36/22T SHIMANO 105 FC-R7000 50-34T
Pedals MTB platform, hi-impact resin --
Chain KMC Z8.3, 8-speed SHIMANO CN-HG601-11
Shifters Shift levers : Shimano EF505, 2x8-speed SHIMANO 105 ST-R7020
Saddle Jamis ATB Sport Women’s FIZIK ANTARES R5
Headset Zero-stack internal cup, 8mm cone spacer --
Derailleur Front -- SHIMANO 105 FD-R7000
Derailleur Rear Shimano Tourney rear and Altus front SHIMANO 105 RD-R7000
Spoke 14G nickel-plated spokes --
Cassette Shimano HG31, 8-speed, 11-32T SHIMANO 105 CS-R7000 11-28T
Bottom Bracket Sealed cartridge ROTOR PRESS FIT 4624
Tyres
Front CST Patrol, 27.5 x 2.25” CONTINENTAL ULTRA SPORT II, 700 X 25
Rear CST Patrol, 27.5 x 2.25” CONTINENTAL ULTRA SPORT II, 700 X 25
Wheel / RIM Alex TD26 27.5” rims, 32H, alloy disc hubs MAVIC AKSIUM DISC CENTERLOCK
Brakes
Front Shimano MT200 hydraulic disc, Shimano RT26 160mm rotors SHIMANO SM-RT70 160 MM
Rear Shimano MT200 hydraulic disc, Shimano RT26 160mm rotors SHIMANO SM-RT70 160 MM
Brake Lever -- SHIMANO 105 ST-R7020
Suspension
Front -- --
Rear -- --
Colors Available
Colors Vanilla Mint
Charcoal
Copper
Silver


Physical Specs
Length -- --
Overview
Features -- - Shimano 105 components deliver affordable refinement
- Mavic Aksium wheels deliver speed and durability
- Internal cable routings reduce aerodynamic drag
- Zipp Service Course alloy bar and stem offer precision and strength
Additional Details Sizes : 14”, 16”, 18” Sizes : 52, 54, 56, 57.5, 59
Front Axle : 12MM X 100MM QUICK RELEASE THRU-AXLE
Rear Axle : 12MM X 142MM QUICK RELEASE THRU-AXLE
Inner Tubes : KENDA PRESTA
Bar Tape : FIZIK WHITE

Which one do you think is better? And why?
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