Jamis Allegro A3 vs Sun Biscayne Tandem 7

Drivetrain	--	K.M.C. 1/2" x 1/8", Black (152 Links)
Frame	Size Specific Design 6061 aluminum with fast back rear triangle, internal cable routing, hydro-formed top and down tube, taper gauge “S” bend stays, kickstand mount, replaceable derailleur hanger and fender/rack eyelets	High Tensile Steel, TIG-Welded
Stem	Jamis alloy hi-rise, quill type, 35˚ rise, 80mm extension, 150mm (15”), 180mm (17-23”)	Alloy, 25.4 x 180mm Quill x 80mm Ext. x 25.4 Clamp, Black Stoker Stem:Alloy, Adjustable Reach (4-Bolt Face) Black
Handle Bar	Jamis Riser bar, aluminum, 25.4 x 10˚ sweep x 40mm rise x 600mm (15-17”) 620mm (19-23”)	Steel, 28.4" Wide x 7.3" Rise x 25.4 Clamp, Black Stoker Handlebar: Steel, 27" Wide x 10.8" Rise x 25.4mm Clamp, Black
Fork	Hi-Ten tapered straight blade unicrown with bulge butted steerer, low-rider carry mounts and forged dropouts with 2 fender eyelets	1-1/8" High Tensile Steel, Curved Legs, Double Eyelets
Seatpost	Jamis alloy micro-adjust, 27.2 x 350mm, alloy clamp with QR seatpin	Alloy w/o Clamp, 25.6 x 350mm, Black
Grip	Anatomic double density kraton	Foam, Black
Crankset	Forged alloy, 48/38/28T, 170mm with chain guard	--
Pedals	Platform style, steel cage/resin body	Slip Resistant Top, 9/16", Black
Chain	KMC Z51	K.M.C. 1/2" x 3/32", Black (130 Links)
Shifters	Shift levers : Shimano EZ-Fire Plus ST-EF500 shifters, 21-speed	Shimano 7-Speed Revo Twist Shifter
Saddle	Jamis Touring with SL cover	Comfort Cruiser, Elastomer Suspension, Black
Headset	Internal cup, threaded, 1 1/8”	Steel, 25.4 x 34 x 30mm, Black
Derailleur Rear	Shimano RD-TY300 rear and Shimano FD-TY510 top swing front	Shimano RD-TX35 Tourney
Hub Front	--	Alloy, 36H x 14G with 3/8" Bolt-On Axle, Black (For Freewheel)
Hub Rear	--	Alloy, 36H x 14G x 3/8" Bolt-On Axle, Black
Spoke	14g stainless steel spokes	14G Stainless Steel with Brass Nipples
Cassette	Shimano CS-HG200, 7-speed 12-32T	--
Bottom Bracket	VP sealed cartridge, 68 x 122.5mm	BC1.37'' x 24TPI, Steel, Caged Bearings Spindle:Bolt Type, 119mm
Stand	--	Alloy, Center Mount, Black

Front	14g stainless steel spokes	Beach Bum 26 x 2.125", Black Wall
Rear	14g stainless steel spokes	Beach Bum 26 x 2.125", Black Wall
Wheel / RIM	Double wall alloy rims, 32H, alloy hubs with QR	Rims:26" x 36H x 14G, Red Front: 26" x 1.75 x 36H x 14G Alloy-Cruiser, Bolt-On Rear: 26" x 1.75 x 36H x 14G Alloy-Cruiser, (FOR FREEWHEEL)

Front	Promax TX-121 linear-pull with front power modulator and Shimano levers	Alloy (Linear Pull) Black
Rear	Promax TX-121 linear-pull with front power modulator and Shimano levers	Alloy (Linear Pull) Black
Brake Lever	--	Alloy (Linear Pull) Black / Silver

Front	--	--
Rear	--	--

Colors

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Length	--	--
Weight	--	27.2 kg

Features	--	--
Additional Details	Sizes : 15”, 17”, 19”, 21”, 23”	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