Compare bikes: Compare Specialized Roll Roll Sport (2017) vs. Trek FX FX 1 (2017) - Findabike

KMC Z51, 7-speed

KMC Z51

Stout, forged alloy

Forged alloy, 48/38/28 w/chainguard

Front: Shimano Tourney, top swing, 31.8mm band clamp - Rear: Shimano Tourney, 7-speed

Front: Shimano Tourney TY51 - Rear: Shimano Altus M310

Shimano EF51, EZ Fire Plus, 7-speed

Shimano Altus EF500, 7-speed

Shimano Tourney freewheel, 7-speed, 14-34t

SunRace freewheel, 14-34, 7-speed

Roll Disc Steel, fender/rack mounts

High-tensile steel w/lowrider mounts, CLIX dropouts

Specialized A1 Premium Aluminum, Ground Control Positioning, formed tubes, disc mount, fender/rack mounts

FX Alpha Silver Aluminium, DuoTrap S compatible, rack and mudguard mounts

1-1/8" threadless, sealed semi-cartridge bearings

Forged alloy, 17-degree rise, 31.8mm clamp

Bontrager alloy, 25.4mm, 15 degree

Front: Specialized disc, double-sealed, loose ball bearings, 9mm QR - Rear: Specialized disc, loose ball bearings, QR

Front: Formula TK31 alloy - Rear: Formula FM31 alloy

Specialized Roll, double-wall, disc

Bontrager AT-750 double-walled alloy

Stainless, 14g

Front: Nimbus Sport, 650bx2.3", 60TPI, BlackBelt protection - Rear: Nimbus Sport, 650bx2.3", 60TPI, BlackBelt protection

Bontrager H2, 700x35c

Formula FM21 alloy front hub; Formula FM31 alloy rear hub; Bontrager AT-750 double-walled alloy rims

Front: Tektro, mechanical disc, resin pads, 160mm rotor - Rear: Tektro, mechanical disc, resin pads, 160mm rotor

Tektro alloy linear-pull

Specialized Roll, 6061 alloy, 15-degree backsweep, 5-degree upsweep, 125mm rise, 31.8mm

Bontrager Riser, 25.4mm, 30mm rise

Body Geometry The Cup, steel rails, 245mm

Bontrager Sport

Dual-Bolt Diecast Head, AL6061 Post, Spring Suspension

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

Forged alloy, 17-degree rise, 31.8mm clamp

Bontrager alloy, 25.4mm, 15 degree

Specialized City platform