Trek Madone SLR 9 Gen 7 vs Trek Sun Shimmer 1 16

Load Carrying Capacity	125 kg (275 lb)	Combined weight of bicycle, rider, and cargo of 80 pounds (36 kg)
Battery	Shimano BT-DN300	--
Charger	Charging cable included	--
Frame	800 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, IsoFlow seat tube, invisible cable routing, 3S aero chain keeper, T47 BB, flat mount disc, 142x12 mm thru axle	Classic steel with patented Flat Foot Technology fits kids from 96–116 cm
Stem	--	Alloy
Handle Bar	Size: 47 Madone Integrated handlebar/stem, OCLV Carbon, 80 mm reach, 124 mm drop, 35 cm control width, 38 cm drop width, 80 mm stem length Size: 50, 52 Madone Integrated handlebar/stem, OCLV Carbon, 80 mm reach, 124 mm drop, 37 cm control width, 40 cm drop width, 90 mm stem length Size: 54 Madone Integrated handlebar/stem, OCLV Carbon, 80 mm reach, 124 mm drop, 39 cm control width, 42 cm drop width, 90 mm stem length Size: 56, 58 Madone Integrated handlebar/stem, OCLV Carbon, 80 mm reach,	Electra kids cruiser bar
Fork	Madone KVF full carbon, tapered carbon steerer, internal brake routing, flat mount disc, carbon dropouts, 12x100mm thru axle	Steel unicrown
Seatpost	Size: 47, 50, 52, 54 Madone aero carbon seat post, 0 mm offset, short length Size: 56, 58, 60, 62 Madone aero carbon seat post, 0 mm offset, long length	Classic alloy pillar
Grip	Bontrager Supertack Perf tape	Custom
Crankset	Size: 47 Shimano Dura-Ace R9200, 52/36, 165 mm length Size: 50, 52 Shimano Dura-Ace R9200, 52/36, 170 mm length Size: 54, 56, 58 Shimano Dura-Ace R9200, 52/36, 172.5 mm length Size: 60, 62 Shimano Dura-Ace R9200, 52/36, 175 mm length	Classic steel one piece
Pedals	--	Resin
Chain	Shimano Dura-Ace/XTR M9100, 12-speed	KMC S1
Shifters	Shimano Dura-Ace R9270 Di2, 12 speed	--
Saddle	Size: 47, 50, 52 Aeolus RSL, carbon rails, 155 mm width Size: 54, 56, 58, 60, 62 Aeolus RSL, carbon rails, 145 mm width	Electra kids comfort with matching design with elastomer springs
Headset	--	1" steel threaded
Derailleur Front	Shimano Dura-Ace R9250 Di2, braze-on, down swing	--
Derailleur Rear	Shimano Dura-Ace R9250 Di2, 34T max cog	--
Hub Front	--	Coaster 28h
Hub Rear	--	Alloy 28h
Cassette	Shimano Dura-Ace R9200, 11-30, 12-speed	16t
Chainrings	1x: 50T, 2x: 54/40	--
Bottom Bracket	Praxis, T47 threaded, internal bearing	9-PC loose ball

Front	Bontrager R4 320, 700x25 mm	16" x 2.15" with puncture-resistant Kevlar guard casing, 67TPI
Rear	Bontrager R4 320, 700x25 mm	16" x 2.15" with puncture-resistant Kevlar guard casing, 67TPI
Wheel / RIM	F: Bontrager Aeolus RSL 51, OCLV Carbon, Tubeless Ready, 51 mm rim depth, 100x12 mm thru axle R: Bontrager Aeolus RSL 51, OCLV Carbon, Tubeless Ready, 51 mm rim depth, Shimano 11/12 freehub, 142x12 mm thru axle	Painted alloy with machined sidewalls

Front	Shimano Dura-Ace hydraulic disc Rotors Shimano MT900, CentreLock, 160 mm (Size: 47, 50, 52, 54, 56, 58, 60, 62) Shimano CL900, CentreLock, 160 mm (Size: 47, 50, 52, 54, 56, 58, 60, 62)	Alloy caliper
Rear	Shimano Dura-Ace hydraulic disc Rotors Shimano MT900, CentreLock, 160 mm (Size: 47, 50, 52, 54, 56, 58, 60, 62) Shimano CL900, CentreLock, 160 mm (Size: 47, 50, 52, 54, 56, 58, 60, 62)	Coaster brake

Front	--	--
Rear	--	--

Colors

Deep Smoke Azure Satin Quicksilver Axinite Flip/Trek Black Viper Red Metallic Red Smoke to Red Carbon Smoke

Cloud White

Length	--	--
Weight	7.1 kg	11.79 kg

Features	--	- Flat Foot Technology
Additional Details	--	Painted fenders Training wheels Stainless steel and anti-rust hardware