Jamis Dakota Pro vs Sun Biscayne Tandem CB

Frame	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, Rock Shox Maxle axle	High Tensile Steel, TIG-Welded
Stem	Ritchey Trail, 70mm (15"), 80mm (17"), 90mm (19"), 100mm (21")	Alloy, 25.4 x 180mm Quill x 80mm Ext. x 25.4 Clamp, Black
Handle Bar	Ritchey Trail 2X, 31.8 x 9˚ sweep x +/- 5mm rise x 720mm	Steel, 28.4" Wide x 7.3" Rise x 25.4 Clamp, Black
Fork	Fox 32 Float Step Cast Performance Series 29" w/3-position compression & lock-out,15x110mm axle, air spring compression, rebound adjust, tapered alloy steerer, 100mm travel	--
Seatpost	Ritchey Trail Comp, 31.6 x 400mm	--
Grip	Jamis Lock-On	Foam, Black
Crankset	Shimano SLX, 32T, 170mm (15"), 175mm (17-21")	--
Pedals	--	Slip Resistant Top, 9/16", Black
Chain	KMC X11-1, 11-speed	K.M.C. 1/2" x 1/8", Black (130 Links)
Shifters	Shift levers : Shimano SLX, 1x11-speed	--
Saddle	WTB Volt Comp	Comfort Cruiser, Elastomer Suspension, Black
Headset	FSA Orbit 1.5 Zero-Stack internal bearing, 8mm cone spacer	Steel, 25.4 x 34 x 30mm, Black
Derailleur Rear	Shimano SLX Shadow Plus, 11-speed	--
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 M7000, 11-speed, 11-46T	--
Sprocket	--	19T x 1/2'' x 1/8''
Bottom Bracket	Shimano External	--
Stand	--	Alloy, Center Mount, Black

Front	Vittoria Peyote, 29 x 2.25”, folding	Beach Bum 26 x 2.125", Black Wall
Rear	Vittoria Peyote, 29 x 2.25”, folding	Beach Bum 26 x 2.125", Black Wall
Wheel / RIM	DT Swiss M1900 Spline 29" tubeless wheels,15x110mm front, 12x142mm rear	Rims: 26" x 36H x 14G, Red

Front	Shimano SLX hydraulic disc,180mm	Alloy (Linear Pull) Black
Rear	Shimano SLX hydraulic disc 160mm rear RT70 centerlock rotors	Shimano CB-E110 Internal Coaster Brake, Black
Brake Lever	--	Alloy (Linear Pull) Black / Silver

Front	--	--
Rear	--	--

Colors

Carbon

Metallic Red

Length	--	--
Weight	9.9 kg	27.2 kg

Features	--	--
Additional Details	Sizes : 15”, 17”, 19”, 21”	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