Felt Doctrine 1 2019 vs Sun Biscayne Tandem CB

Frame	Felt XC, UHC Advanced carbon fiber, MMC with Inside Out construction, full carbon dropouts, Control Taper head tube, Kevlar chain watcher, replaceable derailleur hanger, flat mount disc mounts, BB92, 12 x 148 mm Syntace style thru axle, internal derailleur cable routing	High Tensile Steel, TIG-Welded
Stem	Devox, ±7° rise, Ø31.8 mm with Cr-Mo bolts, XS/SM: 60 mm, M/L: 70 mm, XL: 90 mm	Alloy, 25.4 x 180mm Quill x 80mm Ext. x 25.4 Clamp, Black
Handle Bar	Devox carbon flat top, Ø31.8 mm, 8 mm rise, 9° sweep, 720 mm wide	Steel, 28.4" Wide x 7.3" Rise x 25.4 Clamp, Black
Fork	RockShox Sid RL Debonair with Charger 2, 100 mm travel, OneLoc remote, 15 x 110 mm Boost thru axle	--
Seatpost	Devox carbon post, forged head, 15 mm offset, Ø27.2, XS/SM: 350 mm, MD/LG/XL: 400 mm	--
Grip	Silicone Foam	Foam, Black
Crankset	SRAM X01 Eagle, 34T, XS/SM: 170 mm, MD/LG/XL: 175 mm	--
Pedals	--	Slip Resistant Top, 9/16", Black
Chain	SRAM X01, 12-speed	K.M.C. 1/2" x 1/8", Black (130 Links)
Shifters	SRAM X01, 1 x 12	--
Saddle	Prologo Kappa RS, T2.0 rails	Comfort Cruiser, Elastomer Suspension, Black
Headset	FSA integrated sealed cartridge bearing, No.42ACB-A, 1.125" - 1.5"	Steel, 25.4 x 34 x 30mm, Black
Derailleur Rear	SRAM X01 Eagle, 12-speed	--
Hub Front	DT, XD driver, 12 x 148 mm Boost thru axle, 6-bolt	Shimano CB-E110 Coaster Brake, 36H x 14G, Black
Hub Rear	DT, 15 x 110 mm Boost thru axle, 6-bolt	Alloy, 36H x 14G x 3/8" Bolt-On Axle, Black
Spoke	--	14G Stainless Steel with Brass Nipples
Cassette	SRAM XG1295, 12-speed, 10-50T	--
Sprocket	--	19T x 1/2'' x 1/8''
Stand	--	Alloy, Center Mount, Black

Front	Maxxis Ikon, folding, EXO/TR, tubeless ready, 29 x 2.2"	Beach Bum 26 x 2.125", Black Wall
Rear	Maxxis Ikon, folding, EXO/TR, tubeless ready, 29 x 2.2"	Beach Bum 26 x 2.125", Black Wall
Wheel / RIM	DT Swiss M1900 wheelset, tubeless ready, 25 mm inner width	Rims: 26" x 36H x 14G, Red

Front	SRAM Level TLM hydraulic disc, 180 mm rotor	Alloy (Linear Pull) Black
Rear	SRAM Level TLM hydraulic disc, 160 mm rotor	Shimano CB-E110 Internal Coaster Brake, Black
Brake Lever	SRAM Level TLM	Alloy (Linear Pull) Black / Silver

Front	--	--
Rear	--	--

Colors

Matte Carbon (Blue, Grey)

Metallic Red

Length	--	--
Weight	9.91 kg	27.2 kg

Features	--	--
Additional Details	Chainguide : One Up S3, Low direct top guide Bottom Bracket : SRAM GXP BB92 Seatpost Clamp : Felt single bolt, Ø31.8 mm Thru Axles : Rear: Felt leverless 12 x 148 x 166L Syntace style, thread: M12 x 1.0	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