Author Ultrasonic 27.5 2021-22 vs Jamis Dakota Race

Compare Specifications of Author Ultrasonic 27.5 2021-22 and Jamis Dakota Race

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Author Ultrasonic 27.5 2021-22
Author Ultrasonic 27.5 2021-22

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Jamis Dakota Race
Jamis Dakota Race

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Model:

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Technical Specifications
Speed 11 --
Frame Triple butted hydroformed alloy 6061 27.5" Mid Modulus Dyad Plus carbon fiber, 1.5 - 1 1/8” tapered head tube, PressFit30 BB shell, High Direct Mount (HDM) front derailleur with internal cable routing, post mount disc brakes & 12x142 drop-outs, stainless steel chain stay protector, replaceable derailleur hanger, Formula axle
Stem AUTHOR alloy Ritchey Trail, 70mm (15"), 80mm (17"), 90mm (19"), 100mm (21")
Handle Bar AUTHOR Flat Top bar 9° 620 / 640 mm Ritchey Trail 2X, 31.8 x 9˚ sweep x +/- 5mm rise x 720mm
Fork Front : RST F1RST 27.5 air, lock out (80 mm) Rock Shox Recon RL 29", Solo Air spring compression, lever actuated lockout, 15x110mm axle, tapered alloy steerer, external rebound adjust, 100mm travel
Seatpost AUTHOR alloy (31.6) Ritchey Trail Comp, 31.6 x 400mm
Grip AUTHOR kratton rubber Jamis Lock-On
Crankset -- SRAM NX, 32T, 170mm (15"), 175mm (17-21")
Pedals Alloy --
Chain KMC X11 KMC X11-1 EPT (Anti-Rust), 11-speed
Shifters SHIMANO SLX (11) Shift levers : SRAM NX, 1x11-speed
Saddle AUTHOR Champion Author Navigator WTB Volt Sport
Headset -- FSA Orbit 1.5 Zero-Stack internal bearing, 8mm cone spacer
Derailleur Rear SHIMANO SLX SRAM NX, 11-speed
Hub Front AUTHOR Xenon 32 holes --
Spoke Black stainless steel 2.0 mm --
Cassette -- SRAM 1130, 11-speed, 11-42T
Bottom Bracket PROWHEL BB unit Enduro® PressFit 30
Tyres
Front CST B-Trail aramid 27.5" × 2.25" Vittoria Peyote, 29 x 2.25”, folding
Rear CST B-Trail aramid 27.5" × 2.25" Vittoria Peyote, 29 x 2.25”, folding
Wheel / RIM Rims :AUTHOR Xenon TRC 27.5 32 holes WTB ST i23 TCS 29" tubeless rims, Formula sealed bearing 6-bolt hubs, stainless spokes & brass nipples
Brakes
Front TEKTRO Gemini disc hydraulic (6" rotors) Shimano M396 hydraulic disc, 180mm
Rear TEKTRO Gemini disc hydraulic (6" rotors) Shimano M396 hydraulic disc 160mm rear RT26 6-bolt rotors
Brake Lever TEKTRO Gemini WS --
Suspension
Front -- --
Rear -- --
Colors Available
Colors -- Carbon


Physical Specs
Length -- --
Weight 12 kg 10.8 kg
Overview
Features -- --
Additional Details SIZE :14", 16"
HEAD PARTS: AUTHOR Integrated 1.5" tapered
CHAIN WHEEL : PROWHEEL 32 teeth 165 / 170 mm cranks
Sizes : 15”, 17”, 19”, 21”

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