Author Rival 27.5 2021-22 vs Felt Doctrine Advanced XT 2020

Compare Specifications of Author Rival 27.5 2021-22 and Felt Doctrine Advanced XT 2020

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Author Rival 27.5 2021-22
Author Rival 27.5 2021-22

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Felt Doctrine Advanced XT 2020
Felt Doctrine Advanced XT 2020

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Technical Specifications
Speed 24 --
Frame -- Felt XC, UHC Advanced carbon fiber, MMC with Inside Out construction, full carbon dropouts, Control Taper head tube, low-direct front derailleur mount, replaceable derailleur hanger, flat mount disc mounts, BSA Threaded bottom bracket, 12 x 148 mm Syntace style thru axle, internal derailleur cable routing
Stem AUTHOR alloy Devox, ±7¡ rise, ¯31.8 mm with Cr-Mo bolts, XS/SM: 60 mm, M/L: 70 mm, XL: 90 mm
Handle Bar AUTHOR 8° 660 / 680 mm Devox carbon flat top, ¯31.8 mm, 8 mm rise, 9¡ sweep, 720 mm wide
Fork -- FOX 32 Step-Cast Performance Elite, 120 mm travel, lockout remote, 15 x 110 mm Boost thru axle
Seatpost AUTHOR alloy (31.6) Devox carbon post, forged head, 15 mm offset, ¯27.2, XS/SM: 350 mm, MD/LG/XL: 400 mm
Grip AUTHOR kraton rubber Silicone Foam
Crankset -- Shimano XT, 32T, SM: 170 mm, MD/LG/XL: 175 mm
Pedals Resin --
Chain KMC Z8.3 Shimano XT M8100, 12-speed
Shifters SHIMANO TX800 (24) Shimano XT M8100, 1 x 12
Saddle AUTHOR Courier Prologo Kappa RS, T2.0 rails
Headset -- FSA integrated sealed cartridge ACB bearing, No. 42, 1.125" - 1.5"
Derailleur Front SHIMANO TY700 (34.9) Reynolds, Shimano Micro Spline, 12 x 148 mm Boost thru axle, Center Lock
Derailleur Rear SHIMANO TX800 Shimano XT M8100, 12-speed
Hub Front QUANDO Disc 32 holes --
Hub Rear QUANDO Disc 32 holes Reynolds, 15 x 110 mm Boost thru axle, Center Lock
Cassette -- Shimano XT M8100, 12-speed, 10-51T
Bottom Bracket VP COMP cartridge --
Tyres
Front AUTHOR Rocket 27,5" × 2.10" Schwalbe Racing Ray Evo front + Racing Ralph Evo rear, Snakeskin, folding, tubeless ready, 29 x 2.25"
Rear AUTHOR Rocket 27,5" × 2.10" Schwalbe Racing Ray Evo front + Racing Ralph Evo rear, Snakeskin, folding, tubeless ready, 29 x 2.25"
Wheel / RIM RIMS: AUTHOR Xenon 27.5 32 holes Custom Reynolds TR249 carbon wheelset, tubeless ready, 24 mm inner width
Brakes
Front TEKTRO disc mechanical (6" rotors) Shimano XT M8100 hydraulic disc, 180 mm rotor
Rear TEKTRO disc mechanical (6" rotors) Shimano XT M8100 hydraulic disc, 160 mm rotor
Brake Lever SHIMANO TX800 Shimano
Suspension
Front -- --
Rear -- --
Colors Available
Colors -- Aquafresh / Carbon (Black)
Satin Charcoal Frost / Carbon (Black)


Physical Specs
Length -- --
Weight 15 kg --
Overview
Features -- --
Additional Details SIZE :15", 17", 19"
HEAD PARTS: PRESTINE Integrated 1-1/8"
CHAIN WHEEL :PROWHEEL 42-34-24 teeth 170 / 175 mm cranks
FREE WHEEL: SHIMANO HG200-8 12-32 (8)
SEAT CLAMP: AUTHOR (34.9)
Chainguide : GW S3, low-direct mount

Bottom Bracket : Shimano, BSA threaded, 73 mm

Seatpost Clamp : Felt single bolt, ¯31.8 mm

Thru Axles : Rear: Felt leverless 12 x 148 x 166, thread: M12 x 1.0P x 18L, Syntace

Which one do you think is better? And why?
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