Bergamont Grandurance 4 vs Sun Biscayne Tandem CB

Compare Specifications of Bergamont Grandurance 4 and Sun Biscayne Tandem CB

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Bergamont Grandurance 4
Bergamont Grandurance 4

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Sun Biscayne Tandem CB
Sun Biscayne Tandem CB

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Technical Specifications
Frame 28", ultra lite AL-6061 tubing
Size : 49/53/55/57/61 cm
High Tensile Steel, TIG-Welded
Stem Syncros RR2.5, +/- 6° Alloy, 25.4 x 180mm Quill x 80mm Ext. x 25.4 Clamp, Black
Handle Bar Syncros Creston 2.0, flare: 10° Steel, 28.4" Wide x 7.3" Rise x 25.4 Clamp, Black
Fork Grandurance Alloy, quick release, fender mount --
Seats Syncros Tofino 2.5 --
Seatpost Syncros 2.5 --
Grip BGM Race Grip-Tape, antislip Foam, Black
Crankset Shimano Sora, FC-R3000, 50/34t --
Pedals -- Slip Resistant Top, 9/16", Black
Chain KMC X9 K.M.C. 1/2" x 1/8", Black (130 Links)
Shifters Shimano Sora, ST-R3000, 2x9-speed, road STI-shifter --
Saddle -- Comfort Cruiser, Elastomer Suspension, Black
Headset BGM F13-C, A-Headset, semi-integrated, tapered Steel, 25.4 x 34 x 30mm, Black
Derailleur Front Shimano Sora, FD-R3000 --
Derailleur Rear Shimano Sora, RD-R3000, long cage --
Hub Front BGM Pro, centerlock, disc, quick release Shimano CB-E110 Coaster Brake, 36H x 14G, Black
Hub Rear BGM Pro, centerlock, disc, quick release Alloy, 36H x 14G x 3/8" Bolt-On Axle, Black
Spoke Stainless, black 14G Stainless Steel with Brass Nipples
Cassette Shimano CS-HG201-9, 11-34t --
Sprocket -- 19T x 1/2'' x 1/8''
Stand -- Alloy, Center Mount, Black
Tyres
Front Schwalbe G-One Allround, Raceguard, 35-622
Tubes: Schwalbe SV17A Light
Beach Bum 26 x 2.125", Black Wall
Rear Schwalbe G-One Allround, Raceguard, 35-622
Tubes: Schwalbe SV17A Light
Beach Bum 26 x 2.125", Black Wall
Wheel / RIM Rims : Shining DB-T260, disc Rims: 26" x 36H x 14G, Red
Brakes
Front Shimano BR-R317, mechanical disc brake, SM-RT54 rotor: 160/160 mm Alloy (Linear Pull) Black
Rear Shimano BR-R317, mechanical disc brake, SM-RT54 rotor: 160/160 mm Shimano CB-E110 Internal Coaster Brake, Black
Brake Lever Shimano Sora, ST-R3000 Alloy (Linear Pull) Black / Silver
Suspension
Front -- --
Rear -- --
Colors Available
Colors Petrol/gold/silver (shiny/matt) Metallic Red


Physical Specs
Length -- --
Weight 11.1 kg 27.2 kg
Overview
Features - Solid Shimano Sora components
- 35 mm Schwalbe G-One all-round tires with low rolling resistance tread and strong grip
- Syncros Creston drop bar with 10° flare
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Additional Details BB-Set : Shimano Hollowtech II, BSA
Max weight : 115 kg
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

Which one do you think is better? And why?
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