Sun Biscayne Tandem CB vs Trek Domane AL 5 Disc

Load Carrying Capacity	--	Combined weight of bicycle, rider, and cargo of 275 pounds (125 kg)`
Frame	High Tensile Steel, TIG-Welded	100 Series Alpha Aluminum, tapered head tube, internal routing, fender mounts, DuoTrap S compatible, flat mount disc, 142 x 12 mm thru axle
Stem	Alloy, 25.4 x 180mm Quill x 80mm Ext. x 25.4 Clamp, Black	Size : 49 - Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree, 80 mm length Size : 52, 54 - Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree, 90 mm length Size : 56, 58 - Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree, 100 mm length Size : 61 - Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree, 110 mm length
Handle Bar	Steel, 28.4" Wide x 7.3" Rise x 25.4 Clamp, Black	Size : 49 - Bontrager Elite IsoZone VR-SF, alloy, 31.8 mm, internal Di2 routing, 75 mm reach, 128 mm drop, 38cm width Size : 52 - Bontrager Elite IsoZone VR-SF, alloy, 31.8 mm, internal Di2 routing, 75 mm reach, 128 mm drop, 40cm width Size : 54, 56 - Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, internal Di2 routing, 93 mm reach, 123 mm drop, 42cm width Size : 58, 61 - Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, internal Di2 routing, 93 mm reach, 123 mm drop, 44cm width
Fork	--	Domane AL carbon, tapered alloy steerer, internal brake routing, fender mounts, flat mount disc, 12 x 100 mm thru axle
Seatpost	--	Size : 49 - Bontrager Comp, 6061 alloy, 27.2 mm, 8 mm offset, 250 mm length Size : 52, 54, 56, 58, 61 - Bontrager Comp, 6061 alloy, 27.2 mm, 8 mm offset, 330 mm length
Grip	Foam, Black	--
Crankset	--	Size : 49, 52 - Shimano 105 R7000, 50/34 (compact), 170 mm length Size : 54, 56 - Shimano 105 R7000, 50/34 (compact), 172.5 mm length Size : 58, 61 - Shimano 105 R7000, 50/34 (compact), 175 mm length
Pedals	Slip Resistant Top, 9/16", Black	--
Chain	K.M.C. 1/2" x 1/8", Black (130 Links)	Shimano HG601
Shifters	--	Shimano 105 R7020, 11 speed
Saddle	Comfort Cruiser, Elastomer Suspension, Black	Size : 49, 52 - Bontrager P3 Verse Comp, steel rails, 155 mm width Size : 54, 56, 58, 61 - Bontrager P3 Verse Comp, steel rails, 145 mm width
Headset	Steel, 25.4 x 34 x 30mm, Black	FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom
Derailleur Front	--	Shimano 105 R7000, 31.8 mm clamp
Derailleur Rear	--	Shimano 105 R7000, long cage, 34T max cog
Hub Front	Shimano CB-E110 Coaster Brake, 36H x 14G, Black	Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142 x 12 mm thru axle
Hub Rear	Alloy, 36H x 14G x 3/8" Bolt-On Axle, Black	Bontrager alloy, sealed bearing, centerlock disc, 100 x 12 mm thru axle
Spoke	14G Stainless Steel with Brass Nipples	14g stainless steel
Cassette	--	Shimano 105 HG700-11, 11-34, 11 speed
Sprocket	19T x 1/2'' x 1/8''	--
Bottom Bracket	--	Shimano RS500, 68 mm, threaded external
Stand	Alloy, Center Mount, Black	--

Front	Beach Bum 26 x 2.125", Black Wall	Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700 x 32c
Rear	Beach Bum 26 x 2.125", Black Wall	Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700 x 32c
Wheel / RIM	Rims: 26" x 36H x 14G, Red	Bontrager Affinity Disc, Tubeless Ready, 28-hole, 21 mm width, presta valve

Front	Alloy (Linear Pull) Black	Shimano 105 hydraulic disc, flat mount Brake Rotor : Shimano SM-RT70, centerlock, 160 mm
Rear	Shimano CB-E110 Internal Coaster Brake, Black	Shimano 105 hydraulic disc, flat mount Brake Rotor : Shimano SM-RT70, centerlock, 160 mm
Brake Lever	Alloy (Linear Pull) Black / Silver	--

Front	--	--
Rear	--	--

Colors

Metallic Red

Lithium Grey/Trek Black Factory Orange/Lithium Grey

Length	--	--
Weight	27.2 kg	10.05 kg

Features	--	- Rack Mounts - Endurance Fit - Endurance Geometry - Fender Compatible - Additional Tire Clearance
Additional Details	Captain Crank Left: 3-Piece Alloy, 170mm x 42T x 1/2" x 1/8", Black (For Diamond Square Cranks) Captain Crank Right: 3-Piece Alloy, 170mm, Black (For Diamond Square Cranks) Freewheel: Shimano TZ-21 (7-Speed) 14-28T Captain Crank Right: 3-Piece Alloy, 170mm, Black (For Diamond Square Cranks) Stoker Crank Left: 3-Piece Alloy, 170mm x 42T x 1/2" x 1/8", Black (For Diamond Square Cranks) Stoker Crank Right: 3-Piece Alloy, 170mm x 42T x 1/2" x 3/32", Black (For Diamond Square Cranks) Chainwheel: Steel, Silver Painted W/Plastic Chain Cover Pulley Adjuster:Eccentric BB Insert Seat Clamp: Alloy, 28.6mm I.D., with Double Bolt, Black Stoker Seat Clamp: Alloy, 34.9mm I.D., Black Front Fender: Steel, W/Single Strut, Painted Rear Fender: Steel, W/Single Strut, Painted Fender Set: Plastic, F&R W/Rubber Bump Guards, Silver	--