Author Ultrasonic 27.5 2021-22 vs Trek Precaliber 20 7-Speed

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• Author Ultrasonic 27.5 2021-22 vs Trek Precaliber 20 7-Speed

Compare Specifications of Author Ultrasonic 27.5 2021-22 and Trek Precaliber 20 7-Speed

Selected Bikes

Author Ultrasonic 27.5 2021-22 Brand: -- Select Brand -- Model: -- Select Model --

Trek Precaliber 20 7-Speed Brand: -- Select Brand -- / Model: -- Select Model --

Brand: -- Select Brand -- Model: -- Select Model --

Brand: -- Select Brand -- Model: -- Select Model --

Technical Specifications

Load Carrying Capacity	--	Combined weight of bicycle, rider, and cargo of 80 pounds (36 kg)
Speed	11	--
Frame	Triple butted hydroformed alloy 6061 27.5"	Alpha Silver Aluminum, 20'' kids' frame size
Stem	AUTHOR alloy	Bontrager Approved alloy, 25.4 mm clamp, 15 degree rise, 60 mm
Handle Bar	AUTHOR Flat Top bar 9° 620 / 640 mm	Kids' steel, 25.4 mm clamp, 40 mm rise, 560 mm width
Fork	Front : RST F1RST 27.5 air, lock out (80 mm)	Kids' suspension, threadless steerer, 35 mm travel
Seatpost	AUTHOR alloy (31.6)	--
Grip	AUTHOR kratton rubber	Kids' grip, 125 mm width
Crankset	--	ProWheel alloy, 32T steel ring w/double guard, 127 mm length
Pedals	Alloy	Kids' Satellite, 9/16 thread
Chain	KMC X11	KMC Z7, 7 speed
Shifters	SHIMANO SLX (11)	Shimano Tourney RS45, 7 speed twist
Saddle	AUTHOR Champion Author Navigator	Kids' padded, integrated seatpost, with handle
Headset	--	Adjustable ball bearing, threadless
Derailleur Rear	SHIMANO SLX	Shimano Tourney TY300, long cage, 34T max cog
Hub Front	AUTHOR Xenon 32 holes	Alloy, 8-speed, 130 mm bolt-on
Hub Rear	--	Alloy, 100 mm bolt-on
Spoke	Black stainless steel 2.0 mm	14g stainless steel
Cassette	--	SunRun freewheel, 14-28, 7 speed,
Bottom Bracket	PROWHEL BB unit	Square taper, 68 mm

Tyres

Front	CST B-Trail aramid 27.5" × 2.25"	Bontrager XR1, wire bead, 27 tpi., 20 x 2.25''
Rear	CST B-Trail aramid 27.5" × 2.25"	Bontrager XR1, wire bead, 27 tpi., 20 x 2.25''
Wheel / RIM	Rims :AUTHOR Xenon TRC 27.5 32 holes	Alloy 20'', 32-hole, schrader valve

Brakes

Front	TEKTRO Gemini disc hydraulic (6" rotors)	Alloy linear-pull
Rear	TEKTRO Gemini disc hydraulic (6" rotors)	Alloy linear-pull
Brake Lever	TEKTRO Gemini WS	Kids', alloy

Suspension

Front	--	--
Rear	--	--

Colors Available

Colors

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Crystal White Voodoo Trek Black

Physical Specs

Length	--	--
Weight	12 kg	10.90 kg

Overview

Features	--	--
Additional Details	SIZE :14", 16" HEAD PARTS: AUTHOR Integrated 1.5" tapered CHAIN WHEEL : PROWHEEL 32 teeth 165 / 170 mm cranks	--
Accessories	--	Kickstand

Which one do you think is better? And why?

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