Brompton A Line vs Felt Broam 30

Drivetrain	Brompton 3 speed drivetrain, 177% range	--
Riding Modes	3 Speed (Utility)	--
Frame	Main Frame: Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints Rear Frame: Hand brazed cold-formed micro-alloy steel tubing	Felt Adventure Road Disc Superlite custom butted aluminum, smooth welded construction, 68 mm BSA threaded bottom bracket shell, 12 x 142 mm with Syntace style thru axle, flat mount disc brake standard, replaceable rear derailleur hanger, internal mechanical cable routing
Stem	--	Devox VariableAngle, ±8 degree/±16 degree rise, ¯31.8 mm, 47 cm: 80 mm, 51 cm: 90 mm, 54 - 56 cm: 100 mm, 58 cm: 110 mm, 61 cm: 120 mm
Handle Bar	Mid handlebar	Devox adventure bend, 86 mm reach, 130 mm drop, 8¡ flare, ¯31.8 mm, 47 cm: 400 mm, 51 cm: 420 mm, 54 cm: 440 mm, 56 - 61 cm: 460 mm
Fork	Steel Brazed Fork	Felt Adventure Gravel UHC Advanced carbon fiber monocoque construction, Control Taper 1.125" - 1.5" aluminum steerer tube, flat mount disc standard, 12 x 100 mm thru axle with mid-mount rack and fender mounts
Seatpost	Extended, Silver (35")	Devox Lite Road, ¯27.2 mm x 330 mm length
Grip	Push-on Rubber Grips	--
Crankset	--	Shimano GRX600 11 speed, 46/30T, 47-51 cm: 170 mm, 54 - 56 cm: 172.5 mm, 58 - 61 cm: 175 mm
Pedals	Non-folding Composite Pedals	--
Chain	6061 forged aluminium crank with 44T chainring and integrated chainguard	Shimano 11-speed
Shifters	Brompton 3 Speed Shifter	Shimano GRX600 11-speed
Saddle	A Line saddle with black rails 147mm width Composite seat clamp and rear frame clip in matt black finish	SR Essenza Blackstar Gel
Headset	Brompton Headset	FSA integrated sealed cartridge bearing with Felt Variable Height Cone Spacers (20 mm PC, 4.5 mm aluminum), Felt top cap and aluminum bolt, No.42, 1.125 - 1.5"
Derailleur Front	--	Shimano GRX810 braze-on, with ¯31.8 mm clamp adapter
Derailleur Rear	Brompton Chain Pusher	Shimano GRX812, 11-speed long cage
Hub Front	--	Devox GR.1 Disc, 11-speed, 12 x 142 mm thru axle, Center Lock, 28H
Hub Rear	--	Devox GR.2 Disc, sealed cartridge bearing, 12 x 100 mm thru axle, Center Lock, 28H
Spoke	--	2.0 mm stainless steel
Cassette	--	Shimano 11-speed, 11-34T
Sprocket	13 Tooth	--
Bottom Bracket	Square taper bottom bracket	--

Front	Schwalbe Marathon Racer	Maxxis Refuse with Max Shield, tubeless ready, folding, 700 x 40c
Rear	Schwalbe Marathon Racer	Maxxis Refuse with Max Shield, tubeless ready, folding, 700 x 40c
Wheel / RIM	Rear Wheel: Double-wall rim, 28 spoke, Brompton Standard ratio 3 speed internal gear hub, 13 tooth sprocket Front Wheel: Double wall rims, 28 spokes laced to a Brompton front hub	Devox Adventure 2.1 Disc, tubeless compatible 21 mm inner width, 23 mm depth
Tube	Schrader Valve	--

Front	Brompton A Line calipers	Shimano BR-RX400 hydraulic disc, 160 mm rotor
Rear	Brompton A Line calipers	Shimano BR-RX400 hydraulic disc, 140 mm rotor
Brake Lever	--	Shimano GRX600, hydraulic

Front	--	--
Rear	--	--

Colors

White

Midnight Blue Fade (Black) Sage Mist (Black)

Length	--	--
Weight	11.5 kg	--

About	The Brompton A Line is a practical bicycle designed with a focus on utility. Its technical spec Read More	--
Features	- 3 Easy to use hub gears - Folds in 20 seconds	- Dual-wheel compatibility (650b and 700c) - Massive tire clearance for all road and trail surface types - Sleek storage solutions, and rack- and fender-ready
Additional Details	Folded Size: 25.3' H' x 23'' W x 10.6'' D Hinge Clamps: Composite hinge clamp levers	Bar Tape : Felt Velvet Gel tape with 3M reflective base with reflective Felt Bubble-Tech F-Wing bar end plugs Bottom Bracket : Shimano Hollowtech BSA threaded Seatpost Clamp : Felt single bolt, 31.8 mm diameter Thru Axles : Front: 12 x 100 x 125, thread: M12 x 1.5P x 17L, Maxle; Rear: 12 x 142 x 163 (163L + 9 head = 172 total), thread: M12 x 1.0P x 19L, Syntace