Sun Biscayne Tandem CB vs Trek Madone SL 7 Disc

Frame	High Tensile Steel, TIG-Welded	500 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, adjustable top tube IsoSpeed, invisible cable routing, control center, micro-adjust seatmast, precision water bottle placement, 3S aero chain keeper, flat mount disc, Duo Trap S compatible, 142 x 12 mm thru axle
Stem	Alloy, 25.4 x 180mm Quill x 80mm Ext. x 25.4 Clamp, Black	Bontrager Pro, 31.8 mm, Blendr compatible, 7 degree
Handle Bar	Steel, 28.4" Wide x 7.3" Rise x 25.4 Clamp, Black	Bontrager Elite Aero VR-CF, alloy, 31.8 mm, invisible cable routing, 93 mm reach, 123 mm drop
Fork	--	Madone KVF full carbon, tapered carbon steerer, invisible cable routing, flat mount disc, carbon dropouts, 12 x 100 mm thru axle
Seatpost	--	Madone aero carbon seatmast cap, integrated light mount, 25 mm offset
Grip	Foam, Black	Bontrager Supertack Perf tape
Crankset	--	Shimano Ultegra R8000
Pedals	Slip Resistant Top, 9/16", Black	--
Chain	K.M.C. 1/2" x 1/8", Black (130 Links)	Shimano Ultegra HG701, 11-speed
Shifters	--	Shimano Ultegra Di2, R8070, 11-speed
Saddle	Comfort Cruiser, Elastomer Suspension, Black	Bontrager Aeolus Comp, steel rails, 145 mm width
Headset	Steel, 25.4 x 34 x 30mm, Black	--
Derailleur Front	--	Shimano Ultegra R8050 Di2, braze-on
Derailleur Rear	--	Shimano Ultegra R8050 Di2, short cage, 30 T max cog
Hub Front	Shimano CB-E110 Coaster Brake, 36H x 14G, Black	--
Hub Rear	Alloy, 36H x 14G x 3/8" Bolt-On Axle, Black	--
Spoke	14G Stainless Steel with Brass Nipples	--
Cassette	--	Shimano Ultegra R8000, 11-28, 11 speed
Chainrings	--	50 / 34 (compact)
Sprocket	19T x 1/2'' x 1/8''	--
Stand	Alloy, Center Mount, Black	--

Front	Beach Bum 26 x 2.125", Black Wall	Bontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700 x 25 c
Rear	Beach Bum 26 x 2.125", Black Wall	Bontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700 x 25 c
Wheel / RIM	Rims: 26" x 36H x 14G, Red	Bontrager Aeolus Pro 5 Disc, OCLV Carbon, Tubeless Ready, 19.5 mm rim width, 50 mm rim depth

Front	Alloy (Linear Pull) Black	--
Rear	Shimano CB-E110 Internal Coaster Brake, Black	--
Brake Lever	Alloy (Linear Pull) Black / Silver	--

Front	--	--
Rear	--	--

Colors

Metallic Red

Matte Black / Gloss Alpine Blue

Length	--	--
Weight	27.2 kg	--

Features	--	--
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	Axles Front : 100 x 12 mm Rear : 142 x 12 mm