Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices

Today’s Deals
Bike Comparison
    HORIZON 105/GRX2023 Opus
    Recommended
    MSRP
    ($1,606)
    Where to Buy
    —
    $1

    At

    Category
    		Gravel
    Weight
    		22.8 lbs
    4.2
    Frame
    		Aluminum
    		Carbon
    Wheels
    		Aluminum
    Wheel Size
    		700c
    Clearance
    		45c
    		Promax Hydraulic Disc
    		GRX 800, 105
    Drivetrain
    		2 × 11
    Brand Site

    opusbike.com

    Summary
    		The Opus HORIZON 105/GRX is an aluminum frame gravel bike with high-end components and promax hydraulic disc brakes.

    Ask 99 Spokes

    Want to ask an actual human?

    Get free advice from a Gear Advisor at Jenson USA

    Text a Gear Advisor
    Similar Bikes
    Insights
    Ride Feel

    Based on frame geometry and build specs.

    Rider Position
    relaxedaggressive
    Terrain
    smoothrugged
    HORIZON 105/GRX
    Other Gravel bikes
    Gear Range

    A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

    Lowest gear

    (climbing)

    38 mph

    HORIZON 105/GRX

    Highest gear

    (descending)

    Spec Level

    Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

    Geometry
    Specs
    HORIZON 105/GRX2023 Opus
    Frame

    Meta 30 Alloy

    BB Standard: BSA, 68mm, Threaded

    Tire Clearance: 45c

    Color: Dark Green

    Fork

    Full carbon tapered 1-1/2 to 1-1/8 in

    Bottom Bracket

    FSA sealed BSC threaded

    Headset

    FSA Orbit integrated sealed

    Stem

    Promax

    Handlebar

    X-Race Aero 16° flare

    Saddle

    Selle Italia X3 XP Keramid

    Seatpost

    Promax alloy 27.2 x 300

    Type: Rigid

    Pedals

    N/A

    Groupset
    Rear Derailleur

    Shimano GRX-810

    Crank

    FSA Omega Adventure

    Shifters

    Shimano 105 R7000 2 x 11

    Cassette

    Shimano 11-34

    Chain

    Shimano HG11

    Brakes

    Promax Decode R Flat Mount twin piston disc

    Type: Promax Hydraulic Disc

    Brake Levers

    Shimano 105 R7000

    Wheels
    Rims

    Weinmann U28TL

    Front Hub

    Alex Bear Pawls through axle 12 mm fr/rr

    Rear Hub

    Alex Bear Pawls through axle 12 mm fr/rr

    Tires

    Kenda Flintridge Pro 700 x 35 CSK

    Riders Also Compared