Jamis Boss Coaster vs Sun Brickell Tandem 7

Drivetrain	--	K.M.C. 1/2" x 1/8", Silver (152 Links)
Frame	Diamond frame design with 6061 aluminum oversized tubing, sloping top tube design, water bottle bosses, alloy kickstand, and painted steel chainguard	6061 Series Aluminum, TIG-Welded
Stem	Alloy hi-rise, 180mm quill, 100mm extension, with removeable 2-bolt cap	Alloy W/Micro Adj. Angle, 25.4 x 180mm Quill x 90mm Ext., Black Stoker Stem: Alloy, Adjustable Reach (4-Bolt Face) Black
Handle Bar	Jamis Cruise-control comfort bar	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	Oversized hi-tensile steel tubular unicrown with leading dropout and fender boss	1-1/8'' High Tensile Steel, Curved Legs, Double Eyelets
Seatpost	Alloy micro-adjust, 27.2 x 300mm, with 31.8mm alloy clamp and cromo seatpin	Alloy W/Integrated Clamp, 28.6 x 350mm, Black
Grip	Comfort style	Kraton Rubber-Gel, 130mm, 2-Tone Black & Grey
Crankset	Forged alloy crank, 170mm alloy, with 44T compact disc chainring	--
Pedals	Cruiser platform with TPE comfort insert	Slip Resistant Top, 9/16", Black
Chain	KMC Z410NP, silver	K.M.C. 1/2" x 3/32", Silver (130 Links)
Shifters	--	Rear Shifter: Shimano Tourney 7-Speed Twist Shifter
Saddle	Boss Cruiser design with extra padding and heavy-duty, double-loop springs	Comfort Cruiser, Elastomer Suspension, Black
Headset	Internal cup, threaded, 1 1/8”	Semi Integrated, Steel, 25.4 x 44 x 30mm, Black
Derailleur Rear	--	Shimano RD-TX35 Tourney
Hub Front	--	Alloy, 36H x 12G x 3/8" Bolt-On Axle, Black
Hub Rear	--	Alloy, 36H x 12G x 3/8" Bolt-On Axle, Black
Spoke	14 gauge stainless steel spokes	12G Stainless Steel with Brass Nipples
Cassette	18T	--
Bottom Bracket	Sealed cartridge, 68 x 122.5mm	BC1.37'' x 24TPI, Steel, Caged Bearings Spindle: Square Taper (JIS), Bolt Type, 68 x 110mm
Stand	--	Alloy, Center Mount, Black

Front	CST Metropolitan Palm Bay, 26" x 2.35	Kenda Komfort 26 x 1.95", Black Wall,26" x 1.90-2.35'', Schrader Valve
Rear	CST Metropolitan Palm Bay, 26" x 2.35	Kenda Komfort 26 x 1.95", Black Wall,26" x 1.90-2.35'', Schrader Valve
Wheel / RIM	Alex Zuma 36H black anodized alloy rims with alloy nutted front hub and Hi-Stop CB rear	Rims: 26" x 36H x 12G, Alloy, Black Front: 26" x 1.75 x 36H x 12G Alloy-Cruiser, Bolt-On Rear: 26" x 1.75 x 36H x 12G Alloy-Cruiser (For Freewheel)

Front	Hi-Stop coaster brake	Alloy (Linear Pull) Black
Rear	Hi-Stop coaster brake	Alloy (Linear Pull) Black
Brake Lever	--	Alloy (Linear Pull) Black / Silver

Front	--	--
Rear	--	--

Colors

Cosmo Blue Silver Mist Gloss Black

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Length	--	--
Weight	13.8 kg	22.6 kg

Features	--	--
Additional Details	Sizes : M: 17”, 19”, 21”, 23” S/O: 14”, 18”	Captain Crank Left: 3-Piece Alloy, 170mm x 42T x 1/2" x 1/8", 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, Black (4-Bolt x 104mm BCD) W/Plastic Chain Cover Pulley Adjuster:Eccentric BB Insert Seat Clamp: Alloy, 34.9mm I.D., with Double Bolt, Black Stoker Seat Clamp: Alloy, 34.9mm I.D., Black Front Fender: Plastic W/Rubber Bump Guards, Silver Rear Fender: Plastic W/Rubber Bump Guards, Silver Fender Set: Plastic, F&R W/Rubber Bump Guards, Silver