Compare bikes: Compare Btwin Elops 920 City Bike - Dark Grey (2017) vs. Trek DS Series DS 1 (2017) - Findabike

KMC Z51

Forged alloy, 48/38/28 w/chainguard

Front: Shimano Tourney TY51 - Rear: Shimano Altus M310

Shimano Altus EF500, 7-speed

SunRace freewheel, 14-34, 7-speed

High strength aluminium frame. Unisex city geometry: The frame's geometry is specially designed for riding around town in an upright riding position. Lowered frame for easy mounting/dismounting. Lifetime warranty on the frame. Sizes available: S/M (1.55 m - 1.75 m, 28" wheels), L/XL (1.75 m - 1.95 m, 28" wheels).

Alpha Gold Aluminium, DuoTrap S compatible, rack and mudguard mounts

1-1/8" threadless, sealed cartridge bearings

Front: SR Suntour NEX, coil spring, preload, 63mm travel

Bontrager alloy, 25.4mm, 25 degree

Front: Formula DC20 alloy - Rear: Formula DC31 alloy

Bontrager AT-750 32-hole double-walled alloy

Reinforced, puncture-resistant city tyres (reinforced treads) with reflective strips on the sidewalls. Reflective sidewalls increase visibility and improve safety at night. Inner tubes are equipped with car valves, so tyres can be inflated at a service station. Tyres require a consistent pressure of between 3.5 and 4.5 bars (depending on the weight of the user) to prevent punctures.

Bontrager LT2, 700x38c

Double-wall aluminium rims guarantee superior long-term durability. The double-wall rims offer greater impact resistance if the tyre is under-inflated. Braking surfaces have been enhanced to improve braking. Bolt-on front and rear hub to deter theft of wheels.

Formula DC20 alloy front hub; Formula DC31 alloy rear hub; Bontrager AT-750 32-hole double-walled alloy rims

V-brakes with easily replaceable brake pads. Aluminium levers can be adjusted to fit riders with smaller hands.

Tektro M280 mechanical disc

Raised, pulled back handlebar, ergonomic grips, height- and depth-adjustable stem. The raised handlebar helps you maintain an upright and ergonomic position.

Bontrager Riser, 25.4mm, 30mm rise

Wide gel saddle provides maximum comfort and aluminium seat post. The seat's position is specially designed for easy handling of the bike.

Bontrager Sport

Bontrager SSR, 2-bolt head, 27.2mm, 12mm offset

Bontrager alloy, 25.4mm, 25 degree